/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:25:02,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:25:02,365 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:25:02,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:25:02,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:25:02,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:25:02,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:25:02,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:25:02,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:25:02,383 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:25:02,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:25:02,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:25:02,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:25:02,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:25:02,384 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:25:02,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:25:02,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:25:02,385 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:25:02,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:25:02,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:25:02,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:25:02,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:25:02,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:25:02,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:25:02,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:25:02,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:25:02,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:25:02,387 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:25:02,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:25:02,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:25:02,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:25:02,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:25:02,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:25:02,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:25:02,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:25:02,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:25:02,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:25:02,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:25:02,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:25:02,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:25:02,390 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:25:02,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:25:02,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:25:02,392 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:25:02,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:25:02,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:25:02,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:25:02,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:25:02,601 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:25:02,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2023-12-21 11:25:03,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:25:03,945 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:25:03,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2023-12-21 11:25:03,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd429200/fb3d6f29f076471c900030efa520bc99/FLAGdf0c4fa91 [2023-12-21 11:25:03,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd429200/fb3d6f29f076471c900030efa520bc99 [2023-12-21 11:25:03,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:25:03,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:25:03,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:25:03,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:25:03,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:25:03,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:25:03" (1/1) ... [2023-12-21 11:25:03,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f3cd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:03, skipping insertion in model container [2023-12-21 11:25:03,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:25:03" (1/1) ... [2023-12-21 11:25:04,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:25:04,224 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c[11348,11361] [2023-12-21 11:25:04,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:25:04,237 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:25:04,269 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c[11348,11361] [2023-12-21 11:25:04,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:25:04,280 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:25:04,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04 WrapperNode [2023-12-21 11:25:04,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:25:04,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:25:04,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:25:04,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:25:04,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,323 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 431 [2023-12-21 11:25:04,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:25:04,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:25:04,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:25:04,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:25:04,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,347 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 11:25:04,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:25:04,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:25:04,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:25:04,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:25:04,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (1/1) ... [2023-12-21 11:25:04,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:25:04,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:04,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 11:25:04,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 11:25:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:25:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:25:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:25:04,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:25:04,531 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:25:04,533 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:25:04,864 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:25:04,890 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:25:04,890 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:25:04,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:25:04 BoogieIcfgContainer [2023-12-21 11:25:04,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:25:04,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:25:04,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:25:04,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:25:04,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:25:03" (1/3) ... [2023-12-21 11:25:04,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d68e0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:25:04, skipping insertion in model container [2023-12-21 11:25:04,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:04" (2/3) ... [2023-12-21 11:25:04,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d68e0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:25:04, skipping insertion in model container [2023-12-21 11:25:04,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:25:04" (3/3) ... [2023-12-21 11:25:04,896 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2023-12-21 11:25:04,908 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:25:04,908 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:25:04,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:25:04,944 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;@115b43c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:25:04,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:25:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 106 states have (on average 1.8113207547169812) internal successors, (192), 107 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:25:04,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:04,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:04,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:04,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:04,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1365361707, now seen corresponding path program 1 times [2023-12-21 11:25:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024308030] [2023-12-21 11:25:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:05,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024308030] [2023-12-21 11:25:05,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024308030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:05,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:05,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:25:05,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999063733] [2023-12-21 11:25:05,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:05,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:25:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:05,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:25:05,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:25:05,191 INFO L87 Difference]: Start difference. First operand has 108 states, 106 states have (on average 1.8113207547169812) internal successors, (192), 107 states have internal predecessors, (192), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:05,230 INFO L93 Difference]: Finished difference Result 168 states and 296 transitions. [2023-12-21 11:25:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:25:05,232 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2023-12-21 11:25:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:05,239 