/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:05:13,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:05:13,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:05:13,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:05:13,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:05:13,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:05:13,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:05:13,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:05:13,503 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:05:13,506 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:05:13,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:05:13,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:05:13,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:05:13,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:05:13,508 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:05:13,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:05:13,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:05:13,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:05:13,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:05:13,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:05:13,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:05:13,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:05:13,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:05:13,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:05:13,511 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:05:13,511 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:05:13,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:05:13,512 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:05:13,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:05:13,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:05:13,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:05:13,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:05:13,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:05:13,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:05:13,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:05:13,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:05:13,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:05:13,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:05:13,514 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:05:13,514 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:05:13,514 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:05:13,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:05:13,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:05:13,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:05:13,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:05:13,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:05:13,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:05:13,740 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:05:13,740 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:05:13,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label15.c [2023-12-15 19:05:14,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:05:15,053 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:05:15,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label15.c [2023-12-15 19:05:15,085 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60202a6d/f26eda62342b4d138dda2541c0b2685e/FLAGe82b96306 [2023-12-15 19:05:15,104 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60202a6d/f26eda62342b4d138dda2541c0b2685e [2023-12-15 19:05:15,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:05:15,107 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:05:15,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:05:15,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:05:15,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:05:15,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:15,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730429d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15, skipping insertion in model container [2023-12-15 19:05:15,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:15,175 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:05:15,372 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label15.c[2501,2514] [2023-12-15 19:05:15,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:05:15,700 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:05:15,721 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label15.c[2501,2514] [2023-12-15 19:05:15,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:05:15,905 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:05:15,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15 WrapperNode [2023-12-15 19:05:15,905 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:05:15,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:05:15,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:05:15,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:05:15,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:15,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,022 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2023-12-15 19:05:16,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:05:16,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:05:16,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:05:16,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:05:16,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,136 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]. [2023-12-15 19:05:16,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:05:16,277 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:05:16,277 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:05:16,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:05:16,278 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (1/1) ... [2023-12-15 19:05:16,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:05:16,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:05:16,337 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) [2023-12-15 19:05:16,355 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 [2023-12-15 19:05:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:05:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:05:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:05:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:05:16,419 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:05:16,421 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:05:18,051 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:05:18,085 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:05:18,085 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:05:18,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:05:18 BoogieIcfgContainer [2023-12-15 19:05:18,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:05:18,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:05:18,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:05:18,090 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:05:18,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:05:15" (1/3) ... [2023-12-15 19:05:18,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcd14cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:05:18, skipping insertion in model container [2023-12-15 19:05:18,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:05:15" (2/3) ... [2023-12-15 19:05:18,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcd14cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:05:18, skipping insertion in model container [2023-12-15 19:05:18,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:05:18" (3/3) ... [2023-12-15 19:05:18,092 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label15.c [2023-12-15 19:05:18,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:05:18,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:05:18,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:05:18,149 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;@709343e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:05:18,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:05:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 19:05:18,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:18,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:18,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:18,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 348224313, now seen corresponding path program 1 times [2023-12-15 19:05:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524155660] [2023-12-15 19:05:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:05:18,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524155660] [2023-12-15 19:05:18,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524155660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:18,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:18,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:05:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471512993] [2023-12-15 19:05:18,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:18,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:05:18,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:18,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:05:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:05:18,310 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:18,357 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2023-12-15 19:05:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:05:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 19:05:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:18,368 INFO L225 Difference]: With dead ends: 667 [2023-12-15 19:05:18,369 INFO L226 Difference]: Without dead ends: 332 [2023-12-15 19:05:18,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:05:18,374 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:18,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:05:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-15 19:05:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-12-15 19:05:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2023-12-15 19:05:18,417 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 21 [2023-12-15 19:05:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:18,418 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2023-12-15 19:05:18,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2023-12-15 19:05:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 19:05:18,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:18,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:18,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:05:18,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:18,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1265979183, now