/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.sw_ball2004_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 22:16:25,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 22:16:26,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 22:16:26,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 22:16:26,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 22:16:26,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 22:16:26,067 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 22:16:26,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 22:16:26,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 22:16:26,071 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 22:16:26,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 22:16:26,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 22:16:26,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 22:16:26,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 22:16:26,073 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 22:16:26,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 22:16:26,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 22:16:26,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 22:16:26,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 22:16:26,074 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 22:16:26,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 22:16:26,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 22:16:26,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 22:16:26,075 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 22:16:26,075 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 22:16:26,076 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 22:16:26,076 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 22:16:26,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 22:16:26,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 22:16:26,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 22:16:26,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 22:16:26,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 22:16:26,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 22:16:26,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 22:16:26,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 22:16:26,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 22:16:26,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 22:16:26,078 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 22:16:26,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 22:16:26,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 22:16:26,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 22:16:26,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 22:16:26,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 22:16:26,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 22:16:26,295 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 22:16:26,296 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 22:16:26,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2023-12-25 22:16:27,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 22:16:27,469 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 22:16:27,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2023-12-25 22:16:27,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd01f2fa5/119b1be773794f40ad4ae3f67cc713d6/FLAG17f872854 [2023-12-25 22:16:27,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd01f2fa5/119b1be773794f40ad4ae3f67cc713d6 [2023-12-25 22:16:27,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 22:16:27,868 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 22:16:27,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 22:16:27,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 22:16:27,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 22:16:27,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:16:27" (1/1) ... [2023-12-25 22:16:27,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f278ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:27, skipping insertion in model container [2023-12-25 22:16:27,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:16:27" (1/1) ... [2023-12-25 22:16:27,920 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 22:16:28,010 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.sw_ball2004_1.c[1253,1266] [2023-12-25 22:16:28,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 22:16:28,099 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 22:16:28,107 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.sw_ball2004_1.c[1253,1266] [2023-12-25 22:16:28,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 22:16:28,173 INFO L206 MainTranslator]: Completed translation [2023-12-25 22:16:28,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28 WrapperNode [2023-12-25 22:16:28,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 22:16:28,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 22:16:28,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 22:16:28,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 22:16:28,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,253 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 745 [2023-12-25 22:16:28,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 22:16:28,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 22:16:28,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 22:16:28,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 22:16:28,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,321 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]. [2023-12-25 22:16:28,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 22:16:28,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 22:16:28,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 22:16:28,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 22:16:28,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (1/1) ... [2023-12-25 22:16:28,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 22:16:28,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:16:28,414 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) [2023-12-25 22:16:28,430 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 [2023-12-25 22:16:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 22:16:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 22:16:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 22:16:28,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 22:16:28,551 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 22:16:28,552 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 22:16:29,131 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 22:16:29,159 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 22:16:29,159 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 22:16:29,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:16:29 BoogieIcfgContainer [2023-12-25 22:16:29,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 22:16:29,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 22:16:29,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 22:16:29,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 22:16:29,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 10:16:27" (1/3) ... [2023-12-25 22:16:29,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796d61c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:16:29, skipping insertion in model container [2023-12-25 22:16:29,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:16:28" (2/3) ... [2023-12-25 22:16:29,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796d61c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:16:29, skipping insertion in model container [2023-12-25 22:16:29,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:16:29" (3/3) ... [2023-12-25 22:16:29,166 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2023-12-25 22:16:29,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 22:16:29,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 22:16:29,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 22:16:29,224 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;@a5505ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 22:16:29,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 22:16:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 144 states have (on average 1.6666666666666667) internal successors, (240), 145 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-25 22:16:29,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:29,236 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] [2023-12-25 22:16:29,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:29,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash -351371405, now seen corresponding path program 1 times [2023-12-25 22:16:29,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047564397] [2023-12-25 22:16:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:29,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:29,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047564397] [2023-12-25 22:16:29,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047564397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:29,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:29,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:29,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725679556] [2023-12-25 22:16:29,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:29,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:16:29,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:16:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:16:29,578 INFO L87 Difference]: Start difference. First operand has 146 states, 144 states have (on average 1.6666666666666667) internal successors, (240), 145 states have internal predecessors, (240), 0 states have call successors, (0), 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 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:29,632 INFO L93 Difference]: Finished difference Result 264 states and 436 transitions. [2023-12-25 22:16:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:16:29,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-25 22:16:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:29,639 INFO L225 Difference]: With dead ends: 264 [2023-12-25 22:16:29,639 INFO L226 Difference]: Without dead ends: 146 [2023-12-25 22:16:29,641 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 [2023-12-25 22:16:29,643 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 694 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 [2023-12-25 22:16:29,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 694 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:29,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-25 22:16:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-25 22:16:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.6413793103448275) internal successors, (238), 145 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 238 transitions. [2023-12-25 22:16:29,673 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 238 transitions. Word has length 26 [2023-12-25 22:16:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:29,673 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 238 transitions. [2023-12-25 22:16:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 238 transitions. [2023-12-25 22:16:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-25 22:16:29,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:29,674 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] [2023-12-25 22:16:29,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 22:16:29,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:29,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:29,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1994113413, now seen corresponding path program 1 times [2023-12-25 22:16:29,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:29,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019027947] [2023-12-25 22:16:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:29,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:29,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:29,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019027947] [2023-12-25 22:16:29,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019027947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:29,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:29,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021901660] [2023-12-25 22:16:29,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:16:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:16:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:16:29,806 INFO L87 Difference]: Start difference. First operand 146 states and 238 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:29,828 INFO L93 Difference]: Finished difference Result 267 states and 434 transitions. [2023-12-25 22:16:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:16:29,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-25 22:16:29,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:29,829 INFO L225 Difference]: With dead ends: 267 [2023-12-25 22:16:29,830 INFO L226 Difference]: Without dead ends: 149 [2023-12-25 22:16:29,830 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 [2023-12-25 22:16:29,831 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 692 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 [2023-12-25 22:16:29,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 692 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-25 22:16:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2023-12-25 22:16:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.6326530612244898) internal successors, (240), 147 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 240 transitions. [2023-12-25 22:16:29,837 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 240 transitions. Word has length 27 [2023-12-25 22:16:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:29,838 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 240 transitions. [2023-12-25 22:16:29,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:29,838 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 240 transitions. [2023-12-25 22:16:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-25 22:16:29,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:29,838 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] [2023-12-25 22:16:29,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 22:16:29,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:29,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1042418609, now seen corresponding path program 1 times [2023-12-25 22:16:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:29,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493234472] [2023-12-25 