INFO L225 Difference]: With dead ends: 168 [2023-12-21 11:25:05,239 INFO L226 Difference]: Without dead ends: 106 [2023-12-21 11:25:05,241 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 [2023-12-21 11:25:05,244 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:05,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:05,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-21 11:25:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-21 11:25:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.7809523809523808) internal successors, (187), 105 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 187 transitions. [2023-12-21 11:25:05,279 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 187 transitions. Word has length 34 [2023-12-21 11:25:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:05,279 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 187 transitions. [2023-12-21 11:25:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 187 transitions. [2023-12-21 11:25:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:25:05,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:05,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:05,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:25:05,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:05,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:05,283 INFO L85 PathProgramCache]: Analyzing trace with hash -323582035, now seen corresponding path program 1 times [2023-12-21 11:25:05,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:05,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596700747] [2023-12-21 11:25:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:05,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596700747] [2023-12-21 11:25:05,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596700747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:05,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:05,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:05,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533791939] [2023-12-21 11:25:05,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:05,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:05,531 INFO L87 Difference]: Start difference. First operand 106 states and 187 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:05,596 INFO L93 Difference]: Finished difference Result 223 states and 388 transitions. [2023-12-21 11:25:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:25:05,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-12-21 11:25:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:05,598 INFO L225 Difference]: With dead ends: 223 [2023-12-21 11:25:05,598 INFO L226 Difference]: Without dead ends: 163 [2023-12-21 11:25:05,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:05,601 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 98 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:05,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 522 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-21 11:25:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2023-12-21 11:25:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.5809523809523809) internal successors, (166), 105 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 166 transitions. [2023-12-21 11:25:05,609 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 166 transitions. Word has length 34 [2023-12-21 11:25:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:05,609 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 166 transitions. [2023-12-21 11:25:05,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 166 transitions. [2023-12-21 11:25:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 11:25:05,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:05,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:05,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:25:05,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:05,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash -664495791, now seen corresponding path program 1 times [2023-12-21 11:25:05,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:05,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895198344] [2023-12-21 11:25:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:05,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:05,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:05,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895198344] [2023-12-21 11:25:05,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895198344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:05,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:05,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624993410] [2023-12-21 11:25:05,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:05,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:05,691 INFO L87 Difference]: Start difference. First operand 106 states and 166 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:05,725 INFO L93 Difference]: Finished difference Result 211 states and 347 transitions. [2023-12-21 11:25:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2023-12-21 11:25:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:05,728 INFO L225 Difference]: With dead ends: 211 [2023-12-21 11:25:05,728 INFO L226 Difference]: Without dead ends: 154 [2023-12-21 11:25:05,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:05,732 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 74 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:05,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 357 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-21 11:25:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2023-12-21 11:25:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.6026490066225165) internal successors, (242), 151 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 242 transitions. [2023-12-21 11:25:05,747 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 242 transitions. Word has length 54 [2023-12-21 11:25:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:05,747 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 242 transitions. [2023-12-21 11:25:05,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 242 transitions. [2023-12-21 11:25:05,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 11:25:05,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:05,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:05,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:25:05,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:05,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash 797669900, now seen corresponding path program 1 times [2023-12-21 11:25:05,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:05,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093554286] [2023-12-21 11:25:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:05,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:05,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093554286] [2023-12-21 11:25:05,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093554286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:05,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:05,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:05,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792324984] [2023-12-21 11:25:05,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:05,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:05,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:05,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:05,820 INFO L87 Difference]: Start difference. First operand 152 states and 242 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:05,836 INFO L93 Difference]: Finished difference Result 257 states and 423 transitions. [2023-12-21 11:25:05,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:05,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-12-21 11:25:05,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:05,837 INFO L225 Difference]: With dead ends: 257 [2023-12-21 11:25:05,837 INFO L226 Difference]: Without dead ends: 200 [2023-12-21 11:25:05,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:05,843 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 83 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:05,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 377 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-21 11:25:05,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2023-12-21 11:25:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.6294416243654823) internal successors, (321), 197 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 321 transitions. [2023-12-21 11:25:05,857 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 321 transitions. Word has length 56 [2023-12-21 11:25:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:05,857 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 321 transitions. [2023-12-21 11:25:05,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 321 transitions. [2023-12-21 11:25:05,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 11:25:05,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:05,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:05,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:25:05,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:05,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:05,859 INFO L85 PathProgramCache]: Analyzing trace with hash 820759015, now seen corresponding path program 1 times [2023-12-21 11:25:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:05,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667458133] [2023-12-21 11:25:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:05,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:05,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:05,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667458133] [2023-12-21 11:25:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667458133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:05,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:05,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210756670] [2023-12-21 11:25:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:05,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:05,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:05,947 INFO L87 Difference]: Start difference. First operand 198 states and 321 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:05,967 INFO L93 Difference]: Finished difference Result 471 states and 786 transitions. [2023-12-21 11:25:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:05,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-12-21 11:25:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:05,970 INFO L225 Difference]: With dead ends: 471 [2023-12-21 11:25:05,970 INFO L226 Difference]: Without dead ends: 324 [2023-12-21 11:25:05,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:05,973 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 76 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:05,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 370 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:05,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-21 11:25:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 322. [2023-12-21 11:25:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.6510903426791277) internal successors, (530), 321 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 530 transitions. [2023-12-21 11:25:05,986 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 530 transitions. Word has length 56 [2023-12-21 11:25:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:05,988 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 530 transitions. [2023-12-21 11:25:05,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 530 transitions. [2023-12-21 11:25:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 11:25:05,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:05,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:05,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:25:05,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:05,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1140601438, now seen corresponding path program 1 times [2023-12-21 11:25:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:05,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236780178] [2023-12-21 11:25:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:06,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:06,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236780178] [2023-12-21 11:25:06,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236780178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:06,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:06,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:06,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333829282] [2023-12-21 11:25:06,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:06,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:06,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:06,054 INFO L87 Difference]: Start difference. First operand 322 states and 530 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:06,071 INFO L93 Difference]: Finished difference Result 589 states and 983 transitions. [2023-12-21 11:25:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:06,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-12-21 11:25:06,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:06,073 INFO L225 Difference]: With dead ends: 589 [2023-12-21 11:25:06,074 INFO L226 Difference]: Without dead ends: 442 [2023-12-21 11:25:06,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:06,075 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 77 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:06,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 369 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-21 11:25:06,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 440. [2023-12-21 11:25:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.65375854214123) internal successors, (726), 439 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 726 transitions. [2023-12-21 11:25:06,093 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 726 transitions. Word has length 58 [2023-12-21 11:25:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:06,093 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 726 transitions. [2023-12-21 11:25:06,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,094 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 726 transitions. [2023-12-21 11:25:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 11:25:06,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:06,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:06,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:25:06,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:06,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash 396641021, now seen corresponding path program 1 times [2023-12-21 11:25:06,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:06,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331437296] [2023-12-21 11:25:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:06,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:06,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331437296] [2023-12-21 11:25:06,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331437296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:06,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:06,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239286835] [2023-12-21 11:25:06,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:06,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:06,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:06,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:06,152 INFO L87 Difference]: Start difference. First operand 440 states and 726 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:06,175 INFO L93 Difference]: Finished difference Result 1143 states and 1907 transitions. [2023-12-21 11:25:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:06,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-12-21 11:25:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:06,180 INFO L225 Difference]: With dead ends: 1143 [2023-12-21 11:25:06,180 INFO L226 Difference]: Without dead ends: 760 [2023-12-21 11:25:06,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:06,182 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 70 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:06,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 363 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-21 11:25:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 758. [2023-12-21 11:25:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 1.6486129458388374) internal successors, (1248), 757 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1248 transitions. [2023-12-21 11:25:06,200 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1248 transitions. Word has length 58 [2023-12-21 11:25:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:06,200 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 1248 transitions. [2023-12-21 11:25:06,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1248 transitions. [2023-12-21 11:25:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:25:06,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:06,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:06,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:25:06,202 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:06,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1065978296, now seen corresponding path program 1 times [2023-12-21 11:25:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025959456] [2023-12-21 11:25:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:06,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:06,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025959456] [2023-12-21 11:25:06,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025959456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:06,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:06,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:06,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600003584] [2023-12-21 11:25:06,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:06,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:06,292 INFO L87 Difference]: Start difference. First operand 758 states and 1248 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:06,322 INFO L93 Difference]: Finished difference Result 1431 states and 2375 transitions. [2023-12-21 11:25:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:06,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2023-12-21 11:25:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:06,326 INFO L225 Difference]: With dead ends: 1431 [2023-12-21 11:25:06,326 INFO L226 Difference]: Without dead ends: 1048 [2023-12-21 11:25:06,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:06,327 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 71 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:06,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 361 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-21 11:25:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1046. [2023-12-21 11:25:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 1.6411483253588517) internal successors, (1715), 1045 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1715 transitions. [2023-12-21 11:25:06,349 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1715 transitions. Word has length 60 [2023-12-21 11:25:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:06,350 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1715 transitions. [2023-12-21 11:25:06,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1715 transitions. [2023-12-21 11:25:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:25:06,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:06,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:06,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:25:06,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:06,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1705450349, now seen corresponding path program 1 times [2023-12-21 11:25:06,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:06,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644992066] [2023-12-21 11:25:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:06,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:06,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644992066] [2023-12-21 11:25:06,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644992066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:06,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:06,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:25:06,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361666608] [2023-12-21 11:25:06,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:06,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:25:06,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:25:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:06,429 INFO L87 Difference]: Start difference. First operand 1046 states and 1715 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:06,575 INFO L93 Difference]: Finished difference Result 5330 states and 8921 transitions. [2023-12-21 11:25:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:25:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2023-12-21 11:25:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:06,601 INFO L225 Difference]: With dead ends: 5330 [2023-12-21 11:25:06,603 INFO L226 Difference]: Without dead ends: 4347 [2023-12-21 11:25:06,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:25:06,608 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 693 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:06,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 816 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:25:06,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2023-12-21 11:25:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 1963. [2023-12-21 11:25:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1962 states have (on average 1.6365953109072375) internal successors, (3211), 1962 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 3211 transitions. [2023-12-21 11:25:06,674 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 3211 transitions. Word has length 60 [2023-12-21 11:25:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:06,675 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 3211 transitions. [2023-12-21 11:25:06,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 3211 transitions. [2023-12-21 11:25:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:25:06,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:06,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:06,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:25:06,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:06,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1392074390, now seen corresponding path program 1 times [2023-12-21 11:25:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613303353] [2023-12-21 11:25:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:06,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:06,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:06,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613303353] [2023-12-21 11:25:06,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613303353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:06,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:06,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:06,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484134374] [2023-12-21 11:25:06,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:06,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:06,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:06,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:06,767 INFO L87 Difference]: Start difference. First operand 1963 states and 3211 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:06,882 INFO L93 Difference]: Finished difference Result 6425 states and 10649 transitions. [2023-12-21 11:25:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:25:06,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-21 11:25:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:06,899 INFO L225 Difference]: With dead ends: 6425 [2023-12-21 11:25:06,899 INFO L226 Difference]: Without dead ends: 4525 [2023-12-21 11:25:06,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:06,906 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 280 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:06,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 519 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2023-12-21 11:25:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 3225. [2023-12-21 11:25:07,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 3224 states have (on average 1.6380272952853598) internal successors, (5281), 3224 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 5281 transitions. [2023-12-21 11:25:07,044 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 5281 transitions. Word has length 61 [2023-12-21 11:25:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:07,045 INFO L495 AbstractCegarLoop]: Abstraction has 3225 states and 5281 transitions. [2023-12-21 11:25:07,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 5281 transitions. [2023-12-21 11:25:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 11:25:07,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:07,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:07,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:25:07,046 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:07,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash -261902500, now seen corresponding path program 1 times [2023-12-21 11:25:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129472666] [2023-12-21 11:25:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:07,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129472666] [2023-12-21 11:25:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129472666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:07,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:07,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752927358] [2023-12-21 11:25:07,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:07,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:07,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:07,118 INFO L87 Difference]: Start difference. First operand 3225 states and 5281 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:07,269 INFO L93 Difference]: Finished difference Result 10385 states and 17085 transitions. [2023-12-21 11:25:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:25:07,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2023-12-21 11:25:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:07,292 INFO L225 Difference]: With dead ends: 10385 [2023-12-21 11:25:07,293 INFO L226 Difference]: Without dead ends: 7223 [2023-12-21 11:25:07,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:07,298 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 278 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:07,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 521 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7223 states. [2023-12-21 11:25:07,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7223 to 5195. [2023-12-21 11:25:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 1.6266846361185985) internal successors, (8449), 5194 states have internal predecessors, (8449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 8449 transitions. [2023-12-21 11:25:07,492 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 8449 transitions. Word has length 62 [2023-12-21 11:25:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:07,492 INFO L495 AbstractCegarLoop]: Abstraction has 5195 states and 8449 transitions. [2023-12-21 11:25:07,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 8449 transitions. [2023-12-21 11:25:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 11:25:07,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:07,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:07,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:25:07,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:07,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash 419139475, now seen corresponding path program 1 times [2023-12-21 11:25:07,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:07,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200663630] [2023-12-21 11:25:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:07,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:07,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:07,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200663630] [2023-12-21 11:25:07,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200663630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:07,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:07,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:07,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640721198] [2023-12-21 11:25:07,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:07,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:07,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:07,544 INFO L87 Difference]: Start difference. First operand 5195 states and 8449 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:07,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:07,695 INFO L93 Difference]: Finished difference Result 16417 states and 26801 transitions. [2023-12-21 11:25:07,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:25:07,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 11:25:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:07,730 INFO L225 Difference]: With dead ends: 16417 [2023-12-21 11:25:07,730 INFO L226 Difference]: Without dead ends: 11285 [2023-12-21 11:25:07,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:07,739 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 276 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:07,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 528 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11285 states. [2023-12-21 11:25:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11285 to 8197. [2023-12-21 11:25:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.6150561249389945) internal successors, (13237), 8196 states have internal predecessors, (13237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 13237 transitions. [2023-12-21 11:25:07,969 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 13237 transitions. Word has length 63 [2023-12-21 11:25:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:07,969 INFO L495 AbstractCegarLoop]: Abstraction has 8197 states and 13237 transitions. [2023-12-21 11:25:07,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 13237 transitions. [2023-12-21 11:25:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 11:25:07,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:07,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:07,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:25:07,970 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:07,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1884757467, now seen corresponding path program 1 times [2023-12-21 11:25:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:07,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739282262] [2023-12-21 11:25:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:07,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:08,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:08,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739282262] [2023-12-21 11:25:08,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739282262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:08,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:08,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:25:08,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584598001] [2023-12-21 11:25:08,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:08,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:25:08,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:08,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:25:08,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:08,119 INFO L87 Difference]: Start difference. First operand 8197 states and 13237 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:08,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:08,250 INFO L93 Difference]: Finished difference Result 16333 states and 26390 transitions. [2023-12-21 11:25:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:25:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 11:25:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:08,262 INFO L225 Difference]: With dead ends: 16333 [2023-12-21 11:25:08,262 INFO L226 Difference]: Without dead ends: 8199 [2023-12-21 11:25:08,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:25:08,271 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 139 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:08,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 432 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2023-12-21 11:25:08,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 8197. [2023-12-21 11:25:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.5998047828208883) internal successors, (13112), 8196 states have internal predecessors, (13112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 13112 transitions. [2023-12-21 11:25:08,483 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 13112 transitions. Word has length 65 [2023-12-21 11:25:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:08,483 INFO L495 AbstractCegarLoop]: Abstraction has 8197 states and 13112 transitions. [2023-12-21 11:25:08,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 13112 transitions. [2023-12-21 11:25:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 11:25:08,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:08,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:08,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:25:08,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:08,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash -763515239, now seen corresponding path program 1 times [2023-12-21 11:25:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:08,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463905258] [2023-12-21 11:25:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:08,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:08,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:08,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463905258] [2023-12-21 11:25:08,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463905258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:08,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:08,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:25:08,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591956803] [2023-12-21 11:25:08,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:08,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:25:08,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:08,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:25:08,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:08,603 INFO L87 Difference]: Start difference. First operand 8197 states and 13112 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:08,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:08,839 INFO L93 Difference]: Finished difference Result 23495 states and 37728 transitions. [2023-12-21 11:25:08,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:25:08,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-21 11:25:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:08,862 INFO L225 Difference]: With dead ends: 23495 [2023-12-21 11:25:08,862 INFO L226 Difference]: Without dead ends: 15361 [2023-12-21 11:25:08,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:25:08,871 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 202 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:08,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 437 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15361 states. [2023-12-21 11:25:09,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15361 to 15359. [2023-12-21 11:25:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15359 states, 15358 states have (on average 1.5829535095715588) internal successors, (24311), 15358 states have internal predecessors, (24311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15359 states to 15359 states and 24311 transitions. [2023-12-21 11:25:09,193 INFO L78 Accepts]: Start accepts. Automaton has 15359 states and 24311 transitions. Word has length 68 [2023-12-21 11:25:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:09,193 INFO L495 AbstractCegarLoop]: Abstraction has 15359 states and 24311 transitions. [2023-12-21 11:25:09,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 15359 states and 24311 transitions. [2023-12-21 11:25:09,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:25:09,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:09,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:09,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:25:09,194 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:09,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2086312082, now seen corresponding path program 1 times [2023-12-21 11:25:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730728376] [2023-12-21 11:25:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:09,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730728376] [2023-12-21 11:25:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730728376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:09,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:09,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499618856] [2023-12-21 11:25:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:09,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:09,288 INFO L87 Difference]: Start difference. First operand 15359 states and 24311 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:09,416 INFO L93 Difference]: Finished difference Result 16447 states and 25760 transitions. [2023-12-21 11:25:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:25:09,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-21 11:25:09,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:09,445 INFO L225 Difference]: With dead ends: 16447 [2023-12-21 11:25:09,445 INFO L226 Difference]: Without dead ends: 16445 [2023-12-21 11:25:09,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:09,452 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:09,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 473 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:09,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16445 states. [2023-12-21 11:25:09,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16445 to 16083. [2023-12-21 11:25:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16083 states, 16082 states have (on average 1.5561497326203209) internal successors, (25026), 16082 states have internal predecessors, (25026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16083 states to 16083 states and 25026 transitions. [2023-12-21 11:25:09,877 INFO L78 Accepts]: Start accepts. Automaton has 16083 states and 25026 transitions. Word has length 69 [2023-12-21 11:25:09,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:09,877 INFO L495 AbstractCegarLoop]: Abstraction has 16083 states and 25026 transitions. [2023-12-21 11:25:09,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 16083 states and 25026 transitions. [2023-12-21 11:25:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:25:09,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:09,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:09,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:25:09,879 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:09,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash -455497030, now seen corresponding path program 1 times [2023-12-21 11:25:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:09,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166410797] [2023-12-21 11:25:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166410797] [2023-12-21 11:25:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166410797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:09,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:09,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279601228] [2023-12-21 11:25:09,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:09,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:09,925 INFO L87 Difference]: Start difference. First operand 16083 states and 25026 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:10,279 INFO L93 Difference]: Finished difference Result 48009 states and 74640 transitions. [2023-12-21 11:25:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:10,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 11:25:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:10,337 INFO L225 Difference]: With dead ends: 48009 [2023-12-21 11:25:10,337 INFO L226 Difference]: Without dead ends: 31989 [2023-12-21 11:25:10,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:10,360 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 132 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:10,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 405 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31989 states. [2023-12-21 11:25:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31989 to 31987. [2023-12-21 11:25:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31987 states, 31986 states have (on average 1.5406427812167824) internal successors, (49279), 31986 states have internal predecessors, (49279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31987 states to 31987 states and 49279 transitions. [2023-12-21 11:25:10,987 INFO L78 Accepts]: Start accepts. Automaton has 31987 states and 49279 transitions. Word has length 93 [2023-12-21 11:25:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:10,987 INFO L495 AbstractCegarLoop]: Abstraction has 31987 states and 49279 transitions. [2023-12-21 11:25:10,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 31987 states and 49279 transitions. [2023-12-21 11:25:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:25:10,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:10,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:10,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:25:10,990 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:10,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1701678209, now seen corresponding path program 1 times [2023-12-21 11:25:10,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:10,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925108668] [2023-12-21 11:25:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:10,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:25:11,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925108668] [2023-12-21 11:25:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925108668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:11,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:11,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:11,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346502089] [2023-12-21 11:25:11,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:11,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:11,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:11,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:11,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:11,060 INFO L87 Difference]: Start difference. First operand 31987 states and 49279 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:11,774 INFO L93 Difference]: Finished difference Result 95483 states and 146955 transitions. [2023-12-21 11:25:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:11,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 93 [2023-12-21 11:25:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:11,921 INFO L225 Difference]: With dead ends: 95483 [2023-12-21 11:25:11,921 INFO L226 Difference]: Without dead ends: 63600 [2023-12-21 11:25:11,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:11,943 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 101 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:11,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 371 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:11,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63600 states. [2023-12-21 11:25:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63600 to 63598. [2023-12-21 11:25:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63598 states, 63597 states have (on average 1.5248518011855905) internal successors, (96976), 63597 states have internal predecessors, (96976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63598 states to 63598 states and 96976 transitions. [2023-12-21 11:25:13,407 INFO L78 Accepts]: Start accepts. Automaton has 63598 states and 96976 transitions. Word has length 93 [2023-12-21 11:25:13,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:13,408 INFO L495 AbstractCegarLoop]: Abstraction has 63598 states and 96976 transitions. [2023-12-21 11:25:13,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:13,408 INFO L276 IsEmpty]: Start isEmpty. Operand 63598 states and 96976 transitions. [2023-12-21 11:25:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:25:13,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:13,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:13,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:25:13,413 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:13,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:13,413 INFO L85 PathProgramCache]: Analyzing trace with hash 485370668, now seen corresponding path program 1 times [2023-12-21 11:25:13,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:13,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630881985] [2023-12-21 11:25:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:13,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:25:13,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630881985] [2023-12-21 11:25:13,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630881985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:13,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:13,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:25:13,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758763598] [2023-12-21 11:25:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:13,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:25:13,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:25:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:13,494 INFO L87 Difference]: Start difference. First operand 63598 states and 96976 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:14,906 INFO L93 Difference]: Finished difference Result 157366 states and 241476 transitions. [2023-12-21 11:25:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:25:14,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 93 [2023-12-21 11:25:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:15,213 INFO L225 Difference]: With dead ends: 157366 [2023-12-21 11:25:15,214 INFO L226 Difference]: Without dead ends: 126084 [2023-12-21 11:25:15,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:25:15,260 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 338 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:15,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 755 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:15,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126084 states. [2023-12-21 11:25:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126084 to 98166. [2023-12-21 11:25:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98166 states, 98165 states have (on average 1.5222940966739673) internal successors, (149436), 98165 states have internal predecessors, (149436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98166 states to 98166 states and 149436 transitions. [2023-12-21 11:25:17,463 INFO L78 Accepts]: Start accepts. Automaton has 98166 states and 149436 transitions. Word has length 93 [2023-12-21 11:25:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:17,463 INFO L495 AbstractCegarLoop]: Abstraction has 98166 states and 149436 transitions. [2023-12-21 11:25:17,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 98166 states and 149436 transitions. [2023-12-21 11:25:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:25:17,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:17,469 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:25:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:25:17,469 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:17,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:17,469 INFO L85 PathProgramCache]: Analyzing trace with hash -659998703, now seen corresponding path program 1 times [2023-12-21 11:25:17,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:17,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721807149] [2023-12-21 11:25:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:17,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:25:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:17,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721807149] [2023-12-21 11:25:17,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721807149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:17,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:17,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146452501] [2023-12-21 11:25:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:17,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:17,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:17,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:17,509 INFO L87 Difference]: Start difference. First operand 98166 states and 149436 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:18,782 INFO L93 Difference]: Finished difference Result 147527 states and 224061 transitions. [2023-12-21 11:25:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:18,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 11:25:18,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:18,952 INFO L225 Difference]: With dead ends: 147527 [2023-12-21 11:25:18,952 INFO L226 Difference]: Without dead ends: 98280 [2023-12-21 11:25:18,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:19,000 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 122 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:19,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 458 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98280 states. [2023-12-21 11:25:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98280 to 98278. [2023-12-21 11:25:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98278 states, 98277 states have (on average 1.5089390193025836) internal successors, (148294), 98277 states have internal predecessors, (148294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98278 states to 98278 states and 148294 transitions. [2023-12-21 11:25:21,011 INFO L78 Accepts]: Start accepts. Automaton has 98278 states and 148294 transitions. Word has length 93 [2023-12-21 11:25:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:21,012 INFO L495 AbstractCegarLoop]: Abstraction has 98278 states and 148294 transitions. [2023-12-21 11:25:21,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 98278 states and 148294 transitions. [2023-12-21 11:25:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:25:21,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:21,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:21,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:25:21,019 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:21,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1115008659, now seen corresponding path program 1 times [2023-12-21 11:25:21,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:21,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881561858] [2023-12-21 11:25:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:21,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:25:21,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:21,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881561858] [2023-12-21 11:25:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881561858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:21,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:25:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738515536] [2023-12-21 11:25:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:21,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:25:21,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:25:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:21,106 INFO L87 Difference]: Start difference. First operand 98278 states and 148294 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:23,074 INFO L93 Difference]: Finished difference Result 176710 states and 268718 transitions. [2023-12-21 11:25:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:25:23,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 93 [2023-12-21 11:25:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:23,358 INFO L225 Difference]: With dead ends: 176710 [2023-12-21 11:25:23,359 INFO L226 Difference]: Without dead ends: 146388 [2023-12-21 11:25:23,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:25:23,405 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 342 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:23,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 680 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146388 states. [2023-12-21 11:25:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146388 to 133726. [2023-12-21 11:25:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133726 states, 133725 states have (on average 1.511714339128809) internal successors, (202154), 133725 states have internal predecessors, (202154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133726 states to 133726 states and 202154 transitions. [2023-12-21 11:25:26,463 INFO L78 Accepts]: Start accepts. Automaton has 133726 states and 202154 transitions. Word has length 93 [2023-12-21 11:25:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:26,464 INFO L495 AbstractCegarLoop]: Abstraction has 133726 states and 202154 transitions. [2023-12-21 11:25:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 133726 states and 202154 transitions. [2023-12-21 11:25:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:25:26,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:26,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:25:26,477 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:26,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -163338179, now seen corresponding path program 1 times [2023-12-21 11:25:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903859501] [2023-12-21 11:25:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 11:25:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:26,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903859501] [2023-12-21 11:25:26,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903859501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:26,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:26,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:25:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637022067] [2023-12-21 11:25:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:26,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:25:26,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:26,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:25:26,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:26,511 INFO L87 Difference]: Start difference. First operand 133726 states and 202154 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:30,078 INFO L93 Difference]: Finished difference Result 399390 states and 603107 transitions. [2023-12-21 11:25:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:25:30,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 93 [2023-12-21 11:25:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:30,792 INFO L225 Difference]: With dead ends: 399390 [2023-12-21 11:25:30,792 INFO L226 Difference]: Without dead ends: 265968 [2023-12-21 11:25:30,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:25:30,908 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 116 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:30,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 394 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265968 states. [2023-12-21 11:25:35,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265968 to 265966. [2023-12-21 11:25:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265966 states, 265965 states have (on average 1.4960051134547778) internal successors, (397885), 265965 states have internal predecessors, (397885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265966 states to 265966 states and 397885 transitions. [2023-12-21 11:25:36,515 INFO L78 Accepts]: Start accepts. Automaton has 265966 states and 397885 transitions. Word has length 93 [2023-12-21 11:25:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:36,515 INFO L495 AbstractCegarLoop]: Abstraction has 265966 states and 397885 transitions. [2023-12-21 11:25:36,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 265966 states and 397885 transitions. [2023-12-21 11:25:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:25:36,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:36,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:36,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:25:36,524 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:36,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash 753817273, now seen corresponding path program 1 times [2023-12-21 11:25:36,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:36,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40168899] [2023-12-21 11:25:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:36,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:25:36,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:36,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40168899] [2023-12-21 11:25:36,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40168899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:36,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:36,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:25:36,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957094625] [2023-12-21 11:25:36,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:36,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:25:36,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:25:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:25:36,612 INFO L87 Difference]: Start difference. First operand 265966 states and 397885 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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) [2023-12-21 11:25:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:40,370 INFO L93 Difference]: Finished difference Result 375750 states and 565569 transitions. [2023-12-21 11:25:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:25:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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 93 [2023-12-21 11:25:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:41,077 INFO L225 Difference]: With dead ends: 375750 [2023-12-21 11:25:41,077 INFO L226 Difference]: Without dead ends: 315508 [2023-12-21 11:25:41,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:25:41,362 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 348 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:41,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 752 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:25:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315508 states. [2023-12-21 11:25:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315508 to 305326. [2023-12-21 11:25:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305326 states, 305325 states have (on average 1.4986162286088593) internal successors, (457565), 305325 states have internal predecessors, (457565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305326 states to 305326 states and 457565 transitions. [2023-12-21 11:25:47,838 INFO L78 Accepts]: Start accepts. Automaton has 305326 states and 457565 transitions. Word has length 93 [2023-12-21 11:25:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:47,838 INFO L495 AbstractCegarLoop]: Abstraction has 305326 states and 457565 transitions. [2023-12-21 11:25:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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) [2023-12-21 11:25:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 305326 states and 457565 transitions. [2023-12-21 11:25:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:25:47,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:47,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:25:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 11:25:47,847 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:47,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2098867697, now seen corresponding path program 1 times [2023-12-21 11:25:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948906534] [2023-12-21 11:25:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:25:47,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:47,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948906534] [2023-12-21 11:25:47,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948906534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:47,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:47,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:47,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211381959] [2023-12-21 11:25:47,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:47,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:47,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:47,902 INFO L87 Difference]: Start difference. First operand 305326 states and 457565 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:25:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:52,555 INFO L93 Difference]: Finished difference Result 500188 states and 755816 transitions. [2023-12-21 11:25:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:25:52,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 11:25:52,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:53,588 INFO L225 Difference]: With dead ends: 500188 [2023-12-21 11:25:53,588 INFO L226 Difference]: Without dead ends: 397786 [2023-12-21 11:25:53,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:53,698 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 141 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:53,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 541 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:25:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397786 states. [2023-12-21 11:26:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397786 to 387606. [2023-12-21 11:26:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387606 states, 387605 states have (on average 1.4998903522916371) internal successors, (581365), 387605 states have internal predecessors, (581365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387606 states to 387606 states and 581365 transitions. [2023-12-21 11:26:02,243 INFO L78 Accepts]: Start accepts. Automaton has 387606 states and 581365 transitions. Word has length 94 [2023-12-21 11:26:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:02,243 INFO L495 AbstractCegarLoop]: Abstraction has 387606 states and 581365 transitions. [2023-12-21 11:26:02,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:02,244 INFO L276 IsEmpty]: Start isEmpty. Operand 387606 states and 581365 transitions. [2023-12-21 11:26:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:26:02,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:02,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:02,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 11:26:02,257 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:02,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1281219247, now seen corresponding path program 1 times [2023-12-21 11:26:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:02,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856419075] [2023-12-21 11:26:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:26:02,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:02,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856419075] [2023-12-21 11:26:02,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856419075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:02,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:02,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:02,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584550547] [2023-12-21 11:26:02,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:02,292 INFO L87 Difference]: Start difference. First operand 387606 states and 581365 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:10,433 INFO L93 Difference]: Finished difference Result 841162 states and 1268859 transitions. [2023-12-21 11:26:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:10,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 11:26:10,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:11,796 INFO L225 Difference]: With dead ends: 841162 [2023-12-21 11:26:11,796 INFO L226 Difference]: Without dead ends: 657304 [2023-12-21 11:26:12,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:12,181 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 60 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:12,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 295 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657304 states. [2023-12-21 11:26:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657304 to 655094. [2023-12-21 11:26:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655094 states, 655093 states have (on average 1.5006495260978212) internal successors, (983065), 655093 states have internal predecessors, (983065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655094 states to 655094 states and 983065 transitions. [2023-12-21 11:26:26,765 INFO L78 Accepts]: Start accepts. Automaton has 655094 states and 983065 transitions. Word has length 94 [2023-12-21 11:26:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:26,766 INFO L495 AbstractCegarLoop]: Abstraction has 655094 states and 983065 transitions. [2023-12-21 11:26:26,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 655094 states and 983065 transitions. [2023-12-21 11:26:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:26:26,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:26,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:26,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 11:26:26,775 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:26,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1233936713, now seen corresponding path program 1 times [2023-12-21 11:26:26,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:26,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386935716] [2023-12-21 11:26:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:26,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:26,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386935716] [2023-12-21 11:26:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386935716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:26,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:26,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48589130] [2023-12-21 11:26:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:26,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:26,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:26,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:26,837 INFO L87 Difference]: Start difference. First operand 655094 states and 983065 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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)