seen corresponding path program 1 times [2023-12-15 19:05:18,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:18,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514383353] [2023-12-15 19:05:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:05:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:18,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514383353] [2023-12-15 19:05:18,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514383353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:18,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:18,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:05:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658612966] [2023-12-15 19:05:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:18,511 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:19,955 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2023-12-15 19:05:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:19,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 19:05:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:19,962 INFO L225 Difference]: With dead ends: 992 [2023-12-15 19:05:19,962 INFO L226 Difference]: Without dead ends: 661 [2023-12-15 19:05:19,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:19,964 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 316 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:19,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 37 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:05:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-15 19:05:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-12-15 19:05:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.7651515151515151) internal successors, (1165), 660 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1165 transitions. [2023-12-15 19:05:19,990 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1165 transitions. Word has length 21 [2023-12-15 19:05:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:19,990 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1165 transitions. [2023-12-15 19:05:19,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1165 transitions. [2023-12-15 19:05:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 19:05:19,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:19,992 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:05:19,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:05:19,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:19,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:19,993 INFO L85 PathProgramCache]: Analyzing trace with hash 642913803, now seen corresponding path program 1 times [2023-12-15 19:05:19,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:19,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158925938] [2023-12-15 19:05:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:19,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:05:20,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:20,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158925938] [2023-12-15 19:05:20,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158925938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:20,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:20,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:05:20,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267111706] [2023-12-15 19:05:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:20,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:20,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:20,109 INFO L87 Difference]: Start difference. First operand 661 states and 1165 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:21,163 INFO L93 Difference]: Finished difference Result 1979 states and 3492 transitions. [2023-12-15 19:05:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:21,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 19:05:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:21,172 INFO L225 Difference]: With dead ends: 1979 [2023-12-15 19:05:21,172 INFO L226 Difference]: Without dead ends: 1319 [2023-12-15 19:05:21,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:21,176 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 344 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:21,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 75 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:05:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-12-15 19:05:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2023-12-15 19:05:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.6661608497723823) internal successors, (2196), 1318 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2196 transitions. [2023-12-15 19:05:21,211 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2196 transitions. Word has length 86 [2023-12-15 19:05:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:21,211 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 2196 transitions. [2023-12-15 19:05:21,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2196 transitions. [2023-12-15 19:05:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 19:05:21,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:21,213 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:05:21,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:05:21,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:21,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1118469655, now seen corresponding path program 1 times [2023-12-15 19:05:21,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:21,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605305072] [2023-12-15 19:05:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:21,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:05:21,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:21,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605305072] [2023-12-15 19:05:21,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605305072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:21,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:21,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:05:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083346736] [2023-12-15 19:05:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:21,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:21,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:21,375 INFO L87 Difference]: Start difference. First operand 1319 states and 2196 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:22,606 INFO L93 Difference]: Finished difference Result 3624 states and 6016 transitions. [2023-12-15 19:05:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-15 19:05:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:22,613 INFO L225 Difference]: With dead ends: 3624 [2023-12-15 19:05:22,613 INFO L226 Difference]: Without dead ends: 2306 [2023-12-15 19:05:22,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:22,616 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 282 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:22,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 118 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:05:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-12-15 19:05:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2023-12-15 19:05:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 1.5926247288503255) internal successors, (3671), 2305 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3671 transitions. [2023-12-15 19:05:22,651 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3671 transitions. Word has length 89 [2023-12-15 19:05:22,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:22,652 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 3671 transitions. [2023-12-15 19:05:22,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3671 transitions. [2023-12-15 19:05:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 19:05:22,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:22,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:22,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:05:22,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:22,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash -909671433, now seen corresponding path program 1 times [2023-12-15 19:05:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:22,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175430531] [2023-12-15 19:05:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:05:22,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175430531] [2023-12-15 19:05:22,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175430531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:22,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:22,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:05:22,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503628004] [2023-12-15 19:05:22,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:22,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:05:22,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:05:22,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:05:22,827 INFO L87 Difference]: Start difference. First operand 2306 states and 3671 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:24,652 INFO L93 Difference]: Finished difference Result 6256 states and 9780 transitions. [2023-12-15 19:05:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:05:24,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-15 19:05:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:24,673 INFO L225 Difference]: With dead ends: 6256 [2023-12-15 19:05:24,673 INFO L226 Difference]: Without dead ends: 3951 [2023-12-15 19:05:24,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:05:24,677 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 884 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:24,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 190 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:05:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-15 19:05:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-15 19:05:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.4303797468354431) internal successors, (5650), 3950 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5650 transitions. [2023-12-15 19:05:24,757 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5650 transitions. Word has length 94 [2023-12-15 19:05:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:24,757 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 5650 transitions. [2023-12-15 19:05:24,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5650 transitions. [2023-12-15 19:05:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-15 19:05:24,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:24,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:05:24,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:24,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1771542956, now seen corresponding path program 1 times [2023-12-15 19:05:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:24,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716319863] [2023-12-15 19:05:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-15 19:05:24,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:24,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716319863] [2023-12-15 19:05:24,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716319863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:24,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:24,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:05:24,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630036507] [2023-12-15 19:05:24,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:24,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:24,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:24,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:24,893 INFO L87 Difference]: Start difference. First operand 3951 states and 5650 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:25,952 INFO L93 Difference]: Finished difference Result 10533 states and 15385 transitions. [2023-12-15 19:05:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2023-12-15 19:05:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:25,983 INFO L225 Difference]: With dead ends: 10533 [2023-12-15 19:05:25,983 INFO L226 Difference]: Without dead ends: 6912 [2023-12-15 19:05:25,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:25,991 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 265 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:25,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 221 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:05:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2023-12-15 19:05:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 6912. [2023-12-15 19:05:26,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6912 states, 6911 states have (on average 1.3076255245261177) internal successors, (9037), 6911 states have internal predecessors, (9037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 9037 transitions. [2023-12-15 19:05:26,104 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 9037 transitions. Word has length 108 [2023-12-15 19:05:26,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:26,105 INFO L495 AbstractCegarLoop]: Abstraction has 6912 states and 9037 transitions. [2023-12-15 19:05:26,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 9037 transitions. [2023-12-15 19:05:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-15 19:05:26,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:26,110 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:26,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:05:26,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:26,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1557665642, now seen corresponding path program 1 times [2023-12-15 19:05:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:26,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567180901] [2023-12-15 19:05:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-15 19:05:26,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:26,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567180901] [2023-12-15 19:05:26,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567180901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:26,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:26,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:05:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713102017] [2023-12-15 19:05:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:26,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:26,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:26,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:26,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:26,273 INFO L87 Difference]: Start difference. First operand 6912 states and 9037 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:27,289 INFO L93 Difference]: Finished difference Result 16455 states and 21648 transitions. [2023-12-15 19:05:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:27,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 270 [2023-12-15 19:05:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:27,313 INFO L225 Difference]: With dead ends: 16455 [2023-12-15 19:05:27,313 INFO L226 Difference]: Without dead ends: 9873 [2023-12-15 19:05:27,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:27,322 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:27,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 154 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:05:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9873 states. [2023-12-15 19:05:27,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9873 to 8886. [2023-12-15 19:05:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8886 states, 8885 states have (on average 1.1988745075970737) internal successors, (10652), 8885 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8886 states to 8886 states and 10652 transitions. [2023-12-15 19:05:27,455 INFO L78 Accepts]: Start accepts. Automaton has 8886 states and 10652 transitions. Word has length 270 [2023-12-15 19:05:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:27,456 INFO L495 AbstractCegarLoop]: Abstraction has 8886 states and 10652 transitions. [2023-12-15 19:05:27,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8886 states and 10652 transitions. [2023-12-15 19:05:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-12-15 19:05:27,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:27,462 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:27,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:05:27,462 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:27,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:27,462 INFO L85 PathProgramCache]: Analyzing trace with hash 674896227, now seen corresponding path program 1 times [2023-12-15 19:05:27,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:27,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254090715] [2023-12-15 19:05:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:27,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-15 19:05:28,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254090715] [2023-12-15 19:05:28,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254090715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:28,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:28,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:05:28,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185445509] [2023-12-15 19:05:28,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:28,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:05:28,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:28,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:05:28,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:05:28,003 INFO L87 Difference]: Start difference. First operand 8886 states and 10652 transitions. Second operand has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:29,266 INFO L93 Difference]: Finished difference Result 17032 states and 20510 transitions. [2023-12-15 19:05:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:05:29,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 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 464 [2023-12-15 19:05:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:29,285 INFO L225 Difference]: With dead ends: 17032 [2023-12-15 19:05:29,285 INFO L226 Difference]: Without dead ends: 8557 [2023-12-15 19:05:29,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:05:29,295 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 308 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:29,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 283 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:05:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8557 states. [2023-12-15 19:05:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8557 to 8557. [2023-12-15 19:05:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8557 states, 8556 states have (on average 1.0805282842449744) internal successors, (9245), 8556 states have internal predecessors, (9245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8557 states to 8557 states and 9245 transitions. [2023-12-15 19:05:29,474 INFO L78 Accepts]: Start accepts. Automaton has 8557 states and 9245 transitions. Word has length 464 [2023-12-15 19:05:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:29,475 INFO L495 AbstractCegarLoop]: Abstraction has 8557 states and 9245 transitions. [2023-12-15 19:05:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 8557 states and 9245 transitions. [2023-12-15 19:05:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-15 19:05:29,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:29,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:29,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:05:29,482 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:29,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:29,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1916269499, now seen corresponding path program 1 times [2023-12-15 19:05:29,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:29,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971783778] [2023-12-15 19:05:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-15 19:05:29,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971783778] [2023-12-15 19:05:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971783778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:29,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:05:29,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538327176] [2023-12-15 19:05:29,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:29,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:29,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:29,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:29,828 INFO L87 Difference]: Start difference. First operand 8557 states and 9245 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:30,648 INFO L93 Difference]: Finished difference Result 20074 states and 21837 transitions. [2023-12-15 19:05:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:30,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 492 [2023-12-15 19:05:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:30,671 INFO L225 Difference]: With dead ends: 20074 [2023-12-15 19:05:30,671 INFO L226 Difference]: Without dead ends: 12176 [2023-12-15 19:05:30,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:30,679 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 219 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:30,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 431 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:05:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2023-12-15 19:05:30,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 11189. [2023-12-15 19:05:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11189 states, 11188 states have (on average 1.066589202717197) internal successors, (11933), 11188 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11189 states to 11189 states and 11933 transitions. [2023-12-15 19:05:30,850 INFO L78 Accepts]: Start accepts. Automaton has 11189 states and 11933 transitions. Word has length 492 [2023-12-15 19:05:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:30,851 INFO L495 AbstractCegarLoop]: Abstraction has 11189 states and 11933 transitions. [2023-12-15 19:05:30,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 11189 states and 11933 transitions. [2023-12-15 19:05:30,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-15 19:05:30,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:30,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:30,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:05:30,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:30,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 164247059, now seen corresponding path program 1 times [2023-12-15 19:05:30,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:30,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299087865] [2023-12-15 19:05:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:30,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 19:05:31,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:31,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299087865] [2023-12-15 19:05:31,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299087865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:31,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:31,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:05:31,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054878232] [2023-12-15 19:05:31,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:31,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:31,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:31,186 INFO L87 Difference]: Start difference. First operand 11189 states and 11933 transitions. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:31,982 INFO L93 Difference]: Finished difference Result 25338 states and 27233 transitions. [2023-12-15 19:05:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:31,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 555 [2023-12-15 19:05:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:32,002 INFO L225 Difference]: With dead ends: 25338 [2023-12-15 19:05:32,002 INFO L226 Difference]: Without dead ends: 14479 [2023-12-15 19:05:32,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:32,009 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 176 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:32,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 417 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:05:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2023-12-15 19:05:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 11847. [2023-12-15 19:05:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11847 states, 11846 states have (on average 1.0660138443356406) internal successors, (12628), 11846 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11847 states to 11847 states and 12628 transitions. [2023-12-15 19:05:32,133 INFO L78 Accepts]: Start accepts. Automaton has 11847 states and 12628 transitions. Word has length 555 [2023-12-15 19:05:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:32,133 INFO L495 AbstractCegarLoop]: Abstraction has 11847 states and 12628 transitions. [2023-12-15 19:05:32,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 11847 states and 12628 transitions. [2023-12-15 19:05:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2023-12-15 19:05:32,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:32,144 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:32,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:05:32,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:32,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:32,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1632330790, now seen corresponding path program 1 times [2023-12-15 19:05:32,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:32,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275129907] [2023-12-15 19:05:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:32,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 903 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-15 19:05:32,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:32,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275129907] [2023-12-15 19:05:32,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275129907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:32,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:32,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:05:32,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457932662] [2023-12-15 19:05:32,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:32,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:32,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:32,666 INFO L87 Difference]: Start difference. First operand 11847 states and 12628 transitions. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:33,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:33,454 INFO L93 Difference]: Finished difference Result 25996 states and 27901 transitions. [2023-12-15 19:05:33,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:33,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 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 853 [2023-12-15 19:05:33,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:33,475 INFO L225 Difference]: With dead ends: 25996 [2023-12-15 19:05:33,476 INFO L226 Difference]: Without dead ends: 14479 [2023-12-15 19:05:33,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:33,486 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 193 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:33,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 438 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:05:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2023-12-15 19:05:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 14150. [2023-12-15 19:05:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14149 states have (on average 1.06113506254859) internal successors, (15014), 14149 states have internal predecessors, (15014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 15014 transitions. [2023-12-15 19:05:33,630 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 15014 transitions. Word has length 853 [2023-12-15 19:05:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:33,631 INFO L495 AbstractCegarLoop]: Abstraction has 14150 states and 15014 transitions. [2023-12-15 19:05:33,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 15014 transitions. [2023-12-15 19:05:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2023-12-15 19:05:33,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:33,647 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:33,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:05:33,647 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:33,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1809108736, now seen corresponding path program 1 times [2023-12-15 19:05:33,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:33,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407569478] [2023-12-15 19:05:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:33,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 427 proven. 627 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-15 19:05:34,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:34,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407569478] [2023-12-15 19:05:34,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407569478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:05:34,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857933286] [2023-12-15 19:05:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:34,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:05:34,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:05:34,703 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) [2023-12-15 19:05:34,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:05:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:34,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:05:34,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:05:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2023-12-15 19:05:35,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:05:35,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857933286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:35,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:05:35,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 19:05:35,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976696505] [2023-12-15 19:05:35,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:35,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:35,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:35,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:35,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:05:35,139 INFO L87 Difference]: Start difference. First operand 14150 states and 15014 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 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) [2023-12-15 19:05:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:35,852 INFO L93 Difference]: Finished difference Result 27970 states and 29696 transitions. [2023-12-15 19:05:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:35,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 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) Word has length 878 [2023-12-15 19:05:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:35,870 INFO L225 Difference]: With dead ends: 