22:16:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:29,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:29,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493234472] [2023-12-25 22:16:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493234472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:29,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316040391] [2023-12-25 22:16:29,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:29,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:16:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:16:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:16:29,977 INFO L87 Difference]: Start difference. First operand 148 states and 240 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:30,048 INFO L93 Difference]: Finished difference Result 381 states and 618 transitions. [2023-12-25 22:16:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:30,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-12-25 22:16:30,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:30,052 INFO L225 Difference]: With dead ends: 381 [2023-12-25 22:16:30,052 INFO L226 Difference]: Without dead ends: 261 [2023-12-25 22:16:30,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:16:30,054 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 763 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:30,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 678 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-25 22:16:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 150. [2023-12-25 22:16:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.6241610738255035) internal successors, (242), 149 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 242 transitions. [2023-12-25 22:16:30,062 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 242 transitions. Word has length 28 [2023-12-25 22:16:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:30,062 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 242 transitions. [2023-12-25 22:16:30,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:30,062 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 242 transitions. [2023-12-25 22:16:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-25 22:16:30,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:30,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:30,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 22:16:30,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:30,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1443627800, now seen corresponding path program 1 times [2023-12-25 22:16:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:30,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613781156] [2023-12-25 22:16:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613781156] [2023-12-25 22:16:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613781156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921182448] [2023-12-25 22:16:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:16:30,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:16:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:16:30,681 INFO L87 Difference]: Start difference. First operand 150 states and 242 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:30,747 INFO L93 Difference]: Finished difference Result 407 states and 655 transitions. [2023-12-25 22:16:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:30,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-25 22:16:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:30,749 INFO L225 Difference]: With dead ends: 407 [2023-12-25 22:16:30,749 INFO L226 Difference]: Without dead ends: 287 [2023-12-25 22:16:30,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:16:30,757 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 785 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:30,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 701 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-25 22:16:30,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 169. [2023-12-25 22:16:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.6011904761904763) internal successors, (269), 168 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 269 transitions. [2023-12-25 22:16:30,770 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 269 transitions. Word has length 105 [2023-12-25 22:16:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:30,770 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 269 transitions. [2023-12-25 22:16:30,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:30,770 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 269 transitions. [2023-12-25 22:16:30,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-25 22:16:30,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:30,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:30,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 22:16:30,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:30,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:30,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1925800384, now seen corresponding path program 1 times [2023-12-25 22:16:30,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576303786] [2023-12-25 22:16:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:31,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576303786] [2023-12-25 22:16:31,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576303786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:31,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:31,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:31,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43892496] [2023-12-25 22:16:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:31,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:16:31,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:16:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:16:31,289 INFO L87 Difference]: Start difference. First operand 169 states and 269 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:31,408 INFO L93 Difference]: Finished difference Result 425 states and 683 transitions. [2023-12-25 22:16:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:31,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-25 22:16:31,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:31,411 INFO L225 Difference]: With dead ends: 425 [2023-12-25 22:16:31,411 INFO L226 Difference]: Without dead ends: 305 [2023-12-25 22:16:31,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:16:31,412 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 798 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:31,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 720 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:16:31,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-25 22:16:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 187. [2023-12-25 22:16:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.596774193548387) internal successors, (297), 186 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 297 transitions. [2023-12-25 22:16:31,421 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 297 transitions. Word has length 106 [2023-12-25 22:16:31,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:31,422 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 297 transitions. [2023-12-25 22:16:31,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 297 transitions. [2023-12-25 22:16:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 22:16:31,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:31,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:31,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 22:16:31,426 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:31,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1215453436, now seen corresponding path program 1 times [2023-12-25 22:16:31,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:31,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062335528] [2023-12-25 22:16:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:31,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:31,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:31,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062335528] [2023-12-25 22:16:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062335528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:31,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430890495] [2023-12-25 22:16:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:16:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:16:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:16:31,953 INFO L87 Difference]: Start difference. First operand 187 states and 297 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:32,050 INFO L93 Difference]: Finished difference Result 467 states and 751 transitions. [2023-12-25 22:16:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:32,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-25 22:16:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:32,052 INFO L225 Difference]: With dead ends: 467 [2023-12-25 22:16:32,052 INFO L226 Difference]: Without dead ends: 347 [2023-12-25 22:16:32,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:16:32,053 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 838 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:32,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 784 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-25 22:16:32,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 228. [2023-12-25 22:16:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.60352422907489) internal successors, (364), 227 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 364 transitions. [2023-12-25 22:16:32,057 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 364 transitions. Word has length 107 [2023-12-25 22:16:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:32,058 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 364 transitions. [2023-12-25 22:16:32,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 364 transitions. [2023-12-25 22:16:32,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-25 22:16:32,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:32,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:32,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 22:16:32,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:32,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1825501998, now seen corresponding path program 1 times [2023-12-25 22:16:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719441496] [2023-12-25 22:16:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:32,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:32,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:32,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719441496] [2023-12-25 22:16:32,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719441496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:32,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:32,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176358158] [2023-12-25 22:16:32,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:32,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:16:32,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:32,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:16:32,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:16:32,526 INFO L87 Difference]: Start difference. First operand 228 states and 364 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:32,609 INFO L93 Difference]: Finished difference Result 466 states and 747 transitions. [2023-12-25 22:16:32,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:32,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-25 22:16:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:32,611 INFO L225 Difference]: With dead ends: 466 [2023-12-25 22:16:32,611 INFO L226 Difference]: Without dead ends: 332 [2023-12-25 22:16:32,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:16:32,612 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 820 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:32,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 760 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-25 22:16:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 228. [2023-12-25 22:16:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.5991189427312775) internal successors, (363), 227 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 363 transitions. [2023-12-25 22:16:32,618 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 363 transitions. Word has length 108 [2023-12-25 22:16:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:32,618 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 363 transitions. [2023-12-25 22:16:32,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:32,618 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 363 transitions. [2023-12-25 22:16:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-25 22:16:32,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:32,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:32,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 22:16:32,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:32,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash 106821370, now seen corresponding path program 1 times [2023-12-25 22:16:32,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:32,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868299922] [2023-12-25 22:16:32,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:33,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:33,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868299922] [2023-12-25 22:16:33,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868299922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:33,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:33,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:16:33,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514992241] [2023-12-25 22:16:33,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:33,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:16:33,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:33,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:16:33,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:16:33,066 INFO L87 Difference]: Start difference. First operand 228 states and 363 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:33,184 INFO L93 Difference]: Finished difference Result 501 states and 805 transitions. [2023-12-25 22:16:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:16:33,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-25 22:16:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:33,185 INFO L225 Difference]: With dead ends: 501 [2023-12-25 22:16:33,185 INFO L226 Difference]: Without dead ends: 381 [2023-12-25 22:16:33,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:16:33,187 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 761 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:33,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1297 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:16:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-25 22:16:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 231. [2023-12-25 22:16:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.5956521739130434) internal successors, (367), 230 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 367 transitions. [2023-12-25 22:16:33,193 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 367 transitions. Word has length 109 [2023-12-25 22:16:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:33,193 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 367 transitions. [2023-12-25 22:16:33,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 367 transitions. [2023-12-25 22:16:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-25 22:16:33,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:33,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:33,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 22:16:33,196 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:33,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:33,197 INFO L85 PathProgramCache]: Analyzing trace with hash 808421244, now seen corresponding path program 1 times [2023-12-25 22:16:33,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:33,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422806899] [2023-12-25 22:16:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:33,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422806899] [2023-12-25 22:16:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422806899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954856075] [2023-12-25 22:16:33,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:16:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:16:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:16:33,578 INFO L87 Difference]: Start difference. First operand 231 states and 367 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:33,649 INFO L93 Difference]: Finished difference Result 484 states and 776 transitions. [2023-12-25 22:16:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:33,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-25 22:16:33,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:33,651 INFO L225 Difference]: With dead ends: 484 [2023-12-25 22:16:33,651 INFO L226 Difference]: Without dead ends: 364 [2023-12-25 22:16:33,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:16:33,653 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 847 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:33,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 806 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-12-25 22:16:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 245. [2023-12-25 22:16:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.5942622950819672) internal successors, (389), 244 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 389 transitions. [2023-12-25 22:16:33,677 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 389 transitions. Word has length 109 [2023-12-25 22:16:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:33,677 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 389 transitions. [2023-12-25 22:16:33,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 389 transitions. [2023-12-25 22:16:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 22:16:33,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:33,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:33,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 22:16:33,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:33,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1293498064, now seen corresponding path program 1 times [2023-12-25 22:16:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:33,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130748848] [2023-12-25 22:16:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:34,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130748848] [2023-12-25 22:16:34,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130748848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:34,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:34,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 22:16:34,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739266825] [2023-12-25 22:16:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:34,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:16:34,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:16:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:16:34,053 INFO L87 Difference]: Start difference. First operand 245 states and 389 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:34,176 INFO L93 Difference]: Finished difference Result 503 states and 806 transitions. [2023-12-25 22:16:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:16:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-25 22:16:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:34,177 INFO L225 Difference]: With dead ends: 503 [2023-12-25 22:16:34,177 INFO L226 Difference]: Without dead ends: 383 [2023-12-25 22:16:34,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:16:34,178 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 693 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:34,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1762 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:16:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-25 22:16:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 248. [2023-12-25 22:16:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.591093117408907) internal successors, (393), 247 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 393 transitions. [2023-12-25 22:16:34,183 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 393 transitions. Word has length 110 [2023-12-25 22:16:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:34,183 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 393 transitions. [2023-12-25 22:16:34,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 393 transitions. [2023-12-25 22:16:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 22:16:34,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:34,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:34,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 22:16:34,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:34,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1716199890, now seen corresponding path program 1 times [2023-12-25 22:16:34,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:34,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337902223] [2023-12-25 22:16:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:34,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:34,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337902223] [2023-12-25 22:16:34,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337902223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:34,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:34,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:16:34,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436782859] [2023-12-25 22:16:34,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:34,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:16:34,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:34,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:16:34,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:16:34,559 INFO L87 Difference]: Start difference. First operand 248 states and 393 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:34,631 INFO L93 Difference]: Finished difference Result 490 states and 779 transitions. [2023-12-25 22:16:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-25 22:16:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:34,633 INFO L225 Difference]: With dead ends: 490 [2023-12-25 22:16:34,633 INFO L226 Difference]: Without dead ends: 336 [2023-12-25 22:16:34,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:16:34,633 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 998 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:34,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 761 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-25 22:16:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 248. [2023-12-25 22:16:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.5870445344129556) internal successors, (392), 247 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 392 transitions. [2023-12-25 22:16:34,639 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 392 transitions. Word has length 110 [2023-12-25 22:16:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:34,639 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 392 transitions. [2023-12-25 22:16:34,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 392 transitions. [2023-12-25 22:16:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 22:16:34,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:34,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:34,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 22:16:34,640 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:34,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:34,641 INFO L85 PathProgramCache]: Analyzing trace with hash 818806612, now seen corresponding path program 1 times [2023-12-25 22:16:34,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:34,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718520363] [2023-12-25 22:16:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:34,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 22:16:35,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718520363] [2023-12-25 22:16:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718520363] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:16:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109011221] [2023-12-25 22:16:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:35,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:16:35,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:16:35,531 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) [2023-12-25 22:16:35,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 22:16:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:35,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-25 22:16:35,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:16:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:36,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:16:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109011221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:16:36,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:16:36,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 13] total 30 [2023-12-25 22:16:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634506367] [2023-12-25 22:16:36,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:16:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 22:16:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 22:16:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2023-12-25 22:16:36,871 INFO L87 Difference]: Start difference. First operand 248 states and 392 transitions. Second operand has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:37,719 INFO L93 Difference]: Finished difference Result 1104 states and 1761 transitions. [2023-12-25 22:16:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 22:16:37,720 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 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 110 [2023-12-25 22:16:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:37,723 INFO L225 Difference]: With dead ends: 1104 [2023-12-25 22:16:37,723 INFO L226 Difference]: Without dead ends: 896 [2023-12-25 22:16:37,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=490, Invalid=2060, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 22:16:37,725 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 6996 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6996 SdHoareTripleChecker+Valid, 3959 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:37,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6996 Valid, 3959 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 22:16:37,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-12-25 22:16:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 450. [2023-12-25 22:16:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.5835189309576838) internal successors, (711), 449 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 711 transitions. [2023-12-25 22:16:37,756 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 711 transitions. Word has length 110 [2023-12-25 22:16:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:37,756 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 711 transitions. [2023-12-25 22:16:37,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 711 transitions. [2023-12-25 22:16:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-25 22:16:37,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:37,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:37,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 22:16:37,964 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,SelfDestructingSolverStorable11 [2023-12-25 22:16:37,964 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:37,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1685045856, now seen corresponding path program 1 times [2023-12-25 22:16:37,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:37,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924631912] [2023-12-25 22:16:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:37,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:38,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:38,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924631912] [2023-12-25 22:16:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924631912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:38,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:38,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:16:38,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203500472] [2023-12-25 22:16:38,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:38,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:16:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:16:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:16:38,185 INFO L87 Difference]: Start difference. First operand 450 states and 711 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:38,230 INFO L93 Difference]: Finished difference Result 717 states and 1127 transitions. [2023-12-25 22:16:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:38,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-25 22:16:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:38,232 INFO L225 Difference]: With dead ends: 717 [2023-12-25 22:16:38,232 INFO L226 Difference]: Without dead ends: 507 [2023-12-25 22:16:38,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:16:38,233 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 749 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:38,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 688 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-12-25 22:16:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 448. [2023-12-25 22:16:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.5794183445190157) internal successors, (706), 447 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 706 transitions. [2023-12-25 22:16:38,241 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 706 transitions. Word has length 111 [2023-12-25 22:16:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:38,242 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 706 transitions. [2023-12-25 22:16:38,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:38,242 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 706 transitions. [2023-12-25 22:16:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-25 22:16:38,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:38,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:38,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 22:16:38,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:38,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2056728442, now seen corresponding path program 1 times [2023-12-25 22:16:38,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:38,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797423735] [2023-12-25 22:16:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:38,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:38,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797423735] [2023-12-25 22:16:38,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797423735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:38,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:38,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:16:38,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862536950] [2023-12-25 22:16:38,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:38,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:16:38,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:38,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:16:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:16:38,452 INFO L87 Difference]: Start difference. First operand 448 states and 706 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:38,505 INFO L93 Difference]: Finished difference Result 591 states and 933 transitions. [2023-12-25 22:16:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:16:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-25 22:16:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:38,506 INFO L225 Difference]: With dead ends: 591 [2023-12-25 22:16:38,507 INFO L226 Difference]: Without dead ends: 380 [2023-12-25 22:16:38,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:16:38,507 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 721 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:38,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 910 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:38,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-25 22:16:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 357. [2023-12-25 22:16:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5870786516853932) internal successors, (565), 356 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 565 transitions. [2023-12-25 22:16:38,515 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 565 transitions. Word has length 111 [2023-12-25 22:16:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:38,516 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 565 transitions. [2023-12-25 22:16:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 565 transitions. [2023-12-25 22:16:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-25 22:16:38,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:38,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 22:16:38,517 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:38,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash -365117743, now seen corresponding path program 1 times [2023-12-25 22:16:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:38,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568317916] [2023-12-25 22:16:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:38,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:40,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:40,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568317916] [2023-12-25 22:16:40,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568317916] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:16:40,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676617127] [2023-12-25 22:16:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:40,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:16:40,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:16:40,638 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) [2023-12-25 22:16:40,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 22:16:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:40,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-25 22:16:40,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:16:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:41,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:16:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:43,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676617127] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:16:43,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:16:43,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 12] total 35 [2023-12-25 22:16:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483779526] [2023-12-25 22:16:43,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:16:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 22:16:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 22:16:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 22:16:43,202 INFO L87 Difference]: Start difference. First operand 357 states and 565 transitions. Second operand has 36 states, 36 states have (on average 15.027777777777779) internal successors, (541), 35 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) [2023-12-25 22:16:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:46,665 INFO L93 Difference]: Finished difference Result 2235 states and 3578 transitions. [2023-12-25 22:16:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-25 22:16:46,673 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 15.027777777777779) internal successors, (541), 35 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) Word has length 188 [2023-12-25 22:16:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:46,681 INFO L225 Difference]: With dead ends: 2235 [2023-12-25 22:16:46,682 INFO L226 Difference]: Without dead ends: 1940 [2023-12-25 22:16:46,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2350 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1225, Invalid=7517, Unknown=0, NotChecked=0, Total=8742 [2023-12-25 22:16:46,687 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 9072 mSDsluCounter, 6342 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9072 SdHoareTripleChecker+Valid, 6740 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:46,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9072 Valid, 6740 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 22:16:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2023-12-25 22:16:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1117. [2023-12-25 22:16:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.57078853046595) internal successors, (1753), 1116 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1753 transitions. [2023-12-25 22:16:46,706 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1753 transitions. Word has length 188 [2023-12-25 22:16:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:46,706 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1753 transitions. [2023-12-25 22:16:46,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 15.027777777777779) internal successors, (541), 35 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) [2023-12-25 22:16:46,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1753 transitions. [2023-12-25 22:16:46,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-25 22:16:46,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:46,709 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:46,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 22:16:46,916 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,SelfDestructingSolverStorable14 [2023-12-25 22:16:46,916 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:46,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:46,917 INFO L85 PathProgramCache]: Analyzing trace with hash 153469965, now seen corresponding path program 1 times [2023-12-25 22:16:46,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:46,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752600838] [2023-12-25 22:16:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:46,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:48,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:48,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752600838] [2023-12-25 22:16:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752600838] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:16:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629201416] [2023-12-25 22:16:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:48,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:16:48,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:16:48,816 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) [2023-12-25 22:16:48,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 22:16:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:49,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-25 22:16:49,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:16:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-25 22:16:49,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:16:49,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629201416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:49,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:16:49,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-12-25 22:16:49,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286184410] [2023-12-25 22:16:49,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:49,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:16:49,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:49,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:16:49,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-25 22:16:49,196 INFO L87 Difference]: Start difference. First operand 1117 states and 1753 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 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) [2023-12-25 22:16:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:49,422 INFO L93 Difference]: Finished difference Result 2131 states and 3387 transitions. [2023-12-25 22:16:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 22:16:49,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 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 190 [2023-12-25 22:16:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:49,426 INFO L225 Difference]: With dead ends: 2131 [2023-12-25 22:16:49,426 INFO L226 Difference]: Without dead ends: 1736 [2023-12-25 22:16:49,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 190 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-25 22:16:49,427 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 422 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:49,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1617 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:16:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2023-12-25 22:16:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1177. [2023-12-25 22:16:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.5654761904761905) internal successors, (1841), 1176 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1841 transitions. [2023-12-25 22:16:49,446 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1841 transitions. Word has length 190 [2023-12-25 22:16:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:49,447 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1841 transitions. [2023-12-25 22:16:49,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 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) [2023-12-25 22:16:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1841 transitions. [2023-12-25 22:16:49,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-25 22:16:49,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:49,449 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:49,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-25 22:16:49,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:16:49,655 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:49,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash -439389237, now seen corresponding path program 1 times [2023-12-25 22:16:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:49,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432683837] [2023-12-25 22:16:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-25 22:16:50,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:50,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432683837] [2023-12-25 22:16:50,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432683837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:50,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:50,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:16:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705801082] [2023-12-25 22:16:50,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:50,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:16:50,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:50,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:16:50,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:16:50,271 INFO L87 Difference]: Start difference. First operand 1177 states and 1841 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:50,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:50,372 INFO L93 Difference]: Finished difference Result 3881 states and 6077 transitions. [2023-12-25 22:16:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:16:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 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 190 [2023-12-25 22:16:50,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:50,380 INFO L225 Difference]: With dead ends: 3881 [2023-12-25 22:16:50,380 INFO L226 Difference]: Without dead ends: 3148 [2023-12-25 22:16:50,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:16:50,383 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 739 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:50,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1316 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:16:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2023-12-25 22:16:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 1195. [2023-12-25 22:16:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 1.559463986599665) internal successors, (1862), 1194 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1862 transitions. [2023-12-25 22:16:50,414 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1862 transitions. Word has length 190 [2023-12-25 22:16:50,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:50,414 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1862 transitions. [2023-12-25 22:16:50,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1862 transitions. [2023-12-25 22:16:50,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-25 22:16:50,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:50,416 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:50,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 22:16:50,417 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:50,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash -50789091, now seen corresponding path program 1 times [2023-12-25 22:16:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:50,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901149827] [2023-12-25 22:16:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 22:16:51,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:51,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901149827] [2023-12-25 22:16:51,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901149827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:51,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:16:51,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:16:51,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870279234] [2023-12-25 22:16:51,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:51,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:16:51,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:51,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:16:51,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:16:51,474 INFO L87 Difference]: Start difference. First operand 1195 states and 1862 transitions. Second operand has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:51,682 INFO L93 Difference]: Finished difference Result 3201 states and 5041 transitions. [2023-12-25 22:16:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 22:16:51,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 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 191 [2023-12-25 22:16:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:51,689 INFO L225 Difference]: With dead ends: 3201 [2023-12-25 22:16:51,689 INFO L226 Difference]: Without dead ends: 2782 [2023-12-25 22:16:51,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-25 22:16:51,691 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 899 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:51,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1602 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:16:51,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2023-12-25 22:16:51,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 1493. [2023-12-25 22:16:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 1.5636729222520107) internal successors, (2333), 1492 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2333 transitions. [2023-12-25 22:16:51,717 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2333 transitions. Word has length 191 [2023-12-25 22:16:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:51,717 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2333 transitions. [2023-12-25 22:16:51,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2333 transitions. [2023-12-25 22:16:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-25 22:16:51,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:51,720 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:51,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 22:16:51,720 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:51,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash -653564733, now seen corresponding path program 1 times [2023-12-25 22:16:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:51,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816807753] [2023-12-25 22:16:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:51,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:53,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:53,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816807753] [2023-12-25 22:16:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816807753] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:16:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625911165] [2023-12-25 22:16:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:53,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:16:53,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:16:53,100 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) [2023-12-25 22:16:53,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 22:16:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:53,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-25 22:16:53,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:16:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 22:16:53,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:16:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625911165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:16:53,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:16:53,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2023-12-25 22:16:53,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104901313] [2023-12-25 22:16:53,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:16:53,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 22:16:53,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 22:16:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-25 22:16:53,592 INFO L87 Difference]: Start difference. First operand 1493 states and 2333 transitions. Second operand has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:53,964 INFO L93 Difference]: Finished difference Result 2239 states and 3526 transitions. [2023-12-25 22:16:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 22:16:53,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 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 191 [2023-12-25 22:16:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:53,969 INFO L225 Difference]: With dead ends: 2239 [2023-12-25 22:16:53,969 INFO L226 Difference]: Without dead ends: 1866 [2023-12-25 22:16:53,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-12-25 22:16:53,971 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 722 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:53,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 2656 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 22:16:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2023-12-25 22:16:54,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1559. [2023-12-25 22:16:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 1.5629011553273426) internal successors, (2435), 1558 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2435 transitions. [2023-12-25 22:16:54,012 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2435 transitions. Word has length 191 [2023-12-25 22:16:54,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:54,012 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2435 transitions. [2023-12-25 22:16:54,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2435 transitions. [2023-12-25 22:16:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-25 22:16:54,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:54,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:54,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 22:16:54,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:16:54,222 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:54,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:54,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1583197185, now seen corresponding path program 1 times [2023-12-25 22:16:54,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:54,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488024040] [2023-12-25 22:16:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:55,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:16:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488024040] [2023-12-25 22:16:55,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488024040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:16:55,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317490773] [2023-12-25 22:16:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:55,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:16:55,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:16:55,721 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) [2023-12-25 22:16:55,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 22:16:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:16:55,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-25 22:16:55,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:16:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:56,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:16:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:16:57,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317490773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:16:57,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:16:57,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 33 [2023-12-25 22:16:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481796575] [2023-12-25 22:16:57,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:16:57,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-25 22:16:57,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:16:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-25 22:16:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 22:16:57,152 INFO L87 Difference]: Start difference. First operand 1559 states and 2435 transitions. Second operand has 34 states, 34 states have (on average 14.823529411764707) internal successors, (504), 33 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:59,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:16:59,202 INFO L93 Difference]: Finished difference Result 4087 states and 6375 transitions. [2023-12-25 22:16:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 22:16:59,202 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 14.823529411764707) internal successors, (504), 33 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-25 22:16:59,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:16:59,208 INFO L225 Difference]: With dead ends: 4087 [2023-12-25 22:16:59,208 INFO L226 Difference]: Without dead ends: 2593 [2023-12-25 22:16:59,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=904, Invalid=4646, Unknown=0, NotChecked=0, Total=5550 [2023-12-25 22:16:59,212 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 5096 mSDsluCounter, 5639 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5096 SdHoareTripleChecker+Valid, 5981 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:16:59,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5096 Valid, 5981 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 22:16:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2023-12-25 22:16:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 1457. [2023-12-25 22:16:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1456 states have (on average 1.54739010989011) internal successors, (2253), 1456 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2253 transitions. [2023-12-25 22:16:59,249 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2253 transitions. Word has length 191 [2023-12-25 22:16:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:16:59,249 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 2253 transitions. [2023-12-25 22:16:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 14.823529411764707) internal successors, (504), 33 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:16:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2253 transitions. [2023-12-25 22:16:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-25 22:16:59,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:16:59,252 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:16:59,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-25 22:16:59,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:16:59,459 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:16:59,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:16:59,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1103973207, now seen corresponding path program 1 times [2023-12-25 22:16:59,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:16:59,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054924264] [2023-12-25 22:16:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:16:59,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:16:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:17:01,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:17:01,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054924264] [2023-12-25 22:17:01,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054924264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:17:01,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466196941] [2023-12-25 22:17:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:01,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:17:01,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:17:01,370 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) [2023-12-25 22:17:01,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 22:17:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:01,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-25 22:17:01,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:17:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:17:02,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:17:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:17:03,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466196941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:17:03,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:17:03,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 13] total 36 [2023-12-25 22:17:03,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787612389] [2023-12-25 22:17:03,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:17:03,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 22:17:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:17:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 22:17:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 22:17:03,170 INFO L87 Difference]: Start difference. First operand 1457 states and 2253 transitions. Second operand has 37 states, 37 states have (on average 14.054054054054054) internal successors, (520), 36 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:17:06,542 INFO L93 Difference]: Finished difference Result 4603 states and 7168 transitions. [2023-12-25 22:17:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-25 22:17:06,543 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 14.054054054054054) internal successors, (520), 36 states have internal predecessors, (520), 0 states have call successors, (0), 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 191 [2023-12-25 22:17:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:17:06,550 INFO L225 Difference]: With dead ends: 4603 [2023-12-25 22:17:06,550 INFO L226 Difference]: Without dead ends: 3235 [2023-12-25 22:17:06,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1399, Invalid=5741, Unknown=0, NotChecked=0, Total=7140 [2023-12-25 22:17:06,569 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 5058 mSDsluCounter, 7723 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5058 SdHoareTripleChecker+Valid, 8520 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 22:17:06,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5058 Valid, 8520 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 22:17:06,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2023-12-25 22:17:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1593. [2023-12-25 22:17:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1592 states have (on average 1.5489949748743719) internal successors, (2466), 1592 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2466 transitions. [2023-12-25 22:17:06,603 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2466 transitions. Word has length 191 [2023-12-25 22:17:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:17:06,603 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2466 transitions. [2023-12-25 22:17:06,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 14.054054054054054) internal successors, (520), 36 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2466 transitions. [2023-12-25 22:17:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-25 22:17:06,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:17:06,607 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:17:06,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 22:17:06,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:17:06,814 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:17:06,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:17:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2040432783, now seen corresponding path program 1 times [2023-12-25 22:17:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:17:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553155150] [2023-12-25 22:17:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:17:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 22:17:08,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:17:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553155150] [2023-12-25 22:17:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553155150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:17:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736800697] [2023-12-25 22:17:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:08,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:17:08,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:17:08,234 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) [2023-12-25 22:17:08,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 22:17:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:08,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 134 conjunts are in the unsatisfiable core [2023-12-25 22:17:08,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:17:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 41 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:17:09,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:17:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:17:10,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736800697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:17:10,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:17:10,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19, 23] total 50 [2023-12-25 22:17:10,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838879653] [2023-12-25 22:17:10,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:17:10,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-25 22:17:10,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:17:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-25 22:17:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 22:17:10,868 INFO L87 Difference]: Start difference. First operand 1593 states and 2466 transitions. Second operand has 51 states, 51 states have (on average 10.372549019607844) internal successors, (529), 50 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:46,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:17:46,868 INFO L93 Difference]: Finished difference Result 29194 states and 46046 transitions. [2023-12-25 22:17:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 489 states. [2023-12-25 22:17:46,868 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 10.372549019607844) internal successors, (529), 50 states have internal predecessors, (529), 0 states have call successors, (0), 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 192 [2023-12-25 22:17:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:17:46,950 INFO L225 Difference]: With dead ends: 29194 [2023-12-25 22:17:46,950 INFO L226 Difference]: Without dead ends: 28524 [2023-12-25 22:17:46,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 535 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126065 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=23246, Invalid=264586, Unknown=0, NotChecked=0, Total=287832 [2023-12-25 22:17:46,995 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 20663 mSDsluCounter, 30133 mSDsCounter, 0 mSdLazyCounter, 9973 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20663 SdHoareTripleChecker+Valid, 31363 SdHoareTripleChecker+Invalid, 10078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 9973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:17:46,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20663 Valid, 31363 Invalid, 10078 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 9973 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-25 22:17:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28524 states. [2023-12-25 22:17:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28524 to 2820. [2023-12-25 22:17:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2819 states have (on average 1.540971975877971) internal successors, (4344), 2819 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 4344 transitions. [2023-12-25 22:17:47,251 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 4344 transitions. Word has length 192 [2023-12-25 22:17:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:17:47,251 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 4344 transitions. [2023-12-25 22:17:47,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 10.372549019607844) internal successors, (529), 50 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 4344 transitions. [2023-12-25 22:17:47,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-25 22:17:47,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:17:47,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:17:47,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 22:17:47,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:17:47,462 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:17:47,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:17:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1181681103, now seen corresponding path program 1 times [2023-12-25 22:17:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:17:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774503267] [2023-12-25 22:17:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:17:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-25 22:17:48,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:17:48,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774503267] [2023-12-25 22:17:48,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774503267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:17:48,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:17:48,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 22:17:48,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128325802] [2023-12-25 22:17:48,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:17:48,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 22:17:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:17:48,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 22:17:48,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:17:48,154 INFO L87 Difference]: Start difference. First operand 2820 states and 4344 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:17:48,346 INFO L93 Difference]: Finished difference Result 6981 states and 10829 transitions. [2023-12-25 22:17:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:17:48,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 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 192 [2023-12-25 22:17:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:17:48,375 INFO L225 Difference]: With dead ends: 6981 [2023-12-25 22:17:48,375 INFO L226 Difference]: Without dead ends: 5761 [2023-12-25 22:17:48,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-25 22:17:48,377 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 797 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:17:48,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 2452 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:17:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2023-12-25 22:17:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 2824. [2023-12-25 22:17:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2823 states have (on average 1.540913921360255) internal successors, (4350), 2823 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 4350 transitions. [2023-12-25 22:17:48,551 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 4350 transitions. Word has length 192 [2023-12-25 22:17:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:17:48,552 INFO L495 AbstractCegarLoop]: Abstraction has 2824 states and 4350 transitions. [2023-12-25 22:17:48,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 4350 transitions. [2023-12-25 22:17:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-25 22:17:48,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:17:48,555 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:17:48,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-25 22:17:48,555 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:17:48,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:17:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1147299439, now seen corresponding path program 1 times [2023-12-25 22:17:48,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:17:48,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012711060] [2023-12-25 22:17:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:48,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:17:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-25 22:17:49,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:17:49,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012711060] [2023-12-25 22:17:49,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012711060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:17:49,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:17:49,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 22:17:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386197688] [2023-12-25 22:17:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:17:49,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 22:17:49,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:17:49,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 22:17:49,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 22:17:49,259 INFO L87 Difference]: Start difference. First operand 2824 states and 4350 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:17:49,347 INFO L93 Difference]: Finished difference Result 6008 states and 9312 transitions. [2023-12-25 22:17:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 22:17:49,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 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 192 [2023-12-25 22:17:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:17:49,354 INFO L225 Difference]: With dead ends: 6008 [2023-12-25 22:17:49,354 INFO L226 Difference]: Without dead ends: 4788 [2023-12-25 22:17:49,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:17:49,356 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 563 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:17:49,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1164 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:17:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2023-12-25 22:17:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 2822. [2023-12-25 22:17:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 2821 states have (on average 1.5409429280397022) internal successors, (4347), 2821 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 4347 transitions. [2023-12-25 22:17:49,470 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 4347 transitions. Word has length 192 [2023-12-25 22:17:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:17:49,471 INFO L495 AbstractCegarLoop]: Abstraction has 2822 states and 4347 transitions. [2023-12-25 22:17:49,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 4347 transitions. [2023-12-25 22:17:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-25 22:17:49,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:17:49,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:17:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-25 22:17:49,475 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:17:49,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:17:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1382904235, now seen corresponding path program 1 times [2023-12-25 22:17:49,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:17:49,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583389821] [2023-12-25 22:17:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:49,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:17:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 44 proven. 35 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 22:17:50,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:17:50,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583389821] [2023-12-25 22:17:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583389821] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:17:50,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496291995] [2023-12-25 22:17:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:50,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:17:50,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:17:50,480 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) [2023-12-25 22:17:50,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 22:17:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:50,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-25 22:17:50,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:17:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:17:51,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:17:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 83 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:17:51,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496291995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:17:51,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:17:51,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 15] total 32 [2023-12-25 22:17:51,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119264480] [2023-12-25 22:17:51,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:17:51,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-25 22:17:51,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:17:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-25 22:17:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2023-12-25 22:17:51,997 INFO L87 Difference]: Start difference. First operand 2822 states and 4347 transitions. Second operand has 32 states, 32 states have (on average 16.375) internal successors, (524), 32 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:17:56,593 INFO L93 Difference]: Finished difference Result 18817 states and 29287 transitions. [2023-12-25 22:17:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-25 22:17:56,593 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 16.375) internal successors, (524), 32 states have internal predecessors, (524), 0 states have call successors, (0), 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 193 [2023-12-25 22:17:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:17:56,613 INFO L225 Difference]: With dead ends: 18817 [2023-12-25 22:17:56,614 INFO L226 Difference]: Without dead ends: 16462 [2023-12-25 22:17:56,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8167 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3600, Invalid=19656, Unknown=0, NotChecked=0, Total=23256 [2023-12-25 22:17:56,622 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 8218 mSDsluCounter, 15867 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8218 SdHoareTripleChecker+Valid, 17011 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 22:17:56,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8218 Valid, 17011 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 22:17:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16462 states. [2023-12-25 22:17:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16462 to 3969. [2023-12-25 22:17:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3969 states, 3968 states have (on average 1.5461189516129032) internal successors, (6135), 3968 states have internal predecessors, (6135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 6135 transitions. [2023-12-25 22:17:56,727 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 6135 transitions. Word has length 193 [2023-12-25 22:17:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:17:56,728 INFO L495 AbstractCegarLoop]: Abstraction has 3969 states and 6135 transitions. [2023-12-25 22:17:56,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.375) internal successors, (524), 32 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:17:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 6135 transitions. [2023-12-25 22:17:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-25 22:17:56,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:17:56,733 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-25 22:17:56,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 22:17:56,941 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,SelfDestructingSolverStorable24 [2023-12-25 22:17:56,941 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:17:56,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:17:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash 223474678, now seen corresponding path program 1 times [2023-12-25 22:17:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:17:56,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614243029] [2023-12-25 22:17:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:56,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:17:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 144 proven. 30 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-25 22:17:59,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:17:59,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614243029] [2023-12-25 22:17:59,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614243029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:17:59,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311466184] [2023-12-25 22:17:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:17:59,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:17:59,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:17:59,602 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) [2023-12-25 22:17:59,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 22:17:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:17:59,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-25 22:17:59,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:18:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-25 22:18:00,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:18:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311466184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:18:00,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:18:00,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 23 [2023-12-25 22:18:00,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208937516] [2023-12-25 22:18:00,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:18:00,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 22:18:00,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:18:00,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 22:18:00,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2023-12-25 22:18:00,137 INFO L87 Difference]: Start difference. First operand 3969 states and 6135 transitions. Second operand has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:18:00,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:18:00,908 INFO L93 Difference]: Finished difference Result 12063 states and 18833 transitions. [2023-12-25 22:18:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 22:18:00,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 0 states have call successors, (0), 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 271 [2023-12-25 22:18:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:18:00,927 INFO L225 Difference]: With dead ends: 12063 [2023-12-25 22:18:00,927 INFO L226 Difference]: Without dead ends: 8835 [2023-12-25 22:18:00,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=1336, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 22:18:00,931 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 580 mSDsluCounter, 3524 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:18:00,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 3947 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 22:18:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8835 states. [2023-12-25 22:18:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8835 to 4345. [2023-12-25 22:18:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4344 states have (on average 1.5453499079189688) internal successors, (6713), 4344 states have internal predecessors, (6713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:18:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 6713 transitions. [2023-12-25 22:18:01,028 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 6713 transitions. Word has length 271 [2023-12-25 22:18:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:18:01,028 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 6713 transitions. [2023-12-25 22:18:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:18:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 6713 transitions. [2023-12-25 22:18:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-25 22:18:01,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:18:01,033 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-25 22:18:01,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 22:18:01,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-25 22:18:01,242 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:18:01,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:18:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1907876044, now seen corresponding path program 1 times [2023-12-25 22:18:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:18:01,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769755912] [2023-12-25 22:18:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:18:01,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:18:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:18:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 144 proven. 30 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-25 22:18:04,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:18:04,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769755912] [2023-12-25 22:18:04,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769755912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:18:04,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699552453] [2023-12-25 22:18:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:18:04,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:18:04,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:18:04,033 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) [2023-12-25 22:18:04,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 22:18:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:18:04,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-25 22:18:04,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:18:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-25 22:18:04,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:18:04,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699552453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:18:04,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:18:04,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2023-12-25 22:18:04,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51138060] [2023-12-25 22:18:04,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:18:04,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 22:18:04,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:18:04,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 22:18:04,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2023-12-25 22:18:04,546 INFO L87 Difference]: Start difference. First operand 4345 states and 6713 transitions. Second operand has 11 states, 11 states have (on average 19.09090909090909) internal successors, (210), 11 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:18:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:18:05,275 INFO L93 Difference]: Finished difference Result 11283 states and 17609 transitions. [2023-12-25 22:18:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 22:18:05,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.09090909090909) internal successors, (210), 11 states have internal predecessors, (210), 0 states have call successors, (0), 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 271 [2023-12-25 22:18:05,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:18:05,291 INFO L225 Difference]: With dead ends: 11283 [2023-12-25 22:18:05,291 INFO L226 Difference]: Without dead ends: 8611 [2023-12-25 22:18:05,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=1147, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 22:18:05,295 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 519 mSDsluCounter, 3143 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 3566 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 22:18:05,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 3566 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 22:18:05,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8611 states. [2023-12-25 22:18:05,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8611 to 4523. [2023-12-25 22:18:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4523 states, 4522 states have (on average 1.5459973463069439) internal successors, (6991), 4522 states have internal predecessors, (6991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:18:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 6991 transitions. [2023-12-25 22:18:05,516 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 6991 transitions. Word has length 271 [2023-12-25 22:18:05,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:18:05,516 INFO L495 AbstractCegarLoop]: Abstraction has 4523 states and 6991 transitions. [2023-12-25 22:18:05,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.09090909090909) internal successors, (210), 11 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:18:05,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 6991 transitions. [2023-12-25 22:18:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-25 22:18:05,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:18:05,521 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-25 22:18:05,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 22:18:05,730 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,SelfDestructingSolverStorable26 [2023-12-25 22:18:05,730 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:18:05,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:18:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1113215906, now seen corresponding path program 1 times [2023-12-25 22:18:05,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:18:05,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445486250] [2023-12-25 22:18:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:18:05,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:18:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:18:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 189 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:18:09,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:18:09,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445486250] [2023-12-25 22:18:09,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445486250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:18:09,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197856498] [2023-12-25 22:18:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:18:09,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:18:09,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:18:09,104 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) [2023-12-25 22:18:09,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 22:18:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:18:09,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 154 conjunts are in the unsatisfiable core [2023-12-25 22:18:09,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:18:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 134 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:18:11,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:18:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 100 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:18:13,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197856498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:18:13,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:18:13,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25, 26] total 64 [2023-12-25 22:18:13,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075984030] [2023-12-25 22:18:13,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:18:13,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-25 22:18:13,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:18:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-25 22:18:13,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=3808, Unknown=0, NotChecked=0, Total=4160 [2023-12-25 22:18:13,528 INFO L87 Difference]: Start difference. First operand 4523 states and 6991 transitions. Second operand has 65 states, 65 states have (on average 11.430769230769231) internal successors, (743), 64 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:19:56,743 INFO L93 Difference]: Finished difference Result 204388 states and 317881 transitions. [2023-12-25 22:19:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 875 states. [2023-12-25 22:19:56,745 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 11.430769230769231) internal successors, (743), 64 states have internal predecessors, (743), 0 states have call successors, (0), 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 271 [2023-12-25 22:19:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:19:56,964 INFO L225 Difference]: With dead ends: 204388 [2023-12-25 22:19:56,965 INFO L226 Difference]: Without dead ends: 200198 [2023-12-25 22:19:57,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1430 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 933 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415880 ImplicationChecksByTransitivity, 89.3s TimeCoverageRelationStatistics Valid=72851, Invalid=800439, Unknown=0, NotChecked=0, Total=873290 [2023-12-25 22:19:57,032 INFO L413 NwaCegarLoop]: 1095 mSDtfsCounter, 75285 mSDsluCounter, 49629 mSDsCounter, 0 mSdLazyCounter, 11815 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75285 SdHoareTripleChecker+Valid, 50724 SdHoareTripleChecker+Invalid, 12613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 11815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:19:57,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75285 Valid, 50724 Invalid, 12613 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [798 Valid, 11815 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-25 22:19:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200198 states. [2023-12-25 22:19:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200198 to 24938. [2023-12-25 22:19:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24938 states, 24937 states have (on average 1.547178890804828) internal successors, (38582), 24937 states have internal predecessors, (38582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24938 states to 24938 states and 38582 transitions. [2023-12-25 22:19:58,678 INFO L78 Accepts]: Start accepts. Automaton has 24938 states and 38582 transitions. Word has length 271 [2023-12-25 22:19:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:19:58,679 INFO L495 AbstractCegarLoop]: Abstraction has 24938 states and 38582 transitions. [2023-12-25 22:19:58,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 11.430769230769231) internal successors, (743), 64 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:19:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 24938 states and 38582 transitions. [2023-12-25 22:19:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-25 22:19:58,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:19:58,700 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-25 22:19:58,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 22:19:58,908 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,SelfDestructingSolverStorable27 [2023-12-25 22:19:58,909 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:19:58,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:19:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1562232864, now seen corresponding path program 1 times [2023-12-25 22:19:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:19:58,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113520981] [2023-12-25 22:19:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:19:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:19:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 150 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113520981] [2023-12-25 22:20:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113520981] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:20:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343822888] [2023-12-25 22:20:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:03,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:20:03,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:20:03,232 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) [2023-12-25 22:20:03,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 22:20:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:03,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-25 22:20:03,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:20:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 168 proven. 46 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-25 22:20:04,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:20:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 170 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-25 22:20:04,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343822888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:20:04,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:20:04,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 12] total 41 [2023-12-25 22:20:04,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614653603] [2023-12-25 22:20:04,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:20:04,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-25 22:20:04,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:04,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-25 22:20:04,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1578, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 22:20:04,989 INFO L87 Difference]: Start difference. First operand 24938 states and 38582 transitions. Second operand has 42 states, 42 states have (on average 15.880952380952381) internal successors, (667), 41 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:20:11,867 INFO L93 Difference]: Finished difference Result 130239 states and 202646 transitions. [2023-12-25 22:20:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-25 22:20:11,867 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 15.880952380952381) internal successors, (667), 41 states have internal predecessors, (667), 0 states have call successors, (0), 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 271 [2023-12-25 22:20:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:20:11,978 INFO L225 Difference]: With dead ends: 130239 [2023-12-25 22:20:11,978 INFO L226 Difference]: Without dead ends: 108404 [2023-12-25 22:20:12,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 522 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4840 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2719, Invalid=15371, Unknown=0, NotChecked=0, Total=18090 [2023-12-25 22:20:12,002 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 10457 mSDsluCounter, 17508 mSDsCounter, 0 mSdLazyCounter, 3449 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10457 SdHoareTripleChecker+Valid, 18212 SdHoareTripleChecker+Invalid, 3509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 22:20:12,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10457 Valid, 18212 Invalid, 3509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3449 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 22:20:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108404 states. [2023-12-25 22:20:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108404 to 37326. [2023-12-25 22:20:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37326 states, 37325 states have (on average 1.5479169457468185) internal successors, (57776), 37325 states have internal predecessors, (57776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37326 states to 37326 states and 57776 transitions. [2023-12-25 22:20:13,128 INFO L78 Accepts]: Start accepts. Automaton has 37326 states and 57776 transitions. Word has length 271 [2023-12-25 22:20:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:20:13,128 INFO L495 AbstractCegarLoop]: Abstraction has 37326 states and 57776 transitions. [2023-12-25 22:20:13,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 15.880952380952381) internal successors, (667), 41 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 22:20:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 37326 states and 57776 transitions. [2023-12-25 22:20:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-25 22:20:13,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:20:13,164 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:20:13,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 22:20:13,373 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,SelfDestructingSolverStorable28 [2023-12-25 22:20:13,373 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:20:13,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:20:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1303928376, now seen corresponding path program 1 times [2023-12-25 22:20:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:20:13,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955955131] [2023-12-25 22:20:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:20:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 144 proven. 30 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-25 22:20:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:20:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955955131] [2023-12-25 22:20:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955955131] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 22:20:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752768873] [2023-12-25 22:20:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:20:16,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:20:16,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:20:16,349 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) [2023-12-25 22:20:16,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 22:20:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:20:16,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 209 conjunts are in the unsatisfiable core [2023-12-25 22:20:16,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:20:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 166 proven. 73 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 22:20:17,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:20:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 117 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:20:20,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752768873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:20:20,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 22:20:20,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29, 33] total 72 [2023-12-25 22:20:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060522234] [2023-12-25 22:20:20,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 22:20:20,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-25 22:20:20,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:20:20,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-25 22:20:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=4799, Unknown=0, NotChecked=0, Total=5256 [2023-12-25 22:20:20,360 INFO L87 Difference]: Start difference. First operand 37326 states and 57776 transitions. Second operand has 73 states, 73 states have (on average 9.136986301369863) internal successors, (667), 72 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)