/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:29:38,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:29:38,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:29:38,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:29:38,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:29:38,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:29:38,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:29:38,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:29:38,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:29:38,983 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:29:38,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:29:38,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:29:38,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:29:38,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:29:38,987 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:29:38,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:29:38,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:29:38,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:29:38,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:29:38,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:29:38,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:29:38,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:29:38,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:29:38,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:29:38,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:29:38,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:29:38,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:29:38,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:29:38,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:29:38,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:29:38,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:29:38,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:29:38,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:29:39,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:29:39,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:29:39,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:29:39,204 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:29:39,204 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:29:39,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2023-12-16 19:29:40,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:29:40,373 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:29:40,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2023-12-16 19:29:40,380 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb81923e/5ce80248830946c4be3ba1cff4a11e09/FLAGebe73c049 [2023-12-16 19:29:40,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb81923e/5ce80248830946c4be3ba1cff4a11e09 [2023-12-16 19:29:40,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:29:40,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:29:40,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:29:40,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:29:40,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:29:40,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af1bc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40, skipping insertion in model container [2023-12-16 19:29:40,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,442 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:29:40,560 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1247,1260] [2023-12-16 19:29:40,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:29:40,670 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:29:40,677 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1247,1260] [2023-12-16 19:29:40,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:29:40,754 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:29:40,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40 WrapperNode [2023-12-16 19:29:40,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:29:40,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:29:40,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:29:40,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:29:40,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,856 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 870 [2023-12-16 19:29:40,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:29:40,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:29:40,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:29:40,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:29:40,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,924 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]. [2023-12-16 19:29:40,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:40,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:41,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:29:41,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:29:41,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:29:41,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:29:41,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (1/1) ... [2023-12-16 19:29:41,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:29:41,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:29:41,052 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) [2023-12-16 19:29:41,072 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 [2023-12-16 19:29:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:29:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:29:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:29:41,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:29:41,177 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:29:41,178 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:29:41,826 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:29:41,855 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:29:41,856 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:29:41,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:29:41 BoogieIcfgContainer [2023-12-16 19:29:41,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:29:41,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:29:41,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:29:41,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:29:41,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:29:40" (1/3) ... [2023-12-16 19:29:41,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b5729b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:29:41, skipping insertion in model container [2023-12-16 19:29:41,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:40" (2/3) ... [2023-12-16 19:29:41,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b5729b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:29:41, skipping insertion in model container [2023-12-16 19:29:41,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:29:41" (3/3) ... [2023-12-16 19:29:41,863 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vlunc.c [2023-12-16 19:29:41,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:29:41,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:29:41,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:29:41,925 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;@541792ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:29:41,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:29:41,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 132 states have (on average 1.6666666666666667) internal successors, (220), 133 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 19:29:41,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:41,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:41,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:41,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:41,948 INFO L85 PathProgramCache]: Analyzing trace with hash -390413326, now seen corresponding path program 1 times [2023-12-16 19:29:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:41,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832725902] [2023-12-16 19:29:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:41,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:42,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:42,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832725902] [2023-12-16 19:29:42,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832725902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:42,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:42,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472186952] [2023-12-16 19:29:42,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:29:42,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:29:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:29:42,713 INFO L87 Difference]: Start difference. First operand has 134 states, 132 states have (on average 1.6666666666666667) internal successors, (220), 133 states have internal predecessors, (220), 0 states have call successors, (0), 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 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:42,768 INFO L93 Difference]: Finished difference Result 249 states and 411 transitions. [2023-12-16 19:29:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:29:42,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-16 19:29:42,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:42,780 INFO L225 Difference]: With dead ends: 249 [2023-12-16 19:29:42,780 INFO L226 Difference]: Without dead ends: 134 [2023-12-16 19:29:42,782 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 [2023-12-16 19:29:42,786 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:42,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 634 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:42,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-16 19:29:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-12-16 19:29:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.6390977443609023) internal successors, (218), 133 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 218 transitions. [2023-12-16 19:29:42,834 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 218 transitions. Word has length 68 [2023-12-16 19:29:42,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:42,835 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 218 transitions. [2023-12-16 19:29:42,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 218 transitions. [2023-12-16 19:29:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 19:29:42,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:42,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:42,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:29:42,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:42,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash 783814114, now seen corresponding path program 1 times [2023-12-16 19:29:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:42,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167419774] [2023-12-16 19:29:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:43,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:43,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167419774] [2023-12-16 19:29:43,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167419774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:43,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:43,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:43,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521069651] [2023-12-16 19:29:43,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:43,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:43,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:43,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:43,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:43,089 INFO L87 Difference]: Start difference. First operand 134 states and 218 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:43,416 INFO L93 Difference]: Finished difference Result 527 states and 850 transitions. [2023-12-16 19:29:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:29:43,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-16 19:29:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:43,419 INFO L225 Difference]: With dead ends: 527 [2023-12-16 19:29:43,419 INFO L226 Difference]: Without dead ends: 249 [2023-12-16 19:29:43,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:29:43,420 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1054 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:43,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 728 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:29:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-16 19:29:43,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 163. [2023-12-16 19:29:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.6358024691358024) internal successors, (265), 162 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 265 transitions. [2023-12-16 19:29:43,431 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 265 transitions. Word has length 69 [2023-12-16 19:29:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:43,433 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 265 transitions. [2023-12-16 19:29:43,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 265 transitions. [2023-12-16 19:29:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 19:29:43,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:43,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:43,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:29:43,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:43,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:43,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1356630126, now seen corresponding path program 1 times [2023-12-16 19:29:43,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:43,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997207832] [2023-12-16 19:29:43,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:43,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997207832] [2023-12-16 19:29:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997207832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:43,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:43,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233261726] [2023-12-16 19:29:43,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:43,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:43,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:43,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:43,667 INFO L87 Difference]: Start difference. First operand 163 states and 265 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 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) [2023-12-16 19:29:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:43,896 INFO L93 Difference]: Finished difference Result 385 states and 623 transitions. [2023-12-16 19:29:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:29:43,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-16 19:29:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:43,898 INFO L225 Difference]: With dead ends: 385 [2023-12-16 19:29:43,898 INFO L226 Difference]: Without dead ends: 270 [2023-12-16 19:29:43,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:29:43,899 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 695 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:43,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 531 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:29:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-16 19:29:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 187. [2023-12-16 19:29:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.6344086021505377) internal successors, (304), 186 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 304 transitions. [2023-12-16 19:29:43,908 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 304 transitions. Word has length 70 [2023-12-16 19:29:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:43,908 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 304 transitions. [2023-12-16 19:29:43,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 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) [2023-12-16 19:29:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 304 transitions. [2023-12-16 19:29:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 19:29:43,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:43,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:43,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:29:43,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:43,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1578280686, now seen corresponding path program 1 times [2023-12-16 19:29:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:43,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962290070] [2023-12-16 19:29:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:43,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:44,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:44,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962290070] [2023-12-16 19:29:44,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962290070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:44,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:44,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:44,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605940708] [2023-12-16 19:29:44,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:44,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:44,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:44,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:44,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:44,085 INFO L87 Difference]: Start difference. First operand 187 states and 304 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:44,368 INFO L93 Difference]: Finished difference Result 385 states and 622 transitions. [2023-12-16 19:29:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:29:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-16 19:29:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:44,370 INFO L225 Difference]: With dead ends: 385 [2023-12-16 19:29:44,370 INFO L226 Difference]: Without dead ends: 270 [2023-12-16 19:29:44,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:29:44,371 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 546 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:44,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 627 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:29:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-16 19:29:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 199. [2023-12-16 19:29:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.6313131313131313) internal successors, (323), 198 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 323 transitions. [2023-12-16 19:29:44,377 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 323 transitions. Word has length 71 [2023-12-16 19:29:44,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:44,378 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 323 transitions. [2023-12-16 19:29:44,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:44,378 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 323 transitions. [2023-12-16 19:29:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 19:29:44,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:44,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:44,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:29:44,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:44,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:44,379 INFO L85 PathProgramCache]: Analyzing trace with hash 580507178, now seen corresponding path program 1 times [2023-12-16 19:29:44,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:44,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855886206] [2023-12-16 19:29:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:44,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:44,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:44,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855886206] [2023-12-16 19:29:44,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855886206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:44,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:44,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:44,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782287580] [2023-12-16 19:29:44,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:44,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:29:44,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:44,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:29:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:29:44,553 INFO L87 Difference]: Start difference. First operand 199 states and 323 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2023-12-16 19:29:44,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:44,567 INFO L93 Difference]: Finished difference Result 317 states and 514 transitions. [2023-12-16 19:29:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:29:44,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-16 19:29:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:44,569 INFO L225 Difference]: With dead ends: 317 [2023-12-16 19:29:44,569 INFO L226 Difference]: Without dead ends: 202 [2023-12-16 19:29:44,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:29:44,571 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:44,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 632 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:44,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-16 19:29:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2023-12-16 19:29:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.625) internal successors, (325), 200 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 325 transitions. [2023-12-16 19:29:44,585 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 325 transitions. Word has length 72 [2023-12-16 19:29:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:44,586 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 325 transitions. [2023-12-16 19:29:44,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2023-12-16 19:29:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 325 transitions. [2023-12-16 19:29:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 19:29:44,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:44,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:44,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:29:44,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:44,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash 605421252, now seen corresponding path program 1 times [2023-12-16 19:29:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934515913] [2023-12-16 19:29:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:44,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:44,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934515913] [2023-12-16 19:29:44,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934515913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:44,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:44,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:29:44,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753727757] [2023-12-16 19:29:44,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:44,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:44,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:44,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:44,990 INFO L87 Difference]: Start difference. First operand 201 states and 325 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:45,068 INFO L93 Difference]: Finished difference Result 552 states and 891 transitions. [2023-12-16 19:29:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:29:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2023-12-16 19:29:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:45,070 INFO L225 Difference]: With dead ends: 552 [2023-12-16 19:29:45,070 INFO L226 Difference]: Without dead ends: 435 [2023-12-16 19:29:45,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:29:45,073 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 535 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:45,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 1487 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-16 19:29:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 206. [2023-12-16 19:29:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.6146341463414635) internal successors, (331), 205 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) [2023-12-16 19:29:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 331 transitions. [2023-12-16 19:29:45,083 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 331 transitions. Word has length 73 [2023-12-16 19:29:45,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:45,086 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 331 transitions. [2023-12-16 19:29:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 331 transitions. [2023-12-16 19:29:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 19:29:45,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:45,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:45,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:29:45,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:45,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:45,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1106870512, now seen corresponding path program 1 times [2023-12-16 19:29:45,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:45,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045876476] [2023-12-16 19:29:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:45,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045876476] [2023-12-16 19:29:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045876476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:29:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030863424] [2023-12-16 19:29:45,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:45,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:45,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:45,352 INFO L87 Difference]: Start difference. First operand 206 states and 331 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2023-12-16 19:29:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:45,462 INFO L93 Difference]: Finished difference Result 626 states and 997 transitions. [2023-12-16 19:29:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 19:29:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 [2023-12-16 19:29:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:45,466 INFO L225 Difference]: With dead ends: 626 [2023-12-16 19:29:45,466 INFO L226 Difference]: Without dead ends: 499 [2023-12-16 19:29:45,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:29:45,469 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 757 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:45,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1775 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-12-16 19:29:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 230. [2023-12-16 19:29:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.5938864628820961) internal successors, (365), 229 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 365 transitions. [2023-12-16 19:29:45,477 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 365 transitions. Word has length 74 [2023-12-16 19:29:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:45,477 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 365 transitions. [2023-12-16 19:29:45,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2023-12-16 19:29:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 365 transitions. [2023-12-16 19:29:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 19:29:45,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:45,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:45,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 19:29:45,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:45,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -832617674, now seen corresponding path program 1 times [2023-12-16 19:29:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:45,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160959045] [2023-12-16 19:29:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:45,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:45,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160959045] [2023-12-16 19:29:45,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160959045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:45,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:45,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:45,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394212299] [2023-12-16 19:29:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:45,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:45,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:45,863 INFO L87 Difference]: Start difference. First operand 230 states and 365 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 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) [2023-12-16 19:29:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:45,953 INFO L93 Difference]: Finished difference Result 519 states and 818 transitions. [2023-12-16 19:29:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:29:45,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 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 [2023-12-16 19:29:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:45,955 INFO L225 Difference]: With dead ends: 519 [2023-12-16 19:29:45,955 INFO L226 Difference]: Without dead ends: 381 [2023-12-16 19:29:45,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:29:45,956 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 595 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:45,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1011 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:45,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-16 19:29:45,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 244. [2023-12-16 19:29:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.5761316872427984) internal successors, (383), 243 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 383 transitions. [2023-12-16 19:29:45,960 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 383 transitions. Word has length 74 [2023-12-16 19:29:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:45,961 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 383 transitions. [2023-12-16 19:29:45,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 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) [2023-12-16 19:29:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 383 transitions. [2023-12-16 19:29:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 19:29:45,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:45,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:45,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 19:29:45,962 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:45,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1156783812, now seen corresponding path program 1 times [2023-12-16 19:29:45,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:45,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372806703] [2023-12-16 19:29:45,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:45,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372806703] [2023-12-16 19:29:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372806703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:46,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:46,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256554094] [2023-12-16 19:29:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:29:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:29:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:46,141 INFO L87 Difference]: Start difference. First operand 244 states and 383 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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) [2023-12-16 19:29:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:46,209 INFO L93 Difference]: Finished difference Result 450 states and 700 transitions. [2023-12-16 19:29:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:29:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 [2023-12-16 19:29:46,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:46,211 INFO L225 Difference]: With dead ends: 450 [2023-12-16 19:29:46,211 INFO L226 Difference]: Without dead ends: 296 [2023-12-16 19:29:46,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:46,213 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 512 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:46,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 613 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-16 19:29:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 238. [2023-12-16 19:29:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.5738396624472575) internal successors, (373), 237 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 373 transitions. [2023-12-16 19:29:46,221 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 373 transitions. Word has length 75 [2023-12-16 19:29:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:46,221 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 373 transitions. [2023-12-16 19:29:46,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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) [2023-12-16 19:29:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 373 transitions. [2023-12-16 19:29:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 19:29:46,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:46,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:46,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 19:29:46,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:46,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash -736651068, now seen corresponding path program 1 times [2023-12-16 19:29:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299561859] [2023-12-16 19:29:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:46,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:46,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299561859] [2023-12-16 19:29:46,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299561859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:46,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:46,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:29:46,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458498725] [2023-12-16 19:29:46,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:46,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:46,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:46,434 INFO L87 Difference]: Start difference. First operand 238 states and 373 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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) [2023-12-16 19:29:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:46,546 INFO L93 Difference]: Finished difference Result 788 states and 1219 transitions. [2023-12-16 19:29:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 19:29:46,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 [2023-12-16 19:29:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:46,548 INFO L225 Difference]: With dead ends: 788 [2023-12-16 19:29:46,548 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 19:29:46,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:29:46,549 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 757 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:46,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1680 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 19:29:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 270. [2023-12-16 19:29:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.553903345724907) internal successors, (418), 269 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 418 transitions. [2023-12-16 19:29:46,559 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 418 transitions. Word has length 75 [2023-12-16 19:29:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:46,559 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 418 transitions. [2023-12-16 19:29:46,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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) [2023-12-16 19:29:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 418 transitions. [2023-12-16 19:29:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 19:29:46,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:46,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:46,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 19:29:46,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:46,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1992432278, now seen corresponding path program 1 times [2023-12-16 19:29:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:46,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84013554] [2023-12-16 19:29:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:46,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84013554] [2023-12-16 19:29:46,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84013554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:46,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:46,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:29:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578520344] [2023-12-16 19:29:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:46,998 INFO L87 Difference]: Start difference. First operand 270 states and 418 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 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) [2023-12-16 19:29:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:47,122 INFO L93 Difference]: Finished difference Result 641 states and 984 transitions. [2023-12-16 19:29:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:29:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 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 [2023-12-16 19:29:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:47,125 INFO L225 Difference]: With dead ends: 641 [2023-12-16 19:29:47,125 INFO L226 Difference]: Without dead ends: 466 [2023-12-16 19:29:47,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:29:47,126 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 620 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:47,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1272 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-16 19:29:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 290. [2023-12-16 19:29:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.5363321799307958) internal successors, (444), 289 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:47,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 444 transitions. [2023-12-16 19:29:47,133 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 444 transitions. Word has length 75 [2023-12-16 19:29:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:47,134 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 444 transitions. [2023-12-16 19:29:47,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 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) [2023-12-16 19:29:47,134 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 444 transitions. [2023-12-16 19:29:47,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 19:29:47,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:47,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:47,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 19:29:47,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:47,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash 543992848, now seen corresponding path program 1 times [2023-12-16 19:29:47,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:47,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047828902] [2023-12-16 19:29:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:47,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:47,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047828902] [2023-12-16 19:29:47,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047828902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:47,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:47,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:47,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37388762] [2023-12-16 19:29:47,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:29:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:47,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:29:47,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:47,306 INFO L87 Difference]: Start difference. First operand 290 states and 444 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 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) [2023-12-16 19:29:47,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:47,377 INFO L93 Difference]: Finished difference Result 535 states and 812 transitions. [2023-12-16 19:29:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:29:47,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 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 [2023-12-16 19:29:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:47,379 INFO L225 Difference]: With dead ends: 535 [2023-12-16 19:29:47,379 INFO L226 Difference]: Without dead ends: 329 [2023-12-16 19:29:47,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:47,380 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 507 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:47,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 613 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-16 19:29:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 271. [2023-12-16 19:29:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.5296296296296297) internal successors, (413), 270 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 413 transitions. [2023-12-16 19:29:47,386 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 413 transitions. Word has length 76 [2023-12-16 19:29:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:47,386 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 413 transitions. [2023-12-16 19:29:47,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 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) [2023-12-16 19:29:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 413 transitions. [2023-12-16 19:29:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 19:29:47,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:47,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:47,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 19:29:47,387 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:47,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 264283664, now seen corresponding path program 1 times [2023-12-16 19:29:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:47,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370559877] [2023-12-16 19:29:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:47,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:47,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:47,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370559877] [2023-12-16 19:29:47,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370559877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:47,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:47,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:29:47,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607016672] [2023-12-16 19:29:47,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:47,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:47,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:47,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:47,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:47,591 INFO L87 Difference]: Start difference. First operand 271 states and 413 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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) [2023-12-16 19:29:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:47,706 INFO L93 Difference]: Finished difference Result 956 states and 1439 transitions. [2023-12-16 19:29:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 19:29:47,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 [2023-12-16 19:29:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:47,708 INFO L225 Difference]: With dead ends: 956 [2023-12-16 19:29:47,708 INFO L226 Difference]: Without dead ends: 740 [2023-12-16 19:29:47,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:29:47,709 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 755 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:47,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1585 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-12-16 19:29:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 303. [2023-12-16 19:29:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.5198675496688743) internal successors, (459), 302 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 459 transitions. [2023-12-16 19:29:47,716 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 459 transitions. Word has length 76 [2023-12-16 19:29:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:47,717 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 459 transitions. [2023-12-16 19:29:47,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 459 transitions. [2023-12-16 19:29:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 19:29:47,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:47,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:47,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 19:29:47,717 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:47,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2126764854, now seen corresponding path program 1 times [2023-12-16 19:29:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:47,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720125776] [2023-12-16 19:29:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:48,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:48,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720125776] [2023-12-16 19:29:48,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720125776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:48,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:48,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:29:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433012226] [2023-12-16 19:29:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:48,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:48,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:48,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:48,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:48,114 INFO L87 Difference]: Start difference. First operand 303 states and 459 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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) [2023-12-16 19:29:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:48,218 INFO L93 Difference]: Finished difference Result 759 states and 1139 transitions. [2023-12-16 19:29:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:29:48,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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 [2023-12-16 19:29:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:48,220 INFO L225 Difference]: With dead ends: 759 [2023-12-16 19:29:48,220 INFO L226 Difference]: Without dead ends: 544 [2023-12-16 19:29:48,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:29:48,221 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 644 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:48,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1228 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-12-16 19:29:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 323. [2023-12-16 19:29:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5124223602484472) internal successors, (487), 322 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 487 transitions. [2023-12-16 19:29:48,228 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 487 transitions. Word has length 76 [2023-12-16 19:29:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:48,229 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 487 transitions. [2023-12-16 19:29:48,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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) [2023-12-16 19:29:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 487 transitions. [2023-12-16 19:29:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 19:29:48,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:48,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:48,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 19:29:48,230 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:48,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:48,230 INFO L85 PathProgramCache]: Analyzing trace with hash -59512136, now seen corresponding path program 1 times [2023-12-16 19:29:48,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:48,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663432095] [2023-12-16 19:29:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:48,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:48,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663432095] [2023-12-16 19:29:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663432095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:48,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:48,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986434477] [2023-12-16 19:29:48,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:48,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:29:48,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:29:48,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:48,393 INFO L87 Difference]: Start difference. First operand 323 states and 487 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:48,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:48,454 INFO L93 Difference]: Finished difference Result 613 states and 914 transitions. [2023-12-16 19:29:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:29:48,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2023-12-16 19:29:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:48,456 INFO L225 Difference]: With dead ends: 613 [2023-12-16 19:29:48,456 INFO L226 Difference]: Without dead ends: 362 [2023-12-16 19:29:48,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:48,456 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 501 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:48,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 613 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-16 19:29:48,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 304. [2023-12-16 19:29:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.4983498349834983) internal successors, (454), 303 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 454 transitions. [2023-12-16 19:29:48,462 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 454 transitions. Word has length 77 [2023-12-16 19:29:48,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:48,462 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 454 transitions. [2023-12-16 19:29:48,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:48,463 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 454 transitions. [2023-12-16 19:29:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 19:29:48,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:48,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:48,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 19:29:48,463 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:48,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash -825980500, now seen corresponding path program 1 times [2023-12-16 19:29:48,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:48,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23624035] [2023-12-16 19:29:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:48,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23624035] [2023-12-16 19:29:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23624035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:48,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:29:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349681172] [2023-12-16 19:29:48,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:48,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:48,646 INFO L87 Difference]: Start difference. First operand 304 states and 454 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:48,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:48,839 INFO L93 Difference]: Finished difference Result 1124 states and 1660 transitions. [2023-12-16 19:29:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 19:29:48,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2023-12-16 19:29:48,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:48,843 INFO L225 Difference]: With dead ends: 1124 [2023-12-16 19:29:48,844 INFO L226 Difference]: Without dead ends: 863 [2023-12-16 19:29:48,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:29:48,844 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 757 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:48,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1485 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:48,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-16 19:29:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 336. [2023-12-16 19:29:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.48955223880597) internal successors, (499), 335 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 499 transitions. [2023-12-16 19:29:48,852 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 499 transitions. Word has length 77 [2023-12-16 19:29:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:48,852 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 499 transitions. [2023-12-16 19:29:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 499 transitions. [2023-12-16 19:29:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 19:29:48,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:48,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:48,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 19:29:48,854 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:48,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash 175357766, now seen corresponding path program 1 times [2023-12-16 19:29:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:48,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197675596] [2023-12-16 19:29:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:49,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197675596] [2023-12-16 19:29:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197675596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:49,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:49,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 19:29:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588041305] [2023-12-16 19:29:49,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:49,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 19:29:49,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:49,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 19:29:49,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:29:49,220 INFO L87 Difference]: Start difference. First operand 336 states and 499 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:49,856 INFO L93 Difference]: Finished difference Result 1594 states and 2358 transitions. [2023-12-16 19:29:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-16 19:29:49,857 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2023-12-16 19:29:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:49,861 INFO L225 Difference]: With dead ends: 1594 [2023-12-16 19:29:49,861 INFO L226 Difference]: Without dead ends: 1334 [2023-12-16 19:29:49,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1262, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 19:29:49,862 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 2654 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:49,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2654 Valid, 2559 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:29:49,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-12-16 19:29:49,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 356. [2023-12-16 19:29:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.4788732394366197) internal successors, (525), 355 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 525 transitions. [2023-12-16 19:29:49,874 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 525 transitions. Word has length 77 [2023-12-16 19:29:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:49,874 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 525 transitions. [2023-12-16 19:29:49,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 525 transitions. [2023-12-16 19:29:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 19:29:49,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:49,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:49,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 19:29:49,875 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:49,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash -375024880, now seen corresponding path program 1 times [2023-12-16 19:29:49,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:49,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492100080] [2023-12-16 19:29:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:49,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:50,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:50,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492100080] [2023-12-16 19:29:50,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492100080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:50,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:50,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:50,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214822386] [2023-12-16 19:29:50,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:50,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:29:50,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:29:50,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:50,031 INFO L87 Difference]: Start difference. First operand 356 states and 525 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) [2023-12-16 19:29:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:50,093 INFO L93 Difference]: Finished difference Result 691 states and 1013 transitions. [2023-12-16 19:29:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:29:50,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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 [2023-12-16 19:29:50,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:50,095 INFO L225 Difference]: With dead ends: 691 [2023-12-16 19:29:50,096 INFO L226 Difference]: Without dead ends: 395 [2023-12-16 19:29:50,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:50,096 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 496 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:50,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 613 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-12-16 19:29:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 337. [2023-12-16 19:29:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.4702380952380953) internal successors, (494), 336 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 494 transitions. [2023-12-16 19:29:50,103 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 494 transitions. Word has length 78 [2023-12-16 19:29:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:50,103 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 494 transitions. [2023-12-16 19:29:50,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) [2023-12-16 19:29:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 494 transitions. [2023-12-16 19:29:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 19:29:50,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:50,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:50,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 19:29:50,104 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:50,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash 650860816, now seen corresponding path program 1 times [2023-12-16 19:29:50,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:50,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182247745] [2023-12-16 19:29:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:50,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:50,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182247745] [2023-12-16 19:29:50,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182247745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:50,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:50,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916936544] [2023-12-16 19:29:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:50,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:29:50,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:50,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:29:50,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:50,233 INFO L87 Difference]: Start difference. First operand 337 states and 494 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2023-12-16 19:29:50,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:50,271 INFO L93 Difference]: Finished difference Result 945 states and 1377 transitions. [2023-12-16 19:29:50,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:29:50,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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 [2023-12-16 19:29:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:50,274 INFO L225 Difference]: With dead ends: 945 [2023-12-16 19:29:50,274 INFO L226 Difference]: Without dead ends: 661 [2023-12-16 19:29:50,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:50,275 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 372 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:50,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 922 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-16 19:29:50,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 363. [2023-12-16 19:29:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.4696132596685083) internal successors, (532), 362 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 532 transitions. [2023-12-16 19:29:50,283 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 532 transitions. Word has length 78 [2023-12-16 19:29:50,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:50,283 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 532 transitions. [2023-12-16 19:29:50,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2023-12-16 19:29:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 532 transitions. [2023-12-16 19:29:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 19:29:50,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:50,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:50,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 19:29:50,284 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:50,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1102064086, now seen corresponding path program 1 times [2023-12-16 19:29:50,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:50,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776984967] [2023-12-16 19:29:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:50,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:50,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:50,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776984967] [2023-12-16 19:29:50,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776984967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:50,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:50,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:50,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031905902] [2023-12-16 19:29:50,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:50,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:50,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:50,576 INFO L87 Difference]: Start difference. First operand 363 states and 532 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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) [2023-12-16 19:29:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:50,674 INFO L93 Difference]: Finished difference Result 993 states and 1444 transitions. [2023-12-16 19:29:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:29:50,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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 [2023-12-16 19:29:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:50,676 INFO L225 Difference]: With dead ends: 993 [2023-12-16 19:29:50,676 INFO L226 Difference]: Without dead ends: 691 [2023-12-16 19:29:50,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:29:50,679 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 696 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:50,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 892 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-12-16 19:29:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 383. [2023-12-16 19:29:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.4659685863874345) internal successors, (560), 382 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 560 transitions. [2023-12-16 19:29:50,691 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 560 transitions. Word has length 78 [2023-12-16 19:29:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:50,691 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 560 transitions. [2023-12-16 19:29:50,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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) [2023-12-16 19:29:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 560 transitions. [2023-12-16 19:29:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 19:29:50,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:50,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:50,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 19:29:50,692 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:50,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:50,692 INFO L85 PathProgramCache]: Analyzing trace with hash -131600072, now seen corresponding path program 1 times [2023-12-16 19:29:50,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:50,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202722778] [2023-12-16 19:29:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:50,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:50,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:50,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202722778] [2023-12-16 19:29:50,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202722778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:50,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:50,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:50,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855816956] [2023-12-16 19:29:50,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:50,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:29:50,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:50,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:29:50,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:50,853 INFO L87 Difference]: Start difference. First operand 383 states and 560 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:50,923 INFO L93 Difference]: Finished difference Result 760 states and 1103 transitions. [2023-12-16 19:29:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:29:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-16 19:29:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:50,925 INFO L225 Difference]: With dead ends: 760 [2023-12-16 19:29:50,925 INFO L226 Difference]: Without dead ends: 422 [2023-12-16 19:29:50,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:50,926 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 490 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:50,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 613 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-16 19:29:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 364. [2023-12-16 19:29:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.4517906336088153) internal successors, (527), 363 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 527 transitions. [2023-12-16 19:29:50,937 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 527 transitions. Word has length 79 [2023-12-16 19:29:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:50,937 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 527 transitions. [2023-12-16 19:29:50,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 527 transitions. [2023-12-16 19:29:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 19:29:50,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:50,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:50,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 19:29:50,938 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:50,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:50,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1505684478, now seen corresponding path program 1 times [2023-12-16 19:29:50,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:50,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159632932] [2023-12-16 19:29:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:50,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159632932] [2023-12-16 19:29:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159632932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:51,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:51,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170914851] [2023-12-16 19:29:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:51,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:51,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:51,226 INFO L87 Difference]: Start difference. First operand 364 states and 527 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:51,311 INFO L93 Difference]: Finished difference Result 970 states and 1403 transitions. [2023-12-16 19:29:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:29:51,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-16 19:29:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:51,313 INFO L225 Difference]: With dead ends: 970 [2023-12-16 19:29:51,313 INFO L226 Difference]: Without dead ends: 645 [2023-12-16 19:29:51,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:29:51,314 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 712 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:51,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 864 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-16 19:29:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 374. [2023-12-16 19:29:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.450402144772118) internal successors, (541), 373 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 541 transitions. [2023-12-16 19:29:51,326 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 541 transitions. Word has length 79 [2023-12-16 19:29:51,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:51,326 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 541 transitions. [2023-12-16 19:29:51,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 541 transitions. [2023-12-16 19:29:51,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 19:29:51,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:51,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:51,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 19:29:51,327 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:51,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1713186946, now seen corresponding path program 1 times [2023-12-16 19:29:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:51,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667749647] [2023-12-16 19:29:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:51,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:51,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:51,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667749647] [2023-12-16 19:29:51,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667749647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:51,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:51,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901590440] [2023-12-16 19:29:51,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:51,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:29:51,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:29:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:51,454 INFO L87 Difference]: Start difference. First operand 374 states and 541 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 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) [2023-12-16 19:29:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:51,517 INFO L93 Difference]: Finished difference Result 710 states and 1033 transitions. [2023-12-16 19:29:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:29:51,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 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 [2023-12-16 19:29:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:51,519 INFO L225 Difference]: With dead ends: 710 [2023-12-16 19:29:51,519 INFO L226 Difference]: Without dead ends: 365 [2023-12-16 19:29:51,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:51,520 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 448 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:51,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 613 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-12-16 19:29:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 323. [2023-12-16 19:29:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.4720496894409938) internal successors, (474), 322 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 474 transitions. [2023-12-16 19:29:51,527 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 474 transitions. Word has length 80 [2023-12-16 19:29:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:51,527 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 474 transitions. [2023-12-16 19:29:51,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 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) [2023-12-16 19:29:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 474 transitions. [2023-12-16 19:29:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 19:29:51,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:51,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:51,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 19:29:51,529 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:51,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1881667256, now seen corresponding path program 1 times [2023-12-16 19:29:51,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:51,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079996442] [2023-12-16 19:29:51,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:52,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079996442] [2023-12-16 19:29:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079996442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:29:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433387008] [2023-12-16 19:29:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:52,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:29:52,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:29:52,742 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) [2023-12-16 19:29:52,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:29:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:53,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:29:53,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:29:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:53,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:29:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433387008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:53,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:29:53,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-16 19:29:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330299527] [2023-12-16 19:29:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:53,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:53,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:53,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:29:53,304 INFO L87 Difference]: Start difference. First operand 323 states and 474 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:53,598 INFO L93 Difference]: Finished difference Result 820 states and 1199 transitions. [2023-12-16 19:29:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:29:53,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-16 19:29:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:53,601 INFO L225 Difference]: With dead ends: 820 [2023-12-16 19:29:53,601 INFO L226 Difference]: Without dead ends: 566 [2023-12-16 19:29:53,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:29:53,601 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 271 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:53,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 608 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:29:53,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-12-16 19:29:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 461. [2023-12-16 19:29:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.4695652173913043) internal successors, (676), 460 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 676 transitions. [2023-12-16 19:29:53,610 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 676 transitions. Word has length 150 [2023-12-16 19:29:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:53,610 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 676 transitions. [2023-12-16 19:29:53,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 676 transitions. [2023-12-16 19:29:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 19:29:53,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:53,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:53,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 19:29:53,819 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 [2023-12-16 19:29:53,820 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:53,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:53,820 INFO L85 PathProgramCache]: Analyzing trace with hash -201824756, now seen corresponding path program 1 times [2023-12-16 19:29:53,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:53,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866971469] [2023-12-16 19:29:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:53,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:55,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866971469] [2023-12-16 19:29:55,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866971469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:29:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110127457] [2023-12-16 19:29:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:55,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:29:55,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:29:55,069 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) [2023-12-16 19:29:55,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:29:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:55,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:29:55,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:29:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:55,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:29:55,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110127457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:55,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:29:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-16 19:29:55,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60692548] [2023-12-16 19:29:55,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:55,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:55,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:55,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:55,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:29:55,593 INFO L87 Difference]: Start difference. First operand 461 states and 676 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:55,902 INFO L93 Difference]: Finished difference Result 1253 states and 1828 transitions. [2023-12-16 19:29:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:29:55,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2023-12-16 19:29:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:55,905 INFO L225 Difference]: With dead ends: 1253 [2023-12-16 19:29:55,905 INFO L226 Difference]: Without dead ends: 861 [2023-12-16 19:29:55,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:29:55,906 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 291 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:55,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 608 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:29:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-16 19:29:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 684. [2023-12-16 19:29:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4685212298682284) internal successors, (1003), 683 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1003 transitions. [2023-12-16 19:29:55,921 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1003 transitions. Word has length 151 [2023-12-16 19:29:55,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:55,922 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1003 transitions. [2023-12-16 19:29:55,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1003 transitions. [2023-12-16 19:29:55,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 19:29:55,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:55,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:55,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 19:29:56,129 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 [2023-12-16 19:29:56,129 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:56,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1336190368, now seen corresponding path program 1 times [2023-12-16 19:29:56,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:56,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331344565] [2023-12-16 19:29:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:56,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:57,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:57,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331344565] [2023-12-16 19:29:57,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331344565] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:29:57,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443183400] [2023-12-16 19:29:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:57,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:29:57,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:29:57,338 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) [2023-12-16 19:29:57,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 19:29:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:57,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:29:57,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:29:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:57,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:29:57,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443183400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:57,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:29:57,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-16 19:29:57,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003935342] [2023-12-16 19:29:57,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:57,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:57,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:57,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:57,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:29:57,786 INFO L87 Difference]: Start difference. First operand 684 states and 1003 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:58,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:58,153 INFO L93 Difference]: Finished difference Result 1711 states and 2484 transitions. [2023-12-16 19:29:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:29:58,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2023-12-16 19:29:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:58,156 INFO L225 Difference]: With dead ends: 1711 [2023-12-16 19:29:58,156 INFO L226 Difference]: Without dead ends: 1079 [2023-12-16 19:29:58,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:29:58,158 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 285 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:58,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1015 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:29:58,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2023-12-16 19:29:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 854. [2023-12-16 19:29:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.4466588511137164) internal successors, (1234), 853 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1234 transitions. [2023-12-16 19:29:58,170 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1234 transitions. Word has length 151 [2023-12-16 19:29:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:58,170 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1234 transitions. [2023-12-16 19:29:58,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:29:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1234 transitions. [2023-12-16 19:29:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 19:29:58,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:58,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:58,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 19:29:58,383 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 [2023-12-16 19:29:58,383 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:58,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1019614882, now seen corresponding path program 1 times [2023-12-16 19:29:58,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:58,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452159351] [2023-12-16 19:29:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:58,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:59,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:59,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452159351] [2023-12-16 19:29:59,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452159351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:29:59,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263230088] [2023-12-16 19:29:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:59,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:29:59,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:29:59,480 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) [2023-12-16 19:29:59,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 19:29:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:59,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 19:29:59,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:29:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:59,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:29:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263230088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:59,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:29:59,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-12-16 19:29:59,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425232181] [2023-12-16 19:29:59,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:59,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:59,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:59,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:59,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:29:59,866 INFO L87 Difference]: Start difference. First operand 854 states and 1234 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:00,149 INFO L93 Difference]: Finished difference Result 1744 states and 2515 transitions. [2023-12-16 19:30:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:30:00,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2023-12-16 19:30:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:00,152 INFO L225 Difference]: With dead ends: 1744 [2023-12-16 19:30:00,152 INFO L226 Difference]: Without dead ends: 960 [2023-12-16 19:30:00,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-12-16 19:30:00,153 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 277 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:00,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 775 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:30:00,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-12-16 19:30:00,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 871. [2023-12-16 19:30:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 1.4298850574712643) internal successors, (1244), 870 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1244 transitions. [2023-12-16 19:30:00,165 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1244 transitions. Word has length 151 [2023-12-16 19:30:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:00,165 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1244 transitions. [2023-12-16 19:30:00,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1244 transitions. [2023-12-16 19:30:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 19:30:00,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:00,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:00,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:00,374 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 [2023-12-16 19:30:00,375 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:00,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash 29264688, now seen corresponding path program 1 times [2023-12-16 19:30:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785532013] [2023-12-16 19:30:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:01,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785532013] [2023-12-16 19:30:01,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785532013] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317510151] [2023-12-16 19:30:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:01,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:01,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:01,577 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) [2023-12-16 19:30:01,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 19:30:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:01,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:30:01,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:02,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:30:02,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317510151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:02,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:30:02,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-16 19:30:02,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973910080] [2023-12-16 19:30:02,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:02,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:30:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:30:02,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:30:02,054 INFO L87 Difference]: Start difference. First operand 871 states and 1244 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:02,339 INFO L93 Difference]: Finished difference Result 1812 states and 2571 transitions. [2023-12-16 19:30:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:30:02,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-16 19:30:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:02,342 INFO L225 Difference]: With dead ends: 1812 [2023-12-16 19:30:02,342 INFO L226 Difference]: Without dead ends: 1045 [2023-12-16 19:30:02,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:30:02,343 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 292 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:02,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 620 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:30:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-12-16 19:30:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 825. [2023-12-16 19:30:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.4174757281553398) internal successors, (1168), 824 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1168 transitions. [2023-12-16 19:30:02,355 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1168 transitions. Word has length 152 [2023-12-16 19:30:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:02,355 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1168 transitions. [2023-12-16 19:30:02,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:02,355 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1168 transitions. [2023-12-16 19:30:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 19:30:02,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:02,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:02,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:02,564 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 [2023-12-16 19:30:02,564 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:02,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash 981688600, now seen corresponding path program 1 times [2023-12-16 19:30:02,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:02,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73305579] [2023-12-16 19:30:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:02,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:04,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:04,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73305579] [2023-12-16 19:30:04,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73305579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:04,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396173903] [2023-12-16 19:30:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:04,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:04,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:04,401 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) [2023-12-16 19:30:04,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 19:30:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:04,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 122 conjunts are in the unsatisfiable core [2023-12-16 19:30:04,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:05,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:30:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-16 19:30:05,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396173903] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:05,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:30:05,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10, 17] total 38 [2023-12-16 19:30:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216825305] [2023-12-16 19:30:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:05,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 19:30:05,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 19:30:05,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 19:30:05,982 INFO L87 Difference]: Start difference. First operand 825 states and 1168 transitions. Second operand has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 13 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:10,539 INFO L93 Difference]: Finished difference Result 10752 states and 15487 transitions. [2023-12-16 19:30:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-16 19:30:10,539 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 13 states have internal predecessors, (115), 0 states have call successors, (0), 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 152 [2023-12-16 19:30:10,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:10,566 INFO L225 Difference]: With dead ends: 10752 [2023-12-16 19:30:10,566 INFO L226 Difference]: Without dead ends: 10750 [2023-12-16 19:30:10,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1071, Invalid=8829, Unknown=0, NotChecked=0, Total=9900 [2023-12-16 19:30:10,574 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 3849 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 3274 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:10,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3849 Valid, 3218 Invalid, 3301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3274 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 19:30:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10750 states. [2023-12-16 19:30:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10750 to 2233. [2023-12-16 19:30:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 2232 states have (on average 1.439516129032258) internal successors, (3213), 2232 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 3213 transitions. [2023-12-16 19:30:10,666 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 3213 transitions. Word has length 152 [2023-12-16 19:30:10,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:10,666 INFO L495 AbstractCegarLoop]: Abstraction has 2233 states and 3213 transitions. [2023-12-16 19:30:10,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 13 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 3213 transitions. [2023-12-16 19:30:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 19:30:10,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:10,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:10,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 19:30:10,876 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 [2023-12-16 19:30:10,878 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:10,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:10,879 INFO L85 PathProgramCache]: Analyzing trace with hash 981748182, now seen corresponding path program 1 times [2023-12-16 19:30:10,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:10,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651825024] [2023-12-16 19:30:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:10,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:12,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651825024] [2023-12-16 19:30:12,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651825024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864885853] [2023-12-16 19:30:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:12,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:12,526 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) [2023-12-16 19:30:12,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 19:30:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:12,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-16 19:30:12,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:13,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:30:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 19:30:13,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864885853] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:13,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:30:13,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 15] total 33 [2023-12-16 19:30:13,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147881775] [2023-12-16 19:30:13,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:13,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 19:30:13,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:13,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 19:30:13,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 19:30:13,569 INFO L87 Difference]: Start difference. First operand 2233 states and 3213 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:13,749 INFO L93 Difference]: Finished difference Result 4408 states and 6344 transitions. [2023-12-16 19:30:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:30:13,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 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 152 [2023-12-16 19:30:13,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:13,753 INFO L225 Difference]: With dead ends: 4408 [2023-12-16 19:30:13,753 INFO L226 Difference]: Without dead ends: 2279 [2023-12-16 19:30:13,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 19:30:13,756 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 916 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:13,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1776 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:30:13,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2023-12-16 19:30:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 825. [2023-12-16 19:30:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.4174757281553398) internal successors, (1168), 824 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1168 transitions. [2023-12-16 19:30:13,770 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1168 transitions. Word has length 152 [2023-12-16 19:30:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:13,770 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1168 transitions. [2023-12-16 19:30:13,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1168 transitions. [2023-12-16 19:30:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 19:30:13,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:13,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:13,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:13,979 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 [2023-12-16 19:30:13,982 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:13,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:13,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1509306238, now seen corresponding path program 1 times [2023-12-16 19:30:13,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:13,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307874344] [2023-12-16 19:30:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:13,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:14,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307874344] [2023-12-16 19:30:14,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307874344] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:14,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903465368] [2023-12-16 19:30:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:14,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:14,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:14,939 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) [2023-12-16 19:30:14,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 19:30:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:15,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:30:15,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:15,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:30:15,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903465368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:15,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:30:15,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-16 19:30:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780640776] [2023-12-16 19:30:15,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:15,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:30:15,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:30:15,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:30:15,372 INFO L87 Difference]: Start difference. First operand 825 states and 1168 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:15,733 INFO L93 Difference]: Finished difference Result 2095 states and 2970 transitions. [2023-12-16 19:30:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:30:15,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-16 19:30:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:15,736 INFO L225 Difference]: With dead ends: 2095 [2023-12-16 19:30:15,737 INFO L226 Difference]: Without dead ends: 1297 [2023-12-16 19:30:15,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:30:15,738 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 309 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:15,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1020 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:30:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2023-12-16 19:30:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1040. [2023-12-16 19:30:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1039 states have (on average 1.4186717998075071) internal successors, (1474), 1039 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1474 transitions. [2023-12-16 19:30:15,750 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1474 transitions. Word has length 152 [2023-12-16 19:30:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:15,750 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 1474 transitions. [2023-12-16 19:30:15,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1474 transitions. [2023-12-16 19:30:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 19:30:15,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:15,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:15,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:15,960 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 [2023-12-16 19:30:15,961 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:15,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -122520828, now seen corresponding path program 1 times [2023-12-16 19:30:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516381654] [2023-12-16 19:30:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:16,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516381654] [2023-12-16 19:30:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516381654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120260398] [2023-12-16 19:30:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:16,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:16,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:16,845 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) [2023-12-16 19:30:16,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 19:30:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:17,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 19:30:17,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:17,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:30:17,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120260398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:17,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:30:17,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-12-16 19:30:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808970799] [2023-12-16 19:30:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:17,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:30:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:30:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:30:17,271 INFO L87 Difference]: Start difference. First operand 1040 states and 1474 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:17,543 INFO L93 Difference]: Finished difference Result 2146 states and 3046 transitions. [2023-12-16 19:30:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:30:17,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-16 19:30:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:17,545 INFO L225 Difference]: With dead ends: 2146 [2023-12-16 19:30:17,545 INFO L226 Difference]: Without dead ends: 1132 [2023-12-16 19:30:17,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-12-16 19:30:17,546 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 292 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:17,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 777 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:30:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-12-16 19:30:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1013. [2023-12-16 19:30:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 1.41699604743083) internal successors, (1434), 1012 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1434 transitions. [2023-12-16 19:30:17,558 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1434 transitions. Word has length 152 [2023-12-16 19:30:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:17,558 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1434 transitions. [2023-12-16 19:30:17,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:17,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1434 transitions. [2023-12-16 19:30:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-16 19:30:17,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:17,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:17,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:17,767 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 [2023-12-16 19:30:17,767 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:17,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:17,768 INFO L85 PathProgramCache]: Analyzing trace with hash -907135452, now seen corresponding path program 1 times [2023-12-16 19:30:17,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:17,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463917415] [2023-12-16 19:30:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:17,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:18,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:18,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463917415] [2023-12-16 19:30:18,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463917415] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:18,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537112960] [2023-12-16 19:30:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:18,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:18,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:18,658 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) [2023-12-16 19:30:18,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 19:30:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:18,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 19:30:18,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:19,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:30:19,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537112960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:19,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:30:19,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-16 19:30:19,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209156626] [2023-12-16 19:30:19,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:19,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:30:19,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:19,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:30:19,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:30:19,044 INFO L87 Difference]: Start difference. First operand 1013 states and 1434 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:19,313 INFO L93 Difference]: Finished difference Result 2563 states and 3597 transitions. [2023-12-16 19:30:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:30:19,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-16 19:30:19,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:19,315 INFO L225 Difference]: With dead ends: 2563 [2023-12-16 19:30:19,315 INFO L226 Difference]: Without dead ends: 1653 [2023-12-16 19:30:19,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:30:19,317 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 402 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:19,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 609 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:30:19,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2023-12-16 19:30:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1157. [2023-12-16 19:30:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.3961937716262975) internal successors, (1614), 1156 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1614 transitions. [2023-12-16 19:30:19,330 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1614 transitions. Word has length 153 [2023-12-16 19:30:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:19,330 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1614 transitions. [2023-12-16 19:30:19,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1614 transitions. [2023-12-16 19:30:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-16 19:30:19,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:19,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:19,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:19,546 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 [2023-12-16 19:30:19,547 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:19,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:19,547 INFO L85 PathProgramCache]: Analyzing trace with hash -814731908, now seen corresponding path program 1 times [2023-12-16 19:30:19,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:19,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273991371] [2023-12-16 19:30:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:19,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 31 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:19,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273991371] [2023-12-16 19:30:19,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273991371] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451946975] [2023-12-16 19:30:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:19,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:19,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:19,971 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) [2023-12-16 19:30:19,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 19:30:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:20,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 19:30:20,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:20,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:30:20,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451946975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:20,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:30:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2023-12-16 19:30:20,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122296088] [2023-12-16 19:30:20,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:20,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:30:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:20,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:30:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:30:20,408 INFO L87 Difference]: Start difference. First operand 1157 states and 1614 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:20,708 INFO L93 Difference]: Finished difference Result 2685 states and 3745 transitions. [2023-12-16 19:30:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:30:20,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-16 19:30:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:20,710 INFO L225 Difference]: With dead ends: 2685 [2023-12-16 19:30:20,710 INFO L226 Difference]: Without dead ends: 1631 [2023-12-16 19:30:20,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:30:20,712 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 243 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:20,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 849 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:30:20,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-12-16 19:30:20,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1569. [2023-12-16 19:30:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1568 states have (on average 1.3807397959183674) internal successors, (2165), 1568 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2165 transitions. [2023-12-16 19:30:20,731 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2165 transitions. Word has length 153 [2023-12-16 19:30:20,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:20,731 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2165 transitions. [2023-12-16 19:30:20,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2165 transitions. [2023-12-16 19:30:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-16 19:30:20,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:20,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:20,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:20,940 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 [2023-12-16 19:30:20,941 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:20,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash -704448696, now seen corresponding path program 1 times [2023-12-16 19:30:20,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:20,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751977878] [2023-12-16 19:30:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:20,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:22,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751977878] [2023-12-16 19:30:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751977878] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775422182] [2023-12-16 19:30:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:22,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:22,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:22,556 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) [2023-12-16 19:30:22,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 19:30:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:22,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-16 19:30:22,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:23,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:30:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 19:30:24,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775422182] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:24,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:30:24,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10, 13] total 35 [2023-12-16 19:30:24,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011897900] [2023-12-16 19:30:24,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:24,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 19:30:24,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:24,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 19:30:24,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 19:30:24,115 INFO L87 Difference]: Start difference. First operand 1569 states and 2165 transitions. Second operand has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:27,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:27,150 INFO L93 Difference]: Finished difference Result 16080 states and 22287 transitions. [2023-12-16 19:30:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 19:30:27,151 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 0 states have call successors, (0), 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 153 [2023-12-16 19:30:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:27,173 INFO L225 Difference]: With dead ends: 16080 [2023-12-16 19:30:27,174 INFO L226 Difference]: Without dead ends: 14614 [2023-12-16 19:30:27,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=419, Invalid=3003, Unknown=0, NotChecked=0, Total=3422 [2023-12-16 19:30:27,182 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 2693 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:27,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2693 Valid, 3919 Invalid, 3725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 19:30:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14614 states. [2023-12-16 19:30:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14614 to 4357. [2023-12-16 19:30:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4357 states, 4356 states have (on average 1.3898071625344353) internal successors, (6054), 4356 states have internal predecessors, (6054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4357 states to 4357 states and 6054 transitions. [2023-12-16 19:30:27,303 INFO L78 Accepts]: Start accepts. Automaton has 4357 states and 6054 transitions. Word has length 153 [2023-12-16 19:30:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:27,303 INFO L495 AbstractCegarLoop]: Abstraction has 4357 states and 6054 transitions. [2023-12-16 19:30:27,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:30:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4357 states and 6054 transitions. [2023-12-16 19:30:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-16 19:30:27,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:27,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:27,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:27,513 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 [2023-12-16 19:30:27,514 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:27,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:27,514 INFO L85 PathProgramCache]: Analyzing trace with hash -704389114, now seen corresponding path program 1 times [2023-12-16 19:30:27,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:27,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818866012] [2023-12-16 19:30:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:27,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:29,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:29,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818866012] [2023-12-16 19:30:29,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818866012] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:30:29,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537501314] [2023-12-16 19:30:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:29,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:30:29,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:29,090 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) [2023-12-16 19:30:29,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 19:30:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:29,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-16 19:30:29,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:30:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:29,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:30:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 19:30:30,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537501314] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:30:30,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:30:30,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 14] total 37 [2023-12-16 19:30:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308068492] [2023-12-16 19:30:30,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:30:30,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 19:30:30,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 19:30:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1101, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 19:30:30,300 INFO L87 Difference]: Start difference. First operand 4357 states and 6054 transitions. Second operand has 37 states, 37 states have (on average 10.972972972972974) internal successors, (406), 37 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 19:30:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-16 19:30:32,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1208, Invalid=4492, Unknown=0, NotChecked=0, Total=5700 [2023-12-16 19:30:32,177 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 2483 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 2066 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:32,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2483 Valid, 1486 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2066 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 19:30:32,178 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 [2023-12-16 19:30:32,178 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:30:32,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 19:30:32,203 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 [2023-12-16 19:30:32,388 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 [2023-12-16 19:30:32,390 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (4357states) and FLOYD_HOARE automaton (currently 41 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (2221 states constructed, input type IntersectNwa). [2023-12-16 19:30:32,393 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] [2023-12-16 19:30:32,395 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:30:32,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:30:32 BoogieIcfgContainer [2023-12-16 19:30:32,396 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:30:32,412 INFO L158 Benchmark]: Toolchain (without parser) took 52000.58ms. Allocated memory was 354.4MB in the beginning and 1.0GB in the end (delta: 657.5MB). Free memory was 302.7MB in the beginning and 531.7MB in the end (delta: -228.9MB). Peak memory consumption was 429.2MB. Max. memory is 8.0GB. [2023-12-16 19:30:32,412 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 219.2MB. Free memory is still 168.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:30:32,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.67ms. Allocated memory is still 354.4MB. Free memory was 302.4MB in the beginning and 279.7MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-16 19:30:32,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.21ms. Allocated memory is still 354.4MB. Free memory was 279.7MB in the beginning and 262.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 19:30:32,412 INFO L158 Benchmark]: Boogie Preprocessor took 171.91ms. Allocated memory is still 354.4MB. Free memory was 262.9MB in the beginning and 310.3MB in the end (delta: -47.5MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. [2023-12-16 19:30:32,413 INFO L158 Benchmark]: RCFGBuilder took 827.08ms. Allocated memory is still 354.4MB. Free memory was 310.3MB in the beginning and 257.8MB in the end (delta: 52.5MB). Peak memory consumption was 58.8MB. Max. memory is 8.0GB. [2023-12-16 19:30:32,413 INFO L158 Benchmark]: TraceAbstraction took 50537.86ms. Allocated memory was 354.4MB in the beginning and 1.0GB in the end (delta: 657.5MB). Free memory was 256.8MB in the beginning and 531.7MB in the end (delta: -274.9MB). Peak memory consumption was 382.6MB. Max. memory is 8.0GB. [2023-12-16 19:30:32,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 219.2MB. Free memory is still 168.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 357.67ms. Allocated memory is still 354.4MB. Free memory was 302.4MB in the beginning and 279.7MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 101.21ms. Allocated memory is still 354.4MB. Free memory was 279.7MB in the beginning and 262.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 171.91ms. Allocated memory is still 354.4MB. Free memory was 262.9MB in the beginning and 310.3MB in the end (delta: -47.5MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. * RCFGBuilder took 827.08ms. Allocated memory is still 354.4MB. Free memory was 310.3MB in the beginning and 257.8MB in the end (delta: 52.5MB). Peak memory consumption was 58.8MB. Max. memory is 8.0GB. * TraceAbstraction took 50537.86ms. Allocated memory was 354.4MB in the beginning and 1.0GB in the end (delta: 657.5MB). Free memory was 256.8MB in the beginning and 531.7MB in the end (delta: -274.9MB). Peak memory consumption was 382.6MB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (4357states) and FLOYD_HOARE automaton (currently 41 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (2221 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 134 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.5s, OverallIterations: 36, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27708 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27708 mSDsluCounter, 40870 SdHoareTripleChecker+Invalid, 8.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32287 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16168 IncrementalHoareTripleChecker+Invalid, 16290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 8583 mSDtfsCounter, 16168 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3147 GetRequests, 2541 SyntacticMatches, 1 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6764 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4357occurred in iteration=35, InterpolantAutomatonStates: 400, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 35 MinimizatonAttempts, 26749 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 22.7s InterpolantComputationTime, 5677 NumberOfCodeBlocks, 5677 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 6234 ConstructedInterpolants, 0 QuantifiedInterpolants, 41038 SizeOfPredicates, 162 NumberOfNonLiveVariables, 15575 ConjunctsInSsa, 510 ConjunctsInUnsatCore, 53 InterpolantComputations, 35 PerfectInterpolantSequences, 1136/1622 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