27970 [2023-12-15 19:05:35,870 INFO L226 Difference]: Without dead ends: 14150 [2023-12-15 19:05:35,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:05:35,884 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 226 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:35,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 374 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:05:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2023-12-15 19:05:36,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 14150. [2023-12-15 19:05:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14149 states have (on average 1.052159163191745) internal successors, (14887), 14149 states have internal predecessors, (14887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 14887 transitions. [2023-12-15 19:05:36,080 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 14887 transitions. Word has length 878 [2023-12-15 19:05:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:36,081 INFO L495 AbstractCegarLoop]: Abstraction has 14150 states and 14887 transitions. [2023-12-15 19:05:36,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 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) [2023-12-15 19:05:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 14887 transitions. [2023-12-15 19:05:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2023-12-15 19:05:36,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:36,100 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:36,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:05:36,312 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 [2023-12-15 19:05:36,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:36,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:36,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1772550878, now seen corresponding path program 1 times [2023-12-15 19:05:36,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:36,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807678680] [2023-12-15 19:05:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:36,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 1165 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-15 19:05:36,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:36,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807678680] [2023-12-15 19:05:36,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807678680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:36,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:36,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:05:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393724896] [2023-12-15 19:05:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:36,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:36,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:36,863 INFO L87 Difference]: Start difference. First operand 14150 states and 14887 transitions. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:37,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:37,660 INFO L93 Difference]: Finished difference Result 29615 states and 31115 transitions. [2023-12-15 19:05:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:37,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 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 1034 [2023-12-15 19:05:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:37,679 INFO L225 Difference]: With dead ends: 29615 [2023-12-15 19:05:37,679 INFO L226 Difference]: Without dead ends: 14150 [2023-12-15 19:05:37,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:37,689 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 182 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:37,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 425 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:05:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2023-12-15 19:05:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 14150. [2023-12-15 19:05:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14149 states have (on average 1.0356915683087144) internal successors, (14654), 14149 states have internal predecessors, (14654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 14654 transitions. [2023-12-15 19:05:37,820 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 14654 transitions. Word has length 1034 [2023-12-15 19:05:37,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:37,821 INFO L495 AbstractCegarLoop]: Abstraction has 14150 states and 14654 transitions. [2023-12-15 19:05:37,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 14654 transitions. [2023-12-15 19:05:37,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1425 [2023-12-15 19:05:37,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:37,852 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-12-15 19:05:37,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 19:05:37,852 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:37,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:37,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2126428145, now seen corresponding path program 1 times [2023-12-15 19:05:37,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:37,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654120061] [2023-12-15 19:05:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3146 backedges. 2327 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2023-12-15 19:05:39,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654120061] [2023-12-15 19:05:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654120061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:39,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:39,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:05:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082315834] [2023-12-15 19:05:39,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:39,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:05:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:05:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:05:39,458 INFO L87 Difference]: Start difference. First operand 14150 states and 14654 transitions. Second operand has 4 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:40,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:40,332 INFO L93 Difference]: Finished difference Result 27981 states and 28987 transitions. [2023-12-15 19:05:40,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:05:40,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 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 1424 [2023-12-15 19:05:40,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:40,350 INFO L225 Difference]: With dead ends: 27981 [2023-12-15 19:05:40,350 INFO L226 Difference]: Without dead ends: 14161 [2023-12-15 19:05:40,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:05:40,358 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 263 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:40,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 439 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:05:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14161 states. [2023-12-15 19:05:40,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14161 to 13821. [2023-12-15 19:05:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13821 states, 13820 states have (on average 1.0357452966714906) internal successors, (14314), 13820 states have internal predecessors, (14314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 14314 transitions. [2023-12-15 19:05:40,526 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 14314 transitions. Word has length 1424 [2023-12-15 19:05:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:40,527 INFO L495 AbstractCegarLoop]: Abstraction has 13821 states and 14314 transitions. [2023-12-15 19:05:40,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 14314 transitions. [2023-12-15 19:05:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1525 [2023-12-15 19:05:40,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:40,553 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:40,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:05:40,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:40,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1100530143, now seen corresponding path program 1 times [2023-12-15 19:05:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:40,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115506962] [2023-12-15 19:05:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4894 backedges. 3113 proven. 0 refuted. 0 times theorem prover too weak. 1781 trivial. 0 not checked. [2023-12-15 19:05:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:41,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115506962] [2023-12-15 19:05:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115506962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:41,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:05:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934573161] [2023-12-15 19:05:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:41,831 INFO L87 Difference]: Start difference. First operand 13821 states and 14314 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:42,557 INFO L93 Difference]: Finished difference Result 27970 states and 28990 transitions. [2023-12-15 19:05:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 1524 [2023-12-15 19:05:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:42,574 INFO L225 Difference]: With dead ends: 27970 [2023-12-15 19:05:42,574 INFO L226 Difference]: Without dead ends: 14479 [2023-12-15 19:05:42,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:42,580 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 224 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:42,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 436 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:05:42,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2023-12-15 19:05:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 14479. [2023-12-15 19:05:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.033637242713082) internal successors, (14965), 14478 states have internal predecessors, (14965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 14965 transitions. [2023-12-15 19:05:42,711 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 14965 transitions. Word has length 1524 [2023-12-15 19:05:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:42,712 INFO L495 AbstractCegarLoop]: Abstraction has 14479 states and 14965 transitions. [2023-12-15 19:05:42,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 14965 transitions. [2023-12-15 19:05:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2023-12-15 19:05:42,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:42,751 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:42,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:05:42,751 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:42,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1748710364, now seen corresponding path program 1 times [2023-12-15 19:05:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:42,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965123433] [2023-12-15 19:05:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4866 backedges. 2857 proven. 0 refuted. 0 times theorem prover too weak. 2009 trivial. 0 not checked. [2023-12-15 19:05:43,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:43,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965123433] [2023-12-15 19:05:43,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965123433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:43,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:43,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:05:43,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781334038] [2023-12-15 19:05:43,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:43,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:43,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:43,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:43,687 INFO L87 Difference]: Start difference. First operand 14479 states and 14965 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:44,378 INFO L93 Difference]: Finished difference Result 31589 states and 32643 transitions. [2023-12-15 19:05:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:44,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 1578 [2023-12-15 19:05:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:44,395 INFO L225 Difference]: With dead ends: 31589 [2023-12-15 19:05:44,396 INFO L226 Difference]: Without dead ends: 15466 [2023-12-15 19:05:44,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:44,408 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 207 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:44,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 409 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:05:44,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2023-12-15 19:05:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 15137. [2023-12-15 19:05:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.028475158562368) internal successors, (15567), 15136 states have internal predecessors, (15567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 15567 transitions. [2023-12-15 19:05:44,552 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 15567 transitions. Word has length 1578 [2023-12-15 19:05:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:44,552 INFO L495 AbstractCegarLoop]: Abstraction has 15137 states and 15567 transitions. [2023-12-15 19:05:44,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 15567 transitions. [2023-12-15 19:05:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1654 [2023-12-15 19:05:44,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:44,591 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:44,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:05:44,591 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:44,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:44,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1146684109, now seen corresponding path program 1 times [2023-12-15 19:05:44,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:44,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158994067] [2023-12-15 19:05:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:44,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5196 backedges. 1241 proven. 0 refuted. 0 times theorem prover too weak. 3955 trivial. 0 not checked. [2023-12-15 19:05:45,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158994067] [2023-12-15 19:05:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158994067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:45,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:05:45,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:05:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835416762] [2023-12-15 19:05:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:45,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:45,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:45,509 INFO L87 Difference]: Start difference. First operand 15137 states and 15567 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:46,191 INFO L93 Difference]: Finished difference Result 29944 states and 30802 transitions. [2023-12-15 19:05:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:46,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 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 1653 [2023-12-15 19:05:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:46,206 INFO L225 Difference]: With dead ends: 29944 [2023-12-15 19:05:46,206 INFO L226 Difference]: Without dead ends: 15137 [2023-12-15 19:05:46,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:05:46,217 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 175 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:46,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 421 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:05:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2023-12-15 19:05:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 13163. [2023-12-15 19:05:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0176265005318341) internal successors, (13394), 13162 states have internal predecessors, (13394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13394 transitions. [2023-12-15 19:05:46,327 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13394 transitions. Word has length 1653 [2023-12-15 19:05:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:46,328 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13394 transitions. [2023-12-15 19:05:46,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13394 transitions. [2023-12-15 19:05:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1815 [2023-12-15 19:05:46,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:46,355 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:46,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:05:46,355 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:46,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash -312715719, now seen corresponding path program 1 times [2023-12-15 19:05:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746355946] [2023-12-15 19:05:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6459 backedges. 3287 proven. 66 refuted. 0 times theorem prover too weak. 3106 trivial. 0 not checked. [2023-12-15 19:05:47,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746355946] [2023-12-15 19:05:47,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746355946] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:05:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63299267] [2023-12-15 19:05:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:47,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:05:47,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:05:47,984 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) [2023-12-15 19:05:48,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:05:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:48,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:05:48,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:05:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6459 backedges. 2629 proven. 0 refuted. 0 times theorem prover too weak. 3830 trivial. 0 not checked. [2023-12-15 19:05:49,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:05:49,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63299267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:49,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:05:49,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-15 19:05:49,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061089617] [2023-12-15 19:05:49,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:49,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:49,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:49,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:49,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:05:49,461 INFO L87 Difference]: Start difference. First operand 13163 states and 13394 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 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) [2023-12-15 19:05:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:50,070 INFO L93 Difference]: Finished difference Result 25996 states and 26456 transitions. [2023-12-15 19:05:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:50,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 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 1814 [2023-12-15 19:05:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:50,083 INFO L225 Difference]: With dead ends: 25996 [2023-12-15 19:05:50,083 INFO L226 Difference]: Without dead ends: 13163 [2023-12-15 19:05:50,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1813 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:05:50,091 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 87 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:50,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 79 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:05:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-15 19:05:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-15 19:05:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0175505242364382) internal successors, (13393), 13162 states have internal predecessors, (13393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:50,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13393 transitions. [2023-12-15 19:05:50,198 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13393 transitions. Word has length 1814 [2023-12-15 19:05:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:50,199 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13393 transitions. [2023-12-15 19:05:50,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 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) [2023-12-15 19:05:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13393 transitions. [2023-12-15 19:05:50,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1845 [2023-12-15 19:05:50,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:50,228 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-15 19:05:50,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:05:50,429 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,SelfDestructingSolverStorable17 [2023-12-15 19:05:50,429 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:50,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash 229226522, now seen corresponding path program 1 times [2023-12-15 19:05:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945390855] [2023-12-15 19:05:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:50,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7305 backedges. 2633 proven. 156 refuted. 0 times theorem prover too weak. 4516 trivial. 0 not checked. [2023-12-15 19:05:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945390855] [2023-12-15 19:05:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945390855] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:05:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093367935] [2023-12-15 19:05:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:53,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:05:53,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:05:53,052 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) [2023-12-15 19:05:53,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:05:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:53,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 2142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:05:53,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:05:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7305 backedges. 2789 proven. 0 refuted. 0 times theorem prover too weak. 4516 trivial. 0 not checked. [2023-12-15 19:05:54,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:05:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093367935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:54,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:05:54,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 19:05:54,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824479416] [2023-12-15 19:05:54,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:54,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:54,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:05:54,017 INFO L87 Difference]: Start difference. First operand 13163 states and 13393 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:54,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:54,779 INFO L93 Difference]: Finished difference Result 28299 states and 28820 transitions. [2023-12-15 19:05:54,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:54,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 1844 [2023-12-15 19:05:54,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:54,793 INFO L225 Difference]: With dead ends: 28299 [2023-12-15 19:05:54,793 INFO L226 Difference]: Without dead ends: 15466 [2023-12-15 19:05:54,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1848 GetRequests, 1843 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:05:54,801 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 172 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:54,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 91 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:05:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2023-12-15 19:05:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 14479. [2023-12-15 19:05:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.0168531565133305) internal successors, (14722), 14478 states have internal predecessors, (14722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 14722 transitions. [2023-12-15 19:05:54,911 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 14722 transitions. Word has length 1844 [2023-12-15 19:05:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:54,911 INFO L495 AbstractCegarLoop]: Abstraction has 14479 states and 14722 transitions. [2023-12-15 19:05:54,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 14722 transitions. [2023-12-15 19:05:54,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1953 [2023-12-15 19:05:54,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:54,941 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:05:54,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:05:55,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:05:55,148 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:55,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:55,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1425078360, now seen corresponding path program 1 times [2023-12-15 19:05:55,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:55,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766480304] [2023-12-15 19:05:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:55,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:05:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7307 backedges. 3974 proven. 1581 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2023-12-15 19:05:58,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:05:58,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766480304] [2023-12-15 19:05:58,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766480304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:05:58,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137868299] [2023-12-15 19:05:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:58,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:05:58,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:05:58,231 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) [2023-12-15 19:05:58,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:05:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:05:58,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:05:58,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:05:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7307 backedges. 3950 proven. 0 refuted. 0 times theorem prover too weak. 3357 trivial. 0 not checked. [2023-12-15 19:05:58,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:05:58,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137868299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:05:58,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:05:58,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 19:05:58,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878095607] [2023-12-15 19:05:58,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:05:58,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:05:58,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:05:58,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:05:58,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:05:58,832 INFO L87 Difference]: Start difference. First operand 14479 states and 14722 transitions. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:05:59,501 INFO L93 Difference]: Finished difference Result 29286 states and 29781 transitions. [2023-12-15 19:05:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:05:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 1952 [2023-12-15 19:05:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:05:59,514 INFO L225 Difference]: With dead ends: 29286 [2023-12-15 19:05:59,515 INFO L226 Difference]: Without dead ends: 15137 [2023-12-15 19:05:59,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1957 GetRequests, 1953 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:05:59,521 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 263 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:05:59,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 424 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:05:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2023-12-15 19:05:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15137. [2023-12-15 19:05:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.016384778012685) internal successors, (15384), 15136 states have internal predecessors, (15384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 15384 transitions. [2023-12-15 19:05:59,626 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 15384 transitions. Word has length 1952 [2023-12-15 19:05:59,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:05:59,627 INFO L495 AbstractCegarLoop]: Abstraction has 15137 states and 15384 transitions. [2023-12-15 19:05:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:05:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 15384 transitions. [2023-12-15 19:05:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2037 [2023-12-15 19:05:59,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:05:59,659 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 19:05:59,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:05:59,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:05:59,861 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:05:59,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:05:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1783590655, now seen corresponding path program 1 times [2023-12-15 19:05:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:05:59,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161198002] [2023-12-15 19:05:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:05:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8431 backedges. 3951 proven. 505 refuted. 0 times theorem prover too weak. 3975 trivial. 0 not checked. [2023-12-15 19:06:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161198002] [2023-12-15 19:06:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161198002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:06:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299261335] [2023-12-15 19:06:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:03,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:03,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:06:03,698 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) [2023-12-15 19:06:03,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:06:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:04,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:06:04,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:06:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8431 backedges. 4834 proven. 0 refuted. 0 times theorem prover too weak. 3597 trivial. 0 not checked. [2023-12-15 19:06:04,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:06:04,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299261335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:04,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:06:04,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-15 19:06:04,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381910632] [2023-12-15 19:06:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:04,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:04,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:04,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:06:04,250 INFO L87 Difference]: Start difference. First operand 15137 states and 15384 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:04,932 INFO L93 Difference]: Finished difference Result 32576 states and 33123 transitions. [2023-12-15 19:06:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:04,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 2036 [2023-12-15 19:06:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:04,949 INFO L225 Difference]: With dead ends: 32576 [2023-12-15 19:06:04,949 INFO L226 Difference]: Without dead ends: 17769 [2023-12-15 19:06:04,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2044 GetRequests, 2038 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:06:04,958 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 221 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:04,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 421 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:06:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17769 states. [2023-12-15 19:06:05,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17769 to 16782. [2023-12-15 19:06:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.0159704427626481) internal successors, (17049), 16781 states have internal predecessors, (17049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 17049 transitions. [2023-12-15 19:06:05,080 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 17049 transitions. Word has length 2036 [2023-12-15 19:06:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:05,080 INFO L495 AbstractCegarLoop]: Abstraction has 16782 states and 17049 transitions. [2023-12-15 19:06:05,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 17049 transitions. [2023-12-15 19:06:05,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2068 [2023-12-15 19:06:05,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:05,112 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:05,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:06:05,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:05,314 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:05,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1400413552, now seen corresponding path program 1 times [2023-12-15 19:06:05,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:05,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844712866] [2023-12-15 19:06:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:05,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8852 backedges. 4076 proven. 523 refuted. 0 times theorem prover too weak. 4253 trivial. 0 not checked. [2023-12-15 19:06:09,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:09,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844712866] [2023-12-15 19:06:09,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844712866] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:06:09,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286704869] [2023-12-15 19:06:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:09,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:09,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:06:09,295 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) [2023-12-15 19:06:09,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:06:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:09,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:06:09,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:06:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8852 backedges. 5070 proven. 0 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2023-12-15 19:06:10,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:06:10,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286704869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:10,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:06:10,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-15 19:06:10,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491489392] [2023-12-15 19:06:10,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:10,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:10,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:10,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:10,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:06:10,082 INFO L87 Difference]: Start difference. First operand 16782 states and 17049 transitions. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:10,799 INFO L93 Difference]: Finished difference Result 34550 states and 35096 transitions. [2023-12-15 19:06:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 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 2067 [2023-12-15 19:06:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:10,827 INFO L225 Difference]: With dead ends: 34550 [2023-12-15 19:06:10,827 INFO L226 Difference]: Without dead ends: 18098 [2023-12-15 19:06:10,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2075 GetRequests, 2069 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:06:10,838 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 255 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:10,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 414 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] Received shutdown request... [2023-12-15 19:06:10,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18098 states. [2023-12-15 19:06:10,858 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:06:10,864 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:06:10,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:06:10,898 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:06:11,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:11,065 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 19:06:11,068 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:11,070 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:06:11,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:06:11 BoogieIcfgContainer [2023-12-15 19:06:11,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:06:11,071 INFO L158 Benchmark]: Toolchain (without parser) took 55964.17ms. Allocated memory was 210.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 138.5MB in the beginning and 534.6MB in the end (delta: -396.1MB). Peak memory consumption was 758.3MB. Max. memory is 8.0GB. [2023-12-15 19:06:11,071 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 210.8MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:06:11,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 795.59ms. Allocated memory was 210.8MB in the beginning and 263.2MB in the end (delta: 52.4MB). Free memory was 138.3MB in the beginning and 179.2MB in the end (delta: -40.9MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. [2023-12-15 19:06:11,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.95ms. Allocated memory is still 263.2MB. Free memory was 179.2MB in the beginning and 155.1MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 19:06:11,075 INFO L158 Benchmark]: Boogie Preprocessor took 252.10ms. Allocated memory is still 263.2MB. Free memory was 155.1MB in the beginning and 202.4MB in the end (delta: -47.3MB). Peak memory consumption was 44.7MB. Max. memory is 8.0GB. [2023-12-15 19:06:11,075 INFO L158 Benchmark]: RCFGBuilder took 1808.80ms. Allocated memory was 263.2MB in the beginning and 412.1MB in the end (delta: 148.9MB). Free memory was 202.4MB in the beginning and 260.9MB in the end (delta: -58.5MB). Peak memory consumption was 93.3MB. Max. memory is 8.0GB. [2023-12-15 19:06:11,076 INFO L158 Benchmark]: TraceAbstraction took 52983.46ms. Allocated memory was 412.1MB in the beginning and 1.4GB in the end (delta: 952.1MB). Free memory was 260.4MB in the beginning and 534.6MB in the end (delta: -274.2MB). Peak memory consumption was 677.8MB. Max. memory is 8.0GB. [2023-12-15 19:06:11,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 210.8MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 795.59ms. Allocated memory was 210.8MB in the beginning and 263.2MB in the end (delta: 52.4MB). Free memory was 138.3MB in the beginning and 179.2MB in the end (delta: -40.9MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 116.95ms. Allocated memory is still 263.2MB. Free memory was 179.2MB in the beginning and 155.1MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 252.10ms. Allocated memory is still 263.2MB. Free memory was 155.1MB in the beginning and 202.4MB in the end (delta: -47.3MB). Peak memory consumption was 44.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1808.80ms. Allocated memory was 263.2MB in the beginning and 412.1MB in the end (delta: 148.9MB). Free memory was 202.4MB in the beginning and 260.9MB in the end (delta: -58.5MB). Peak memory consumption was 93.3MB. Max. memory is 8.0GB. * TraceAbstraction took 52983.46ms. Allocated memory was 412.1MB in the beginning and 1.4GB in the end (delta: 952.1MB). Free memory was 260.4MB in the beginning and 534.6MB in the end (delta: -274.2MB). Peak memory consumption was 677.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 83). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 334 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.9s, OverallIterations: 22, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 19.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5620 SdHoareTripleChecker+Valid, 17.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5620 mSDsluCounter, 6893 SdHoareTripleChecker+Invalid, 14.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130 mSDsCounter, 2989 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19426 IncrementalHoareTripleChecker+Invalid, 22415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2989 mSolverCounterUnsat, 6763 mSDtfsCounter, 19426 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10672 GetRequests, 10620 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16782occurred in iteration=21, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 9552 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 24.6s InterpolantComputationTime, 31448 NumberOfCodeBlocks, 31448 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 31420 ConstructedInterpolants, 0 QuantifiedInterpolants, 69237 SizeOfPredicates, 0 NumberOfNonLiveVariables, 12263 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 28 InterpolantComputations, 22 PerfectInterpolantSequences, 99152/102610 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown