/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:25:06,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:25:06,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:25:06,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:25:06,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:25:06,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:25:06,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:25:06,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:25:06,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:25:06,436 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:25:06,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:25:06,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:25:06,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:25:06,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:25:06,438 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:25:06,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:25:06,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:25:06,438 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:25:06,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:25:06,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:25:06,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:25:06,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:25:06,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:25:06,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:25:06,440 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:25:06,440 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:25:06,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:25:06,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:25:06,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:25:06,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:25:06,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:25:06,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:25:06,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:25:06,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:25:06,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:25:06,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:25:06,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:25:06,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:25:06,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:25:06,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:25:06,443 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:25:06,443 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:25:06,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:25:06,443 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:25:06,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:25:06,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:25:06,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:25:06,649 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:25:06,652 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:25:06,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2023-12-19 00:25:07,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:25:07,950 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:25:07,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2023-12-19 00:25:07,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae130929/b7a1ec7ae80b4084a56f31778c39e429/FLAGaf4b1edab [2023-12-19 00:25:07,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae130929/b7a1ec7ae80b4084a56f31778c39e429 [2023-12-19 00:25:07,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:25:07,992 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:25:07,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:25:07,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:25:07,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:25:07,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:25:07" (1/1) ... [2023-12-19 00:25:07,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728d1cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:07, skipping insertion in model container [2023-12-19 00:25:07,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:25:07" (1/1) ... [2023-12-19 00:25:08,094 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:25:08,387 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[11640,11653] [2023-12-19 00:25:08,410 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[12482,12495] [2023-12-19 00:25:08,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:25:08,910 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:25:08,937 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[11640,11653] [2023-12-19 00:25:08,938 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[12482,12495] [2023-12-19 00:25:09,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:25:09,278 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:25:09,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09 WrapperNode [2023-12-19 00:25:09,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:25:09,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:25:09,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:25:09,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:25:09,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,580 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5094 [2023-12-19 00:25:09,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:25:09,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:25:09,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:25:09,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:25:09,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,713 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]. [2023-12-19 00:25:09,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:25:09,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:25:09,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:25:09,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:25:09,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (1/1) ... [2023-12-19 00:25:09,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:25:09,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:25:09,957 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) [2023-12-19 00:25:09,967 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 [2023-12-19 00:25:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:25:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:25:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:25:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:25:10,052 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:25:10,053 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:25:13,022 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:25:13,061 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:25:13,061 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:25:13,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:25:13 BoogieIcfgContainer [2023-12-19 00:25:13,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:25:13,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:25:13,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:25:13,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:25:13,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:25:07" (1/3) ... [2023-12-19 00:25:13,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7235f8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:25:13, skipping insertion in model container [2023-12-19 00:25:13,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:25:09" (2/3) ... [2023-12-19 00:25:13,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7235f8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:25:13, skipping insertion in model container [2023-12-19 00:25:13,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:25:13" (3/3) ... [2023-12-19 00:25:13,067 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2023-12-19 00:25:13,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:25:13,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:25:13,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:25:13,135 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;@41deaac3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:25:13,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:25:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:13,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 00:25:13,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:13,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 00:25:13,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:13,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 927799355, now seen corresponding path program 1 times [2023-12-19 00:25:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:13,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299810312] [2023-12-19 00:25:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:13,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:13,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:13,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299810312] [2023-12-19 00:25:13,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299810312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:13,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:13,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:25:13,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832483190] [2023-12-19 00:25:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:13,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:13,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:13,321 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:16,231 INFO L93 Difference]: Finished difference Result 2387 states and 4717 transitions. [2023-12-19 00:25:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-19 00:25:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:16,252 INFO L225 Difference]: With dead ends: 2387 [2023-12-19 00:25:16,252 INFO L226 Difference]: Without dead ends: 1581 [2023-12-19 00:25:16,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:16,258 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1000 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:16,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 249 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 00:25:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-19 00:25:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2023-12-19 00:25:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.8429385687143762) internal successors, (2910), 1580 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2910 transitions. [2023-12-19 00:25:16,330 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2910 transitions. Word has length 6 [2023-12-19 00:25:16,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:16,330 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2910 transitions. [2023-12-19 00:25:16,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2910 transitions. [2023-12-19 00:25:16,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:25:16,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:16,332 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] [2023-12-19 00:25:16,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:25:16,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:16,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash 106191434, now seen corresponding path program 1 times [2023-12-19 00:25:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688950939] [2023-12-19 00:25:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:16,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:16,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688950939] [2023-12-19 00:25:16,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688950939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:16,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:16,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:25:16,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680130374] [2023-12-19 00:25:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:25:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:25:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:25:16,590 INFO L87 Difference]: Start difference. First operand 1581 states and 2910 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:16,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:16,640 INFO L93 Difference]: Finished difference Result 1625 states and 2979 transitions. [2023-12-19 00:25:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:25:16,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:25:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:16,645 INFO L225 Difference]: With dead ends: 1625 [2023-12-19 00:25:16,645 INFO L226 Difference]: Without dead ends: 1581 [2023-12-19 00:25:16,646 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 [2023-12-19 00:25:16,647 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:16,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:16,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-19 00:25:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2023-12-19 00:25:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.8233058898036731) internal successors, (2879), 1580 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2879 transitions. [2023-12-19 00:25:16,672 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2879 transitions. Word has length 21 [2023-12-19 00:25:16,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:16,672 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2879 transitions. [2023-12-19 00:25:16,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2879 transitions. [2023-12-19 00:25:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 00:25:16,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:16,675 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] [2023-12-19 00:25:16,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:25:16,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:16,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:16,676 INFO L85 PathProgramCache]: Analyzing trace with hash -945524767, now seen corresponding path program 1 times [2023-12-19 00:25:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:16,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499273565] [2023-12-19 00:25:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:16,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:16,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499273565] [2023-12-19 00:25:16,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499273565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:16,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:16,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:25:16,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788344001] [2023-12-19 00:25:16,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:16,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:25:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:25:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:25:16,848 INFO L87 Difference]: Start difference. First operand 1581 states and 2879 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:17,032 INFO L93 Difference]: Finished difference Result 1991 states and 3539 transitions. [2023-12-19 00:25:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 00:25:17,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-19 00:25:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:17,039 INFO L225 Difference]: With dead ends: 1991 [2023-12-19 00:25:17,039 INFO L226 Difference]: Without dead ends: 1950 [2023-12-19 00:25:17,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 00:25:17,040 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:17,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:25:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2023-12-19 00:25:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1620. [2023-12-19 00:25:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1618 states have (on average 1.8182941903584673) internal successors, (2942), 1619 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2942 transitions. [2023-12-19 00:25:17,066 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2942 transitions. Word has length 51 [2023-12-19 00:25:17,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:17,066 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 2942 transitions. [2023-12-19 00:25:17,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2942 transitions. [2023-12-19 00:25:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:25:17,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:17,067 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] [2023-12-19 00:25:17,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:25:17,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:17,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1737093297, now seen corresponding path program 1 times [2023-12-19 00:25:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:17,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046666809] [2023-12-19 00:25:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:17,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046666809] [2023-12-19 00:25:17,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046666809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:17,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:17,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486025289] [2023-12-19 00:25:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:17,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:17,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:17,118 INFO L87 Difference]: Start difference. First operand 1620 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:17,146 INFO L93 Difference]: Finished difference Result 1769 states and 3181 transitions. [2023-12-19 00:25:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:17,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-19 00:25:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:17,151 INFO L225 Difference]: With dead ends: 1769 [2023-12-19 00:25:17,152 INFO L226 Difference]: Without dead ends: 1689 [2023-12-19 00:25:17,152 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 [2023-12-19 00:25:17,153 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 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 [2023-12-19 00:25:17,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-12-19 00:25:17,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2023-12-19 00:25:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.8089020771513353) internal successors, (3048), 1686 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3048 transitions. [2023-12-19 00:25:17,177 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3048 transitions. Word has length 53 [2023-12-19 00:25:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:17,177 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3048 transitions. [2023-12-19 00:25:17,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3048 transitions. [2023-12-19 00:25:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:25:17,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:17,179 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] [2023-12-19 00:25:17,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:25:17,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:17,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1739238249, now seen corresponding path program 1 times [2023-12-19 00:25:17,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:17,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299256418] [2023-12-19 00:25:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:17,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:17,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:17,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299256418] [2023-12-19 00:25:17,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299256418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:17,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:17,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:25:17,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989686650] [2023-12-19 00:25:17,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:17,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:25:17,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:25:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:25:17,439 INFO L87 Difference]: Start difference. First operand 1687 states and 3048 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:17,573 INFO L93 Difference]: Finished difference Result 1836 states and 3284 transitions. [2023-12-19 00:25:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:25:17,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-19 00:25:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:17,579 INFO L225 Difference]: With dead ends: 1836 [2023-12-19 00:25:17,579 INFO L226 Difference]: Without dead ends: 1689 [2023-12-19 00:25:17,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-19 00:25:17,582 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1507 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:17,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1840 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-12-19 00:25:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2023-12-19 00:25:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.8077151335311572) internal successors, (3046), 1686 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3046 transitions. [2023-12-19 00:25:17,610 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3046 transitions. Word has length 53 [2023-12-19 00:25:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:17,610 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3046 transitions. [2023-12-19 00:25:17,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3046 transitions. [2023-12-19 00:25:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 00:25:17,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:17,612 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] [2023-12-19 00:25:17,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:25:17,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2047293398, now seen corresponding path program 1 times [2023-12-19 00:25:17,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:17,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941388735] [2023-12-19 00:25:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:17,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:17,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:17,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941388735] [2023-12-19 00:25:17,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941388735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:17,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:17,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:25:17,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436328653] [2023-12-19 00:25:17,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:17,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:25:17,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:17,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:25:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:25:17,752 INFO L87 Difference]: Start difference. First operand 1687 states and 3046 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2023-12-19 00:25:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:17,780 INFO L93 Difference]: Finished difference Result 1695 states and 3055 transitions. [2023-12-19 00:25:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:25:17,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 [2023-12-19 00:25:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:17,786 INFO L225 Difference]: With dead ends: 1695 [2023-12-19 00:25:17,786 INFO L226 Difference]: Without dead ends: 1693 [2023-12-19 00:25:17,786 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 [2023-12-19 00:25:17,789 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:17,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:17,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2023-12-19 00:25:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2023-12-19 00:25:17,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1689 states have (on average 1.8052101835405565) internal successors, (3049), 1690 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 3049 transitions. [2023-12-19 00:25:17,821 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 3049 transitions. Word has length 54 [2023-12-19 00:25:17,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:17,821 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 3049 transitions. [2023-12-19 00:25:17,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2023-12-19 00:25:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 3049 transitions. [2023-12-19 00:25:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:25:17,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:17,822 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] [2023-12-19 00:25:17,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:25:17,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:17,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash -115096663, now seen corresponding path program 1 times [2023-12-19 00:25:17,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:17,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099251507] [2023-12-19 00:25:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099251507] [2023-12-19 00:25:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099251507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:17,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:17,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:17,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404619781] [2023-12-19 00:25:17,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:17,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:17,880 INFO L87 Difference]: Start difference. First operand 1691 states and 3049 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:17,903 INFO L93 Difference]: Finished difference Result 1853 states and 3302 transitions. [2023-12-19 00:25:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:17,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:25:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:17,909 INFO L225 Difference]: With dead ends: 1853 [2023-12-19 00:25:17,909 INFO L226 Difference]: Without dead ends: 1769 [2023-12-19 00:25:17,910 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 [2023-12-19 00:25:17,912 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 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 [2023-12-19 00:25:17,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2023-12-19 00:25:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1767. [2023-12-19 00:25:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1765 states have (on average 1.7937677053824364) internal successors, (3166), 1766 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 3166 transitions. [2023-12-19 00:25:17,938 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 3166 transitions. Word has length 55 [2023-12-19 00:25:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:17,938 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 3166 transitions. [2023-12-19 00:25:17,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 3166 transitions. [2023-12-19 00:25:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:25:17,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:17,939 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] [2023-12-19 00:25:17,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:25:17,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:17,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash -343735895, now seen corresponding path program 1 times [2023-12-19 00:25:17,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:17,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802664527] [2023-12-19 00:25:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:17,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802664527] [2023-12-19 00:25:17,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802664527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:17,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:17,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:17,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047705583] [2023-12-19 00:25:17,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:17,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:17,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:17,973 INFO L87 Difference]: Start difference. First operand 1767 states and 3166 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:17,999 INFO L93 Difference]: Finished difference Result 2193 states and 3826 transitions. [2023-12-19 00:25:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:17,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:25:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:18,005 INFO L225 Difference]: With dead ends: 2193 [2023-12-19 00:25:18,005 INFO L226 Difference]: Without dead ends: 1968 [2023-12-19 00:25:18,005 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 [2023-12-19 00:25:18,006 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 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 [2023-12-19 00:25:18,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2023-12-19 00:25:18,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1966. [2023-12-19 00:25:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1964 states have (on average 1.765784114052953) internal successors, (3468), 1965 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3468 transitions. [2023-12-19 00:25:18,033 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3468 transitions. Word has length 55 [2023-12-19 00:25:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:18,033 INFO L495 AbstractCegarLoop]: Abstraction has 1966 states and 3468 transitions. [2023-12-19 00:25:18,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3468 transitions. [2023-12-19 00:25:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:25:18,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:18,034 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] [2023-12-19 00:25:18,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:25:18,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:18,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash -969391959, now seen corresponding path program 1 times [2023-12-19 00:25:18,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:18,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056969653] [2023-12-19 00:25:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:18,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:18,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056969653] [2023-12-19 00:25:18,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056969653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:18,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:18,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324754673] [2023-12-19 00:25:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:18,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:18,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:18,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:18,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:18,066 INFO L87 Difference]: Start difference. First operand 1966 states and 3468 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:18,096 INFO L93 Difference]: Finished difference Result 2766 states and 4690 transitions. [2023-12-19 00:25:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:18,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:25:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:18,103 INFO L225 Difference]: With dead ends: 2766 [2023-12-19 00:25:18,103 INFO L226 Difference]: Without dead ends: 2342 [2023-12-19 00:25:18,104 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 [2023-12-19 00:25:18,105 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 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 [2023-12-19 00:25:18,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2023-12-19 00:25:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2340. [2023-12-19 00:25:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2338 states have (on average 1.7211291702309666) internal successors, (4024), 2339 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 4024 transitions. [2023-12-19 00:25:18,143 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 4024 transitions. Word has length 55 [2023-12-19 00:25:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:18,143 INFO L495 AbstractCegarLoop]: Abstraction has 2340 states and 4024 transitions. [2023-12-19 00:25:18,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 4024 transitions. [2023-12-19 00:25:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:25:18,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:18,144 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] [2023-12-19 00:25:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:25:18,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:18,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -80658519, now seen corresponding path program 1 times [2023-12-19 00:25:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:18,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033733855] [2023-12-19 00:25:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:18,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:18,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033733855] [2023-12-19 00:25:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033733855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:18,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:18,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:18,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084471156] [2023-12-19 00:25:18,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:18,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:18,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:18,176 INFO L87 Difference]: Start difference. First operand 2340 states and 4024 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:18,216 INFO L93 Difference]: Finished difference Result 3840 states and 6274 transitions. [2023-12-19 00:25:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:18,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:25:18,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:18,225 INFO L225 Difference]: With dead ends: 3840 [2023-12-19 00:25:18,225 INFO L226 Difference]: Without dead ends: 3042 [2023-12-19 00:25:18,227 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 [2023-12-19 00:25:18,227 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 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 [2023-12-19 00:25:18,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:18,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2023-12-19 00:25:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3040. [2023-12-19 00:25:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3038 states have (on average 1.6589861751152073) internal successors, (5040), 3039 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 5040 transitions. [2023-12-19 00:25:18,281 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 5040 transitions. Word has length 55 [2023-12-19 00:25:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:18,281 INFO L495 AbstractCegarLoop]: Abstraction has 3040 states and 5040 transitions. [2023-12-19 00:25:18,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 5040 transitions. [2023-12-19 00:25:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:25:18,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:18,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:18,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:25:18,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:18,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -383679831, now seen corresponding path program 1 times [2023-12-19 00:25:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:18,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972238139] [2023-12-19 00:25:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:18,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:18,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:18,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972238139] [2023-12-19 00:25:18,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972238139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:18,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:18,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:18,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055499613] [2023-12-19 00:25:18,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:18,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:18,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:18,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:18,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:18,314 INFO L87 Difference]: Start difference. First operand 3040 states and 5040 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:18,370 INFO L93 Difference]: Finished difference Result 5844 states and 9154 transitions. [2023-12-19 00:25:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:25:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:18,381 INFO L225 Difference]: With dead ends: 5844 [2023-12-19 00:25:18,381 INFO L226 Difference]: Without dead ends: 4346 [2023-12-19 00:25:18,383 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 [2023-12-19 00:25:18,384 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 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 [2023-12-19 00:25:18,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2023-12-19 00:25:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 4344. [2023-12-19 00:25:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.5845232611699678) internal successors, (6880), 4343 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6880 transitions. [2023-12-19 00:25:18,466 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6880 transitions. Word has length 55 [2023-12-19 00:25:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:18,467 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6880 transitions. [2023-12-19 00:25:18,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6880 transitions. [2023-12-19 00:25:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:25:18,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:18,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:25:18,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:18,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -290597167, now seen corresponding path program 1 times [2023-12-19 00:25:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389335788] [2023-12-19 00:25:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:25:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389335788] [2023-12-19 00:25:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389335788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:18,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:18,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:25:18,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125082273] [2023-12-19 00:25:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:18,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:25:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:25:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:25:18,569 INFO L87 Difference]: Start difference. First operand 4344 states and 6880 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:18,972 INFO L93 Difference]: Finished difference Result 18132 states and 26870 transitions. [2023-12-19 00:25:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:25:18,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:25:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:18,998 INFO L225 Difference]: With dead ends: 18132 [2023-12-19 00:25:18,998 INFO L226 Difference]: Without dead ends: 16146 [2023-12-19 00:25:19,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:25:19,005 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6291 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6291 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:19,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6291 Valid, 3561 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:25:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2023-12-19 00:25:19,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2023-12-19 00:25:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.5307030554731533) internal successors, (10320), 6743 states have internal predecessors, (10320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 10320 transitions. [2023-12-19 00:25:19,246 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 10320 transitions. Word has length 73 [2023-12-19 00:25:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:19,246 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 10320 transitions. [2023-12-19 00:25:19,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 10320 transitions. [2023-12-19 00:25:19,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:25:19,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:19,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:19,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:25:19,249 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:19,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -519236399, now seen corresponding path program 1 times [2023-12-19 00:25:19,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:19,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769155422] [2023-12-19 00:25:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:19,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:25:19,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:19,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769155422] [2023-12-19 00:25:19,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769155422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:19,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:19,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:25:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065816404] [2023-12-19 00:25:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:19,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:25:19,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:25:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:25:19,356 INFO L87 Difference]: Start difference. First operand 6744 states and 10320 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2023-12-19 00:25:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:19,747 INFO L93 Difference]: Finished difference Result 20932 states and 30902 transitions. [2023-12-19 00:25:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:25:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 73 [2023-12-19 00:25:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:19,775 INFO L225 Difference]: With dead ends: 20932 [2023-12-19 00:25:19,775 INFO L226 Difference]: Without dead ends: 18130 [2023-12-19 00:25:19,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:25:19,784 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6338 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:19,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3574 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:25:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2023-12-19 00:25:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2023-12-19 00:25:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.4945889500664515) internal successors, (15744), 10535 states have internal predecessors, (15744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15744 transitions. [2023-12-19 00:25:20,162 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15744 transitions. Word has length 73 [2023-12-19 00:25:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:20,163 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 15744 transitions. [2023-12-19 00:25:20,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2023-12-19 00:25:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15744 transitions. [2023-12-19 00:25:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:25:20,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:20,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:20,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:25:20,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:20,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1144892463, now seen corresponding path program 1 times [2023-12-19 00:25:20,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:20,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808947307] [2023-12-19 00:25:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:20,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:25:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808947307] [2023-12-19 00:25:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808947307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:20,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:20,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:25:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662574332] [2023-12-19 00:25:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:25:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:25:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:25:20,261 INFO L87 Difference]: Start difference. First operand 10536 states and 15744 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:20,664 INFO L93 Difference]: Finished difference Result 23732 states and 34918 transitions. [2023-12-19 00:25:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:25:20,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-12-19 00:25:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:20,693 INFO L225 Difference]: With dead ends: 23732 [2023-12-19 00:25:20,693 INFO L226 Difference]: Without dead ends: 20930 [2023-12-19 00:25:20,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:25:20,702 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:20,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:25:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2023-12-19 00:25:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2023-12-19 00:25:21,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4819259037048147) internal successors, (19760), 13335 states have internal predecessors, (19760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19760 transitions. [2023-12-19 00:25:21,102 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19760 transitions. Word has length 73 [2023-12-19 00:25:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:21,102 INFO L495 AbstractCegarLoop]: Abstraction has 13336 states and 19760 transitions. [2023-12-19 00:25:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19760 transitions. [2023-12-19 00:25:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:25:21,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:21,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:21,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:25:21,104 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:21,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -256159023, now seen corresponding path program 1 times [2023-12-19 00:25:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416985333] [2023-12-19 00:25:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:21,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 00:25:21,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416985333] [2023-12-19 00:25:21,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416985333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:21,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:21,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:25:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831279922] [2023-12-19 00:25:21,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:21,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:25:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:25:21,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:25:21,201 INFO L87 Difference]: Start difference. First operand 13336 states and 19760 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:21,613 INFO L93 Difference]: Finished difference Result 26532 states and 38934 transitions. [2023-12-19 00:25:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:25:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-12-19 00:25:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:21,648 INFO L225 Difference]: With dead ends: 26532 [2023-12-19 00:25:21,648 INFO L226 Difference]: Without dead ends: 23730 [2023-12-19 00:25:21,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:25:21,661 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6341 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:21,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6341 Valid, 3577 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:25:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2023-12-19 00:25:22,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2023-12-19 00:25:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4736581133011033) internal successors, (23776), 16135 states have internal predecessors, (23776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23776 transitions. [2023-12-19 00:25:22,065 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23776 transitions. Word has length 73 [2023-12-19 00:25:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:22,065 INFO L495 AbstractCegarLoop]: Abstraction has 16136 states and 23776 transitions. [2023-12-19 00:25:22,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23776 transitions. [2023-12-19 00:25:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:25:22,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:22,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:22,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:25:22,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:22,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:22,067 INFO L85 PathProgramCache]: Analyzing trace with hash -559180335, now seen corresponding path program 1 times [2023-12-19 00:25:22,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:22,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074950684] [2023-12-19 00:25:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:22,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:25:22,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:22,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074950684] [2023-12-19 00:25:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074950684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:22,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:22,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:25:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310602068] [2023-12-19 00:25:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:22,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:25:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:25:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:25:22,163 INFO L87 Difference]: Start difference. First operand 16136 states and 23776 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:22,703 INFO L93 Difference]: Finished difference Result 29332 states and 42950 transitions. [2023-12-19 00:25:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:25:22,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:25:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:22,743 INFO L225 Difference]: With dead ends: 29332 [2023-12-19 00:25:22,743 INFO L226 Difference]: Without dead ends: 26530 [2023-12-19 00:25:22,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:25:22,755 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6293 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:22,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3665 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:25:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2023-12-19 00:25:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2023-12-19 00:25:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4678356395901553) internal successors, (27792), 18935 states have internal predecessors, (27792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27792 transitions. [2023-12-19 00:25:23,322 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27792 transitions. Word has length 73 [2023-12-19 00:25:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:23,322 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27792 transitions. [2023-12-19 00:25:23,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27792 transitions. [2023-12-19 00:25:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 00:25:23,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:23,324 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:25:23,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:25:23,325 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:23,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:23,325 INFO L85 PathProgramCache]: Analyzing trace with hash 745376689, now seen corresponding path program 1 times [2023-12-19 00:25:23,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:23,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105331721] [2023-12-19 00:25:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:23,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:23,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105331721] [2023-12-19 00:25:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105331721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:23,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:23,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:23,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913674000] [2023-12-19 00:25:23,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:23,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:23,405 INFO L87 Difference]: Start difference. First operand 18936 states and 27792 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:23,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:23,742 INFO L93 Difference]: Finished difference Result 36332 states and 52770 transitions. [2023-12-19 00:25:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-19 00:25:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:23,765 INFO L225 Difference]: With dead ends: 36332 [2023-12-19 00:25:23,765 INFO L226 Difference]: Without dead ends: 18938 [2023-12-19 00:25:23,783 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 [2023-12-19 00:25:23,784 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:23,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2023-12-19 00:25:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2023-12-19 00:25:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.452202387239886) internal successors, (27496), 18935 states have internal predecessors, (27496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27496 transitions. [2023-12-19 00:25:24,245 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27496 transitions. Word has length 74 [2023-12-19 00:25:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:24,245 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27496 transitions. [2023-12-19 00:25:24,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27496 transitions. [2023-12-19 00:25:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:25:24,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:24,248 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:25:24,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:25:24,248 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:24,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:24,248 INFO L85 PathProgramCache]: Analyzing trace with hash -645917351, now seen corresponding path program 1 times [2023-12-19 00:25:24,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:24,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765873587] [2023-12-19 00:25:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:24,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:24,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:24,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765873587] [2023-12-19 00:25:24,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765873587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:24,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:24,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671081886] [2023-12-19 00:25:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:24,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:24,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:24,354 INFO L87 Difference]: Start difference. First operand 18936 states and 27496 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:24,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:24,491 INFO L93 Difference]: Finished difference Result 25406 states and 36773 transitions. [2023-12-19 00:25:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:24,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-19 00:25:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:24,502 INFO L225 Difference]: With dead ends: 25406 [2023-12-19 00:25:24,503 INFO L226 Difference]: Without dead ends: 8012 [2023-12-19 00:25:24,516 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 [2023-12-19 00:25:24,517 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:24,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:24,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2023-12-19 00:25:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2023-12-19 00:25:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.4970636011495688) internal successors, (11981), 8004 states have internal predecessors, (11981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 11981 transitions. [2023-12-19 00:25:24,661 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 11981 transitions. Word has length 75 [2023-12-19 00:25:24,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:24,661 INFO L495 AbstractCegarLoop]: Abstraction has 8005 states and 11981 transitions. [2023-12-19 00:25:24,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 11981 transitions. [2023-12-19 00:25:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:25:24,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:24,664 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:25:24,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:25:24,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:24,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1298894671, now seen corresponding path program 1 times [2023-12-19 00:25:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:24,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73689510] [2023-12-19 00:25:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:24,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:24,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73689510] [2023-12-19 00:25:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73689510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:24,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:24,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:24,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269420455] [2023-12-19 00:25:24,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:24,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:25:24,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:24,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:25:24,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:25:24,806 INFO L87 Difference]: Start difference. First operand 8005 states and 11981 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:29,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:29,222 INFO L93 Difference]: Finished difference Result 11762 states and 18871 transitions. [2023-12-19 00:25:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:25:29,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-19 00:25:29,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:29,234 INFO L225 Difference]: With dead ends: 11762 [2023-12-19 00:25:29,234 INFO L226 Difference]: Without dead ends: 10258 [2023-12-19 00:25:29,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 00:25:29,236 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2362 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 5946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:29,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 812 Invalid, 5946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 00:25:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10258 states. [2023-12-19 00:25:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10258 to 10258. [2023-12-19 00:25:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10258 states, 10256 states have (on average 1.420631825273011) internal successors, (14570), 10257 states have internal predecessors, (14570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10258 states to 10258 states and 14570 transitions. [2023-12-19 00:25:29,401 INFO L78 Accepts]: Start accepts. Automaton has 10258 states and 14570 transitions. Word has length 75 [2023-12-19 00:25:29,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:29,402 INFO L495 AbstractCegarLoop]: Abstraction has 10258 states and 14570 transitions. [2023-12-19 00:25:29,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10258 states and 14570 transitions. [2023-12-19 00:25:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 00:25:29,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:29,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:29,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:25:29,403 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:29,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:29,403 INFO L85 PathProgramCache]: Analyzing trace with hash -735402369, now seen corresponding path program 1 times [2023-12-19 00:25:29,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:29,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484912130] [2023-12-19 00:25:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:29,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484912130] [2023-12-19 00:25:29,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484912130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:29,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:29,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:29,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507040440] [2023-12-19 00:25:29,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:29,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:29,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:29,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:29,465 INFO L87 Difference]: Start difference. First operand 10258 states and 14570 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:29,549 INFO L93 Difference]: Finished difference Result 13486 states and 19148 transitions. [2023-12-19 00:25:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:29,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-19 00:25:29,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:29,558 INFO L225 Difference]: With dead ends: 13486 [2023-12-19 00:25:29,558 INFO L226 Difference]: Without dead ends: 7036 [2023-12-19 00:25:29,564 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 [2023-12-19 00:25:29,565 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:29,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:29,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7036 states. [2023-12-19 00:25:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7036 to 7034. [2023-12-19 00:25:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7032 states have (on average 1.4138225255972696) internal successors, (9942), 7033 states have internal predecessors, (9942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 9942 transitions. [2023-12-19 00:25:29,668 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 9942 transitions. Word has length 76 [2023-12-19 00:25:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:29,669 INFO L495 AbstractCegarLoop]: Abstraction has 7034 states and 9942 transitions. [2023-12-19 00:25:29,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 9942 transitions. [2023-12-19 00:25:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 00:25:29,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:29,670 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:25:29,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 00:25:29,670 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:29,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1642786476, now seen corresponding path program 1 times [2023-12-19 00:25:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:29,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393578910] [2023-12-19 00:25:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 00:25:29,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:29,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393578910] [2023-12-19 00:25:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393578910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:29,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:29,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:25:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455663728] [2023-12-19 00:25:29,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:29,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:29,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:29,710 INFO L87 Difference]: Start difference. First operand 7034 states and 9942 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:32,134 INFO L93 Difference]: Finished difference Result 11542 states and 17325 transitions. [2023-12-19 00:25:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-19 00:25:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:32,146 INFO L225 Difference]: With dead ends: 11542 [2023-12-19 00:25:32,146 INFO L226 Difference]: Without dead ends: 8536 [2023-12-19 00:25:32,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:32,153 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 827 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:32,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 572 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 00:25:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8536 states. [2023-12-19 00:25:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8536 to 8536. [2023-12-19 00:25:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8536 states, 8534 states have (on average 1.3902038903210687) internal successors, (11864), 8535 states have internal predecessors, (11864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8536 states to 8536 states and 11864 transitions. [2023-12-19 00:25:32,269 INFO L78 Accepts]: Start accepts. Automaton has 8536 states and 11864 transitions. Word has length 77 [2023-12-19 00:25:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:32,270 INFO L495 AbstractCegarLoop]: Abstraction has 8536 states and 11864 transitions. [2023-12-19 00:25:32,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8536 states and 11864 transitions. [2023-12-19 00:25:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 00:25:32,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:32,271 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] [2023-12-19 00:25:32,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 00:25:32,271 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:32,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1365644595, now seen corresponding path program 1 times [2023-12-19 00:25:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:32,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970456748] [2023-12-19 00:25:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:32,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:32,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970456748] [2023-12-19 00:25:32,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970456748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:32,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:32,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:32,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704847248] [2023-12-19 00:25:32,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:32,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:32,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:32,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:32,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:32,327 INFO L87 Difference]: Start difference. First operand 8536 states and 11864 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:32,380 INFO L93 Difference]: Finished difference Result 10152 states and 14128 transitions. [2023-12-19 00:25:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:32,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 00:25:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:32,388 INFO L225 Difference]: With dead ends: 10152 [2023-12-19 00:25:32,388 INFO L226 Difference]: Without dead ends: 6926 [2023-12-19 00:25:32,391 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 [2023-12-19 00:25:32,392 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:32,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2023-12-19 00:25:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6924. [2023-12-19 00:25:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6924 states, 6922 states have (on average 1.3834151979196765) internal successors, (9576), 6923 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6924 states to 6924 states and 9576 transitions. [2023-12-19 00:25:32,472 INFO L78 Accepts]: Start accepts. Automaton has 6924 states and 9576 transitions. Word has length 78 [2023-12-19 00:25:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:32,472 INFO L495 AbstractCegarLoop]: Abstraction has 6924 states and 9576 transitions. [2023-12-19 00:25:32,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6924 states and 9576 transitions. [2023-12-19 00:25:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 00:25:32,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:32,473 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] [2023-12-19 00:25:32,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 00:25:32,473 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:32,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1191429989, now seen corresponding path program 1 times [2023-12-19 00:25:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923607563] [2023-12-19 00:25:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:32,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923607563] [2023-12-19 00:25:32,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923607563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:25:32,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:25:32,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:25:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31443553] [2023-12-19 00:25:32,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:25:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:25:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:32,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:25:32,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:25:32,530 INFO L87 Difference]: Start difference. First operand 6924 states and 9576 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:32,595 INFO L93 Difference]: Finished difference Result 7734 states and 10696 transitions. [2023-12-19 00:25:32,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:25:32,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-19 00:25:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:32,601 INFO L225 Difference]: With dead ends: 7734 [2023-12-19 00:25:32,601 INFO L226 Difference]: Without dead ends: 6120 [2023-12-19 00:25:32,602 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 [2023-12-19 00:25:32,602 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:32,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6120 states. [2023-12-19 00:25:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6120 to 6118. [2023-12-19 00:25:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 6116 states have (on average 1.38080444735121) internal successors, (8445), 6117 states have internal predecessors, (8445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 8445 transitions. [2023-12-19 00:25:32,661 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 8445 transitions. Word has length 80 [2023-12-19 00:25:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:32,661 INFO L495 AbstractCegarLoop]: Abstraction has 6118 states and 8445 transitions. [2023-12-19 00:25:32,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 8445 transitions. [2023-12-19 00:25:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 00:25:32,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:32,662 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:25:32,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 00:25:32,663 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:32,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:32,663 INFO L85 PathProgramCache]: Analyzing trace with hash 740978665, now seen corresponding path program 1 times [2023-12-19 00:25:32,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849529869] [2023-12-19 00:25:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:25:32,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:32,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849529869] [2023-12-19 00:25:32,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849529869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:25:32,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198403043] [2023-12-19 00:25:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:32,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:25:32,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:25:32,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:25:32,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:25:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:32,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 00:25:32,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:25:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:25:32,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:25:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:25:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198403043] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:25:33,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:25:33,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-12-19 00:25:33,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934247726] [2023-12-19 00:25:33,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:25:33,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 00:25:33,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:33,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 00:25:33,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:25:33,212 INFO L87 Difference]: Start difference. First operand 6118 states and 8445 transitions. Second operand has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:33,366 INFO L93 Difference]: Finished difference Result 8779 states and 12025 transitions. [2023-12-19 00:25:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:25:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-19 00:25:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:33,374 INFO L225 Difference]: With dead ends: 8779 [2023-12-19 00:25:33,374 INFO L226 Difference]: Without dead ends: 7971 [2023-12-19 00:25:33,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-12-19 00:25:33,380 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1674 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 4814 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:33,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 4814 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:25:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7971 states. [2023-12-19 00:25:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7971 to 7902. [2023-12-19 00:25:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7902 states, 7900 states have (on average 1.358607594936709) internal successors, (10733), 7901 states have internal predecessors, (10733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 10733 transitions. [2023-12-19 00:25:33,505 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 10733 transitions. Word has length 82 [2023-12-19 00:25:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:33,505 INFO L495 AbstractCegarLoop]: Abstraction has 7902 states and 10733 transitions. [2023-12-19 00:25:33,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 10733 transitions. [2023-12-19 00:25:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 00:25:33,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:33,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:33,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 00:25:33,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 00:25:33,711 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:33,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash -723250321, now seen corresponding path program 1 times [2023-12-19 00:25:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:33,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789813604] [2023-12-19 00:25:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789813604] [2023-12-19 00:25:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789813604] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:25:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493069575] [2023-12-19 00:25:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:34,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:25:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:25:34,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:25:34,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:25:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:34,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:25:34,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:25:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:34,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:25:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:35,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493069575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:25:35,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:25:35,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2023-12-19 00:25:35,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755201465] [2023-12-19 00:25:35,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:25:35,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:25:35,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:35,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:25:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:25:35,862 INFO L87 Difference]: Start difference. First operand 7902 states and 10733 transitions. Second operand has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:38,436 INFO L93 Difference]: Finished difference Result 18925 states and 24889 transitions. [2023-12-19 00:25:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 00:25:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 83 [2023-12-19 00:25:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:38,454 INFO L225 Difference]: With dead ends: 18925 [2023-12-19 00:25:38,454 INFO L226 Difference]: Without dead ends: 16428 [2023-12-19 00:25:38,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=911, Invalid=3781, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 00:25:38,461 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 13913 mSDsluCounter, 6548 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13913 SdHoareTripleChecker+Valid, 8046 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:38,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13913 Valid, 8046 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:25:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16428 states. [2023-12-19 00:25:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16428 to 15578. [2023-12-19 00:25:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15578 states, 15576 states have (on average 1.3240241397021058) internal successors, (20623), 15577 states have internal predecessors, (20623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15578 states to 15578 states and 20623 transitions. [2023-12-19 00:25:38,800 INFO L78 Accepts]: Start accepts. Automaton has 15578 states and 20623 transitions. Word has length 83 [2023-12-19 00:25:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:38,800 INFO L495 AbstractCegarLoop]: Abstraction has 15578 states and 20623 transitions. [2023-12-19 00:25:38,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:38,800 INFO L276 IsEmpty]: Start isEmpty. Operand 15578 states and 20623 transitions. [2023-12-19 00:25:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 00:25:38,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:38,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:38,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 00:25:39,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 00:25:39,007 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:39,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1672994961, now seen corresponding path program 1 times [2023-12-19 00:25:39,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:39,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752464009] [2023-12-19 00:25:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:39,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:39,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:39,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752464009] [2023-12-19 00:25:39,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752464009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:25:39,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154012850] [2023-12-19 00:25:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:39,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:25:39,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:25:39,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:25:39,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:25:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:39,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:25:39,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:25:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:39,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:25:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154012850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:25:40,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:25:40,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 00:25:40,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520768374] [2023-12-19 00:25:40,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:25:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 00:25:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 00:25:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-12-19 00:25:40,524 INFO L87 Difference]: Start difference. First operand 15578 states and 20623 transitions. Second operand has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:41,415 INFO L93 Difference]: Finished difference Result 26546 states and 34696 transitions. [2023-12-19 00:25:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 00:25:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-12-19 00:25:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:41,430 INFO L225 Difference]: With dead ends: 26546 [2023-12-19 00:25:41,430 INFO L226 Difference]: Without dead ends: 16716 [2023-12-19 00:25:41,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 00:25:41,438 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 16556 mSDsluCounter, 7774 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16556 SdHoareTripleChecker+Valid, 9284 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:41,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16556 Valid, 9284 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:25:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16716 states. [2023-12-19 00:25:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16716 to 15356. [2023-12-19 00:25:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15356 states, 15354 states have (on average 1.316008857626677) internal successors, (20206), 15355 states have internal predecessors, (20206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 20206 transitions. [2023-12-19 00:25:41,760 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 20206 transitions. Word has length 83 [2023-12-19 00:25:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:41,760 INFO L495 AbstractCegarLoop]: Abstraction has 15356 states and 20206 transitions. [2023-12-19 00:25:41,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:41,760 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 20206 transitions. [2023-12-19 00:25:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 00:25:41,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:41,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:41,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 00:25:41,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:25:41,982 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:41,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1143712879, now seen corresponding path program 1 times [2023-12-19 00:25:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336554020] [2023-12-19 00:25:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336554020] [2023-12-19 00:25:42,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336554020] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:25:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883846415] [2023-12-19 00:25:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:42,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:25:42,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:25:42,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:25:42,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:25:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:42,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:25:42,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:25:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:42,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:25:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883846415] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:25:43,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:25:43,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 00:25:43,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008325976] [2023-12-19 00:25:43,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:25:43,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 00:25:43,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:43,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 00:25:43,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-19 00:25:43,420 INFO L87 Difference]: Start difference. First operand 15356 states and 20206 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:44,495 INFO L93 Difference]: Finished difference Result 35899 states and 46468 transitions. [2023-12-19 00:25:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 00:25:44,496 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 83 [2023-12-19 00:25:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:44,522 INFO L225 Difference]: With dead ends: 35899 [2023-12-19 00:25:44,523 INFO L226 Difference]: Without dead ends: 27026 [2023-12-19 00:25:44,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 00:25:44,582 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 10723 mSDsluCounter, 8070 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10723 SdHoareTripleChecker+Valid, 9599 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:44,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10723 Valid, 9599 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:25:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27026 states. [2023-12-19 00:25:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27026 to 25686. [2023-12-19 00:25:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25686 states, 25684 states have (on average 1.2903363961999688) internal successors, (33141), 25685 states have internal predecessors, (33141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:45,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25686 states to 25686 states and 33141 transitions. [2023-12-19 00:25:45,188 INFO L78 Accepts]: Start accepts. Automaton has 25686 states and 33141 transitions. Word has length 83 [2023-12-19 00:25:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:45,188 INFO L495 AbstractCegarLoop]: Abstraction has 25686 states and 33141 transitions. [2023-12-19 00:25:45,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 25686 states and 33141 transitions. [2023-12-19 00:25:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 00:25:45,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:45,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:45,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 00:25:45,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 00:25:45,393 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:45,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:45,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2014021063, now seen corresponding path program 1 times [2023-12-19 00:25:45,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:45,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587186149] [2023-12-19 00:25:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:45,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:45,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587186149] [2023-12-19 00:25:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587186149] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:25:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928156131] [2023-12-19 00:25:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:45,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:25:45,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:25:45,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:25:45,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:25:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:45,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:25:45,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:25:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:46,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:25:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:47,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928156131] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:25:47,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:25:47,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-19 00:25:47,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534664570] [2023-12-19 00:25:47,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:25:47,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:25:47,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:25:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:25:47,046 INFO L87 Difference]: Start difference. First operand 25686 states and 33141 transitions. Second operand has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:50,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:50,381 INFO L93 Difference]: Finished difference Result 86148 states and 109297 transitions. [2023-12-19 00:25:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 00:25:50,381 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 84 [2023-12-19 00:25:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:50,448 INFO L225 Difference]: With dead ends: 86148 [2023-12-19 00:25:50,448 INFO L226 Difference]: Without dead ends: 66437 [2023-12-19 00:25:50,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2023-12-19 00:25:50,470 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 24472 mSDsluCounter, 9552 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24472 SdHoareTripleChecker+Valid, 11062 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:50,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24472 Valid, 11062 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:25:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66437 states. [2023-12-19 00:25:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66437 to 63125. [2023-12-19 00:25:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63125 states, 63123 states have (on average 1.2545031129699158) internal successors, (79188), 63124 states have internal predecessors, (79188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63125 states to 63125 states and 79188 transitions. [2023-12-19 00:25:52,493 INFO L78 Accepts]: Start accepts. Automaton has 63125 states and 79188 transitions. Word has length 84 [2023-12-19 00:25:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:25:52,493 INFO L495 AbstractCegarLoop]: Abstraction has 63125 states and 79188 transitions. [2023-12-19 00:25:52,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 63125 states and 79188 transitions. [2023-12-19 00:25:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:25:52,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:25:52,495 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:25:52,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 00:25:52,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:25:52,702 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:25:52,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:25:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1488453115, now seen corresponding path program 1 times [2023-12-19 00:25:52,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:25:52,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150770001] [2023-12-19 00:25:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:25:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:55,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:25:55,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150770001] [2023-12-19 00:25:55,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150770001] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:25:55,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169342942] [2023-12-19 00:25:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:25:55,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:25:55,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:25:55,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:25:55,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:25:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:25:55,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:25:55,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:25:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:56,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:25:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:25:56,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169342942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:25:56,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:25:56,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 11, 11] total 50 [2023-12-19 00:25:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265871107] [2023-12-19 00:25:56,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:25:56,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-19 00:25:56,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:25:56,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-19 00:25:56,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 00:25:56,758 INFO L87 Difference]: Start difference. First operand 63125 states and 79188 transitions. Second operand has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:26:34,416 INFO L93 Difference]: Finished difference Result 111096 states and 137446 transitions. [2023-12-19 00:26:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2023-12-19 00:26:34,417 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 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 86 [2023-12-19 00:26:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:26:34,518 INFO L225 Difference]: With dead ends: 111096 [2023-12-19 00:26:34,518 INFO L226 Difference]: Without dead ends: 92431 [2023-12-19 00:26:34,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31524 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=12603, Invalid=67769, Unknown=0, NotChecked=0, Total=80372 [2023-12-19 00:26:34,549 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 27729 mSDsluCounter, 35727 mSDsCounter, 0 mSdLazyCounter, 9550 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27729 SdHoareTripleChecker+Valid, 37440 SdHoareTripleChecker+Invalid, 9712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 9550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:26:34,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27729 Valid, 37440 Invalid, 9712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [162 Valid, 9550 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-19 00:26:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92431 states. [2023-12-19 00:26:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92431 to 61877. [2023-12-19 00:26:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61877 states, 61875 states have (on average 1.251781818181818) internal successors, (77454), 61876 states have internal predecessors, (77454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61877 states to 61877 states and 77454 transitions. [2023-12-19 00:26:37,278 INFO L78 Accepts]: Start accepts. Automaton has 61877 states and 77454 transitions. Word has length 86 [2023-12-19 00:26:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:26:37,279 INFO L495 AbstractCegarLoop]: Abstraction has 61877 states and 77454 transitions. [2023-12-19 00:26:37,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 61877 states and 77454 transitions. [2023-12-19 00:26:37,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:26:37,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:26:37,280 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:26:37,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 00:26:37,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 00:26:37,486 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:26:37,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:26:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash 101314427, now seen corresponding path program 1 times [2023-12-19 00:26:37,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:26:37,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600699184] [2023-12-19 00:26:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:26:37,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:26:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:26:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:38,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:26:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600699184] [2023-12-19 00:26:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600699184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:26:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432672841] [2023-12-19 00:26:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:26:38,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:26:38,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:26:38,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:26:38,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:26:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:26:38,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-19 00:26:38,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:26:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:40,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:26:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:42,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432672841] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:26:42,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:26:42,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 23] total 53 [2023-12-19 00:26:42,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987501335] [2023-12-19 00:26:42,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:26:42,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:26:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:26:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:26:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2424, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:26:42,975 INFO L87 Difference]: Start difference. First operand 61877 states and 77454 transitions. Second operand has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:27:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:27:56,176 INFO L93 Difference]: Finished difference Result 304269 states and 378460 transitions. [2023-12-19 00:27:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-12-19 00:27:56,180 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 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 86 [2023-12-19 00:27:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:27:56,621 INFO L225 Difference]: With dead ends: 304269 [2023-12-19 00:27:56,621 INFO L226 Difference]: Without dead ends: 274994 [2023-12-19 00:27:56,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53519 ImplicationChecksByTransitivity, 59.7s TimeCoverageRelationStatistics Valid=19156, Invalid=102994, Unknown=0, NotChecked=0, Total=122150 [2023-12-19 00:27:56,658 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 19616 mSDsluCounter, 27372 mSDsCounter, 0 mSdLazyCounter, 5778 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19616 SdHoareTripleChecker+Valid, 28956 SdHoareTripleChecker+Invalid, 5925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 5778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:27:56,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19616 Valid, 28956 Invalid, 5925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [147 Valid, 5778 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-19 00:27:56,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274994 states. [2023-12-19 00:28:00,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274994 to 60428. [2023-12-19 00:28:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60428 states, 60426 states have (on average 1.2512991096547843) internal successors, (75611), 60427 states have internal predecessors, (75611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60428 states to 60428 states and 75611 transitions. [2023-12-19 00:28:00,610 INFO L78 Accepts]: Start accepts. Automaton has 60428 states and 75611 transitions. Word has length 86 [2023-12-19 00:28:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:28:00,610 INFO L495 AbstractCegarLoop]: Abstraction has 60428 states and 75611 transitions. [2023-12-19 00:28:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 60428 states and 75611 transitions. [2023-12-19 00:28:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 00:28:00,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:28:00,611 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:28:00,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 00:28:00,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:28:00,820 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:28:00,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:28:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1850457015, now seen corresponding path program 1 times [2023-12-19 00:28:00,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:28:00,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570385763] [2023-12-19 00:28:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:00,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:28:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:01,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:28:01,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570385763] [2023-12-19 00:28:01,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570385763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:28:01,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603610630] [2023-12-19 00:28:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:01,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:28:01,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:28:01,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:28:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:28:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:01,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 00:28:01,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:28:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:01,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:28:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:02,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603610630] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:28:02,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:28:02,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 35 [2023-12-19 00:28:02,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466138163] [2023-12-19 00:28:02,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:28:02,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 00:28:02,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:28:02,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 00:28:02,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 00:28:02,849 INFO L87 Difference]: Start difference. First operand 60428 states and 75611 transitions. Second operand has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:28:10,989 INFO L93 Difference]: Finished difference Result 113374 states and 141105 transitions. [2023-12-19 00:28:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-19 00:28:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 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 87 [2023-12-19 00:28:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:28:11,073 INFO L225 Difference]: With dead ends: 113374 [2023-12-19 00:28:11,073 INFO L226 Difference]: Without dead ends: 80861 [2023-12-19 00:28:11,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1873, Invalid=6137, Unknown=0, NotChecked=0, Total=8010 [2023-12-19 00:28:11,093 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 10727 mSDsluCounter, 21524 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10727 SdHoareTripleChecker+Valid, 23058 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:28:11,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10727 Valid, 23058 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:28:11,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80861 states. [2023-12-19 00:28:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80861 to 77624. [2023-12-19 00:28:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77624 states, 77622 states have (on average 1.2419159516631884) internal successors, (96400), 77623 states have internal predecessors, (96400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77624 states to 77624 states and 96400 transitions. [2023-12-19 00:28:15,265 INFO L78 Accepts]: Start accepts. Automaton has 77624 states and 96400 transitions. Word has length 87 [2023-12-19 00:28:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:28:15,265 INFO L495 AbstractCegarLoop]: Abstraction has 77624 states and 96400 transitions. [2023-12-19 00:28:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 77624 states and 96400 transitions. [2023-12-19 00:28:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 00:28:15,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:28:15,274 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:28:15,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 00:28:15,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-19 00:28:15,478 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:28:15,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:28:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash 105166065, now seen corresponding path program 1 times [2023-12-19 00:28:15,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:28:15,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135360191] [2023-12-19 00:28:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:28:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:16,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:28:16,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135360191] [2023-12-19 00:28:16,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135360191] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:28:16,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316319355] [2023-12-19 00:28:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:16,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:28:16,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:28:16,018 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:28:16,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:28:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:16,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:28:16,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:28:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 32 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:16,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:28:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:18,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316319355] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:28:18,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:28:18,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-19 00:28:18,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558211922] [2023-12-19 00:28:18,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:28:18,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:28:18,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:28:18,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:28:18,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:28:18,394 INFO L87 Difference]: Start difference. First operand 77624 states and 96400 transitions. Second operand has 32 states, 32 states have (on average 10.34375) internal successors, (331), 31 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:28:23,796 INFO L93 Difference]: Finished difference Result 121755 states and 151230 transitions. [2023-12-19 00:28:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 00:28:23,797 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.34375) internal successors, (331), 31 states have internal predecessors, (331), 0 states have call successors, (0), 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 134 [2023-12-19 00:28:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:28:23,892 INFO L225 Difference]: With dead ends: 121755 [2023-12-19 00:28:23,893 INFO L226 Difference]: Without dead ends: 86826 [2023-12-19 00:28:23,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1080, Invalid=3750, Unknown=0, NotChecked=0, Total=4830 [2023-12-19 00:28:23,918 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 18768 mSDsluCounter, 15761 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18768 SdHoareTripleChecker+Valid, 17333 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:28:23,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18768 Valid, 17333 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:28:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86826 states. [2023-12-19 00:28:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86826 to 77624. [2023-12-19 00:28:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77624 states, 77622 states have (on average 1.2342634820025251) internal successors, (95806), 77623 states have internal predecessors, (95806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77624 states to 77624 states and 95806 transitions. [2023-12-19 00:28:28,238 INFO L78 Accepts]: Start accepts. Automaton has 77624 states and 95806 transitions. Word has length 134 [2023-12-19 00:28:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:28:28,238 INFO L495 AbstractCegarLoop]: Abstraction has 77624 states and 95806 transitions. [2023-12-19 00:28:28,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.34375) internal successors, (331), 31 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 77624 states and 95806 transitions. [2023-12-19 00:28:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 00:28:28,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:28:28,245 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:28:28,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 00:28:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:28:28,450 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:28:28,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:28:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1132003825, now seen corresponding path program 1 times [2023-12-19 00:28:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:28:28,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807936008] [2023-12-19 00:28:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:28:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 47 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:29,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:28:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807936008] [2023-12-19 00:28:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807936008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:28:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358881049] [2023-12-19 00:28:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:29,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:28:29,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:28:29,045 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:28:29,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:28:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:29,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:28:29,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:28:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:29,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:28:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 39 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:31,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358881049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:28:31,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:28:31,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-19 00:28:31,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307416249] [2023-12-19 00:28:31,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:28:31,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 00:28:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:28:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 00:28:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 00:28:31,735 INFO L87 Difference]: Start difference. First operand 77624 states and 95806 transitions. Second operand has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 35 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:28:46,315 INFO L93 Difference]: Finished difference Result 176937 states and 216905 transitions. [2023-12-19 00:28:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-19 00:28:46,316 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 35 states have internal predecessors, (357), 0 states have call successors, (0), 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 134 [2023-12-19 00:28:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:28:46,437 INFO L225 Difference]: With dead ends: 176937 [2023-12-19 00:28:46,437 INFO L226 Difference]: Without dead ends: 119567 [2023-12-19 00:28:46,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9386 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=4305, Invalid=24425, Unknown=0, NotChecked=0, Total=28730 [2023-12-19 00:28:46,458 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 24247 mSDsluCounter, 15017 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24247 SdHoareTripleChecker+Valid, 16579 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:28:46,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24247 Valid, 16579 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 00:28:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119567 states. [2023-12-19 00:28:52,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119567 to 98928. [2023-12-19 00:28:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98928 states, 98926 states have (on average 1.2212360754503366) internal successors, (120812), 98927 states have internal predecessors, (120812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:52,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98928 states to 98928 states and 120812 transitions. [2023-12-19 00:28:52,440 INFO L78 Accepts]: Start accepts. Automaton has 98928 states and 120812 transitions. Word has length 134 [2023-12-19 00:28:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:28:52,440 INFO L495 AbstractCegarLoop]: Abstraction has 98928 states and 120812 transitions. [2023-12-19 00:28:52,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 35 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 98928 states and 120812 transitions. [2023-12-19 00:28:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 00:28:52,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:28:52,447 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:28:52,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 00:28:52,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 00:28:52,647 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:28:52,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:28:52,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1868993537, now seen corresponding path program 1 times [2023-12-19 00:28:52,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:28:52,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855685101] [2023-12-19 00:28:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:52,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:28:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:53,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:28:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855685101] [2023-12-19 00:28:53,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855685101] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:28:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516396868] [2023-12-19 00:28:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:53,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:28:53,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:28:53,120 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:28:53,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:28:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:53,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 00:28:53,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:28:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:54,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:28:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:56,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516396868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:28:56,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:28:56,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 19] total 48 [2023-12-19 00:28:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781948331] [2023-12-19 00:28:56,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:28:56,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-19 00:28:56,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:28:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-19 00:28:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2023-12-19 00:28:56,871 INFO L87 Difference]: Start difference. First operand 98928 states and 120812 transitions. Second operand has 48 states, 48 states have (on average 7.916666666666667) internal successors, (380), 48 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:29:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:29:22,957 INFO L93 Difference]: Finished difference Result 205296 states and 251298 transitions. [2023-12-19 00:29:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-19 00:29:22,957 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.916666666666667) internal successors, (380), 48 states have internal predecessors, (380), 0 states have call successors, (0), 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 136 [2023-12-19 00:29:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:29:23,121 INFO L225 Difference]: With dead ends: 205296 [2023-12-19 00:29:23,122 INFO L226 Difference]: Without dead ends: 163764 [2023-12-19 00:29:23,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12059 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=5331, Invalid=32499, Unknown=0, NotChecked=0, Total=37830 [2023-12-19 00:29:23,149 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 29553 mSDsluCounter, 25771 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29553 SdHoareTripleChecker+Valid, 27379 SdHoareTripleChecker+Invalid, 3495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:29:23,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29553 Valid, 27379 Invalid, 3495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [159 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 00:29:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163764 states. [2023-12-19 00:29:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163764 to 117907. [2023-12-19 00:29:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117907 states, 117905 states have (on average 1.2084644417115473) internal successors, (142484), 117906 states have internal predecessors, (142484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:29:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117907 states to 117907 states and 142484 transitions. [2023-12-19 00:29:30,815 INFO L78 Accepts]: Start accepts. Automaton has 117907 states and 142484 transitions. Word has length 136 [2023-12-19 00:29:30,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:29:30,816 INFO L495 AbstractCegarLoop]: Abstraction has 117907 states and 142484 transitions. [2023-12-19 00:29:30,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.916666666666667) internal successors, (380), 48 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:29:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 117907 states and 142484 transitions. [2023-12-19 00:29:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 00:29:30,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:29:30,823 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:29:30,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 00:29:31,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-19 00:29:31,024 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:29:31,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:29:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1863811179, now seen corresponding path program 1 times [2023-12-19 00:29:31,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:29:31,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930477405] [2023-12-19 00:29:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:29:31,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:29:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:29:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:29:33,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:29:33,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930477405] [2023-12-19 00:29:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930477405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:29:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233154832] [2023-12-19 00:29:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:29:33,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:29:33,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:29:33,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:29:33,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:29:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:29:33,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-19 00:29:33,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:29:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:29:35,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:29:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:29:38,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233154832] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:29:38,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:29:38,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 20, 19] total 68 [2023-12-19 00:29:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110705728] [2023-12-19 00:29:38,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:29:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-19 00:29:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:29:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-19 00:29:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4302, Unknown=0, NotChecked=0, Total=4556 [2023-12-19 00:29:38,705 INFO L87 Difference]: Start difference. First operand 117907 states and 142484 transitions. Second operand has 68 states, 68 states have (on average 5.764705882352941) internal successors, (392), 68 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:36:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:36:44,363 INFO L93 Difference]: Finished difference Result 428362 states and 512318 transitions. [2023-12-19 00:36:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1027 states. [2023-12-19 00:36:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 5.764705882352941) internal successors, (392), 68 states have internal predecessors, (392), 0 states have call successors, (0), 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 137 [2023-12-19 00:36:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:36:45,032 INFO L225 Difference]: With dead ends: 428362 [2023-12-19 00:36:45,032 INFO L226 Difference]: Without dead ends: 371389 [2023-12-19 00:36:45,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1090 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591065 ImplicationChecksByTransitivity, 367.1s TimeCoverageRelationStatistics Valid=123820, Invalid=1067552, Unknown=0, NotChecked=0, Total=1191372 [2023-12-19 00:36:45,160 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 42698 mSDsluCounter, 54515 mSDsCounter, 0 mSdLazyCounter, 26186 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42698 SdHoareTripleChecker+Valid, 56426 SdHoareTripleChecker+Invalid, 26792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 26186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:36:45,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42698 Valid, 56426 Invalid, 26792 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [606 Valid, 26186 Invalid, 0 Unknown, 0 Unchecked, 28.5s Time] [2023-12-19 00:36:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371389 states. [2023-12-19 00:36:59,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371389 to 137629. [2023-12-19 00:36:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137629 states, 137627 states have (on average 1.1959353905846963) internal successors, (164593), 137628 states have internal predecessors, (164593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:37:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137629 states to 137629 states and 164593 transitions. [2023-12-19 00:37:00,363 INFO L78 Accepts]: Start accepts. Automaton has 137629 states and 164593 transitions. Word has length 137 [2023-12-19 00:37:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:37:00,364 INFO L495 AbstractCegarLoop]: Abstraction has 137629 states and 164593 transitions. [2023-12-19 00:37:00,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 5.764705882352941) internal successors, (392), 68 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:37:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 137629 states and 164593 transitions. [2023-12-19 00:37:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 00:37:00,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:37:00,373 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:37:00,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 00:37:00,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 00:37:00,578 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:37:00,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:37:00,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1466738909, now seen corresponding path program 1 times [2023-12-19 00:37:00,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:37:00,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28285859] [2023-12-19 00:37:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:37:00,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:37:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:37:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:37:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:37:02,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28285859] [2023-12-19 00:37:02,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28285859] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:37:02,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713248937] [2023-12-19 00:37:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:37:02,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:37:02,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:37:02,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:37:02,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 00:37:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:37:02,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 00:37:02,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:37:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:37:04,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:37:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:37:06,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713248937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:37:06,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:37:06,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 17] total 57 [2023-12-19 00:37:06,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915815354] [2023-12-19 00:37:06,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:37:06,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 00:37:06,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:37:06,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 00:37:06,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2936, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 00:37:06,834 INFO L87 Difference]: Start difference. First operand 137629 states and 164593 transitions. Second operand has 57 states, 57 states have (on average 6.2631578947368425) internal successors, (357), 57 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:38:24,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:38:24,665 INFO L93 Difference]: Finished difference Result 395333 states and 469021 transitions. [2023-12-19 00:38:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2023-12-19 00:38:24,666 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 6.2631578947368425) internal successors, (357), 57 states have internal predecessors, (357), 0 states have call successors, (0), 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 137 [2023-12-19 00:38:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:38:25,192 INFO L225 Difference]: With dead ends: 395333 [2023-12-19 00:38:25,193 INFO L226 Difference]: Without dead ends: 343167 [2023-12-19 00:38:25,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26816 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=9970, Invalid=66482, Unknown=0, NotChecked=0, Total=76452 [2023-12-19 00:38:25,424 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 22923 mSDsluCounter, 46611 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22923 SdHoareTripleChecker+Valid, 48296 SdHoareTripleChecker+Invalid, 5784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:38:25,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22923 Valid, 48296 Invalid, 5784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 5363 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-19 00:38:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343167 states. Received shutdown request... [2023-12-19 00:38:47,133 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:38:47,133 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:38:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343167 to 225577. [2023-12-19 00:38:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225577 states, 225575 states have (on average 1.1937936384794414) internal successors, (269290), 225576 states have internal predecessors, (269290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:38:47,835 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:38:47,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 00:38:48,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 00:38:48,043 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-19 00:38:48,044 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:38:48,047 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:38:48,048 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:38:48,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:38:48 BoogieIcfgContainer [2023-12-19 00:38:48,049 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:38:48,049 INFO L158 Benchmark]: Toolchain (without parser) took 820057.45ms. Allocated memory was 327.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 268.6MB in the beginning and 3.0GB in the end (delta: -2.7GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-12-19 00:38:48,050 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 226.5MB. Free memory was 176.5MB in the beginning and 176.4MB in the end (delta: 164.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:38:48,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1284.43ms. Allocated memory is still 327.2MB. Free memory was 268.3MB in the beginning and 260.2MB in the end (delta: 8.1MB). Peak memory consumption was 135.5MB. Max. memory is 8.0GB. [2023-12-19 00:38:48,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 300.90ms. Allocated memory is still 327.2MB. Free memory was 260.2MB in the beginning and 226.3MB in the end (delta: 33.9MB). Peak memory consumption was 112.6MB. Max. memory is 8.0GB. [2023-12-19 00:38:48,050 INFO L158 Benchmark]: Boogie Preprocessor took 351.97ms. Allocated memory was 327.2MB in the beginning and 609.2MB in the end (delta: 282.1MB). Free memory was 226.3MB in the beginning and 477.9MB in the end (delta: -251.7MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-12-19 00:38:48,050 INFO L158 Benchmark]: RCFGBuilder took 3128.18ms. Allocated memory was 609.2MB in the beginning and 945.8MB in the end (delta: 336.6MB). Free memory was 477.9MB in the beginning and 615.3MB in the end (delta: -137.4MB). Peak memory consumption was 200.3MB. Max. memory is 8.0GB. [2023-12-19 00:38:48,050 INFO L158 Benchmark]: TraceAbstraction took 814985.75ms. Allocated memory was 945.8MB in the beginning and 4.9GB in the end (delta: 4.0GB). Free memory was 614.3MB in the beginning and 3.0GB in the end (delta: -2.4GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-19 00:38:48,051 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 226.5MB. Free memory was 176.5MB in the beginning and 176.4MB in the end (delta: 164.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1284.43ms. Allocated memory is still 327.2MB. Free memory was 268.3MB in the beginning and 260.2MB in the end (delta: 8.1MB). Peak memory consumption was 135.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 300.90ms. Allocated memory is still 327.2MB. Free memory was 260.2MB in the beginning and 226.3MB in the end (delta: 33.9MB). Peak memory consumption was 112.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 351.97ms. Allocated memory was 327.2MB in the beginning and 609.2MB in the end (delta: 282.1MB). Free memory was 226.3MB in the beginning and 477.9MB in the end (delta: -251.7MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * RCFGBuilder took 3128.18ms. Allocated memory was 609.2MB in the beginning and 945.8MB in the end (delta: 336.6MB). Free memory was 477.9MB in the beginning and 615.3MB in the end (delta: -137.4MB). Peak memory consumption was 200.3MB. Max. memory is 8.0GB. * TraceAbstraction took 814985.75ms. Allocated memory was 945.8MB in the beginning and 4.9GB in the end (delta: 4.0GB). Free memory was 614.3MB in the beginning and 3.0GB in the end (delta: -2.4GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 435]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 435). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 471]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 471). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 834 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 814.9s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 693.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 318001 SdHoareTripleChecker+Valid, 58.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 318001 mSDsluCounter, 356883 SdHoareTripleChecker+Invalid, 52.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 303131 mSDsCounter, 4384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69848 IncrementalHoareTripleChecker+Invalid, 74232 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4384 mSolverCounterUnsat, 53752 mSDtfsCounter, 69848 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5279 GetRequests, 2458 SyntacticMatches, 1 SemanticMatches, 2820 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730133 ImplicationChecksByTransitivity, 534.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137629occurred in iteration=35, InterpolantAutomatonStates: 2398, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 73.4s AutomataMinimizationTime, 36 MinimizatonAttempts, 604885 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 42.9s InterpolantComputationTime, 4117 NumberOfCodeBlocks, 4117 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 5407 ConstructedInterpolants, 0 QuantifiedInterpolants, 98024 SizeOfPredicates, 98 NumberOfNonLiveVariables, 6422 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 62 InterpolantComputations, 23 PerfectInterpolantSequences, 852/2142 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown