/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:08:08,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:08:08,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:08:08,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:08:08,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:08:08,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:08:08,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:08:08,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:08:08,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:08:08,619 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:08:08,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:08:08,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:08:08,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:08:08,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:08:08,620 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:08:08,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:08:08,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:08:08,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:08:08,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:08:08,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:08:08,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:08:08,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:08:08,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:08:08,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:08:08,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:08:08,623 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:08:08,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:08:08,623 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:08:08,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:08:08,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:08:08,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:08:08,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:08:08,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:08:08,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:08:08,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:08:08,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:08:08,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:08:08,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:08:08,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:08:08,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:08:08,626 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:08:08,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:08:08,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:08:08,626 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:08:08,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:08:08,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:08:08,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:08:08,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:08:08,853 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:08:08,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label48.c [2023-12-20 17:08:10,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:08:10,399 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:08:10,400 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label48.c [2023-12-20 17:08:10,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e451555a7/fd03a89b3f094bf0986a1f865dbbc890/FLAGec3cfb595 [2023-12-20 17:08:10,443 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e451555a7/fd03a89b3f094bf0986a1f865dbbc890 [2023-12-20 17:08:10,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:08:10,447 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:08:10,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:08:10,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:08:10,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:08:10,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:08:10" (1/1) ... [2023-12-20 17:08:10,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bdb8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:10, skipping insertion in model container [2023-12-20 17:08:10,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:08:10" (1/1) ... [2023-12-20 17:08:10,546 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:08:10,723 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/Problem13_label48.c[1234,1247] [2023-12-20 17:08:11,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:08:11,508 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:08:11,517 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/Problem13_label48.c[1234,1247] [2023-12-20 17:08:11,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:08:11,852 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:08:11,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11 WrapperNode [2023-12-20 17:08:11,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:08:11,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:08:11,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:08:11,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:08:11,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:11,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,330 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 17:08:12,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:08:12,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:08:12,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:08:12,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:08:12,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,501 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,635 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]. [2023-12-20 17:08:12,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:12,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:13,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:08:13,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:08:13,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:08:13,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:08:13,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (1/1) ... [2023-12-20 17:08:13,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:08:13,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:08:13,110 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) [2023-12-20 17:08:13,153 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 [2023-12-20 17:08:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:08:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:08:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:08:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:08:13,219 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:08:13,221 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:08:17,246 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:08:17,299 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:08:17,300 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:08:17,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:08:17 BoogieIcfgContainer [2023-12-20 17:08:17,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:08:17,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:08:17,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:08:17,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:08:17,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:08:10" (1/3) ... [2023-12-20 17:08:17,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1744c628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:08:17, skipping insertion in model container [2023-12-20 17:08:17,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:11" (2/3) ... [2023-12-20 17:08:17,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1744c628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:08:17, skipping insertion in model container [2023-12-20 17:08:17,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:08:17" (3/3) ... [2023-12-20 17:08:17,306 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label48.c [2023-12-20 17:08:17,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:08:17,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:08:17,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:08:17,381 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;@2ac31eb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:08:17,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:08:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-20 17:08:17,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:17,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-20 17:08:17,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:17,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash 326675475, now seen corresponding path program 1 times [2023-12-20 17:08:17,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:17,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455555980] [2023-12-20 17:08:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:17,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:17,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455555980] [2023-12-20 17:08:17,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455555980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:17,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:17,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971523496] [2023-12-20 17:08:17,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:17,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:17,562 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:20,521 INFO L93 Difference]: Finished difference Result 2911 states and 5519 transitions. [2023-12-20 17:08:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-20 17:08:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:20,550 INFO L225 Difference]: With dead ends: 2911 [2023-12-20 17:08:20,550 INFO L226 Difference]: Without dead ends: 1872 [2023-12-20 17:08:20,558 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 [2023-12-20 17:08:20,561 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 885 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:20,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 1092 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:08:20,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2023-12-20 17:08:20,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1858. [2023-12-20 17:08:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.5444264943457189) internal successors, (2868), 1857 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2868 transitions. [2023-12-20 17:08:20,668 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2868 transitions. Word has length 5 [2023-12-20 17:08:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:20,668 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2868 transitions. [2023-12-20 17:08:20,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2868 transitions. [2023-12-20 17:08:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 17:08:20,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:20,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:20,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:08:20,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:20,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:20,671 INFO L85 PathProgramCache]: Analyzing trace with hash 247773310, now seen corresponding path program 1 times [2023-12-20 17:08:20,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:20,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537435437] [2023-12-20 17:08:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:20,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:20,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537435437] [2023-12-20 17:08:20,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537435437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:20,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:20,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:20,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257541118] [2023-12-20 17:08:20,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:20,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:20,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:20,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:20,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:20,906 INFO L87 Difference]: Start difference. First operand 1858 states and 2868 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:24,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:24,169 INFO L93 Difference]: Finished difference Result 5316 states and 8228 transitions. [2023-12-20 17:08:24,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:24,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-20 17:08:24,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:24,179 INFO L225 Difference]: With dead ends: 5316 [2023-12-20 17:08:24,179 INFO L226 Difference]: Without dead ends: 3459 [2023-12-20 17:08:24,181 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 [2023-12-20 17:08:24,182 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:24,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1190 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:08:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2023-12-20 17:08:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3458. [2023-12-20 17:08:24,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.380676887474689) internal successors, (4773), 3457 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4773 transitions. [2023-12-20 17:08:24,227 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4773 transitions. Word has length 77 [2023-12-20 17:08:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:24,228 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4773 transitions. [2023-12-20 17:08:24,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:24,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4773 transitions. [2023-12-20 17:08:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 17:08:24,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:24,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:24,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:08:24,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:24,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:24,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1417229941, now seen corresponding path program 1 times [2023-12-20 17:08:24,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:24,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945812098] [2023-12-20 17:08:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:24,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:24,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:24,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945812098] [2023-12-20 17:08:24,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945812098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:24,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:24,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:24,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837972285] [2023-12-20 17:08:24,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:24,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:08:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:08:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:24,610 INFO L87 Difference]: Start difference. First operand 3458 states and 4773 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:29,036 INFO L93 Difference]: Finished difference Result 10869 states and 14767 transitions. [2023-12-20 17:08:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:08:29,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-20 17:08:29,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:29,060 INFO L225 Difference]: With dead ends: 10869 [2023-12-20 17:08:29,060 INFO L226 Difference]: Without dead ends: 7412 [2023-12-20 17:08:29,065 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 [2023-12-20 17:08:29,068 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2581 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:29,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-20 17:08:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2023-12-20 17:08:29,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 7411. [2023-12-20 17:08:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 7410 states have (on average 1.269905533063428) internal successors, (9410), 7410 states have internal predecessors, (9410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 9410 transitions. [2023-12-20 17:08:29,179 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 9410 transitions. Word has length 91 [2023-12-20 17:08:29,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:29,184 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 9410 transitions. [2023-12-20 17:08:29,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 9410 transitions. [2023-12-20 17:08:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 17:08:29,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:29,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:08:29,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:29,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 311801849, now seen corresponding path program 1 times [2023-12-20 17:08:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912578706] [2023-12-20 17:08:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:08:29,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:29,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912578706] [2023-12-20 17:08:29,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912578706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:29,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:29,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:29,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778178003] [2023-12-20 17:08:29,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:29,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:29,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:29,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:29,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:29,375 INFO L87 Difference]: Start difference. First operand 7411 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:32,731 INFO L93 Difference]: Finished difference Result 20356 states and 26251 transitions. [2023-12-20 17:08:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:32,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 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 172 [2023-12-20 17:08:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:32,766 INFO L225 Difference]: With dead ends: 20356 [2023-12-20 17:08:32,769 INFO L226 Difference]: Without dead ends: 13733 [2023-12-20 17:08:32,790 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 [2023-12-20 17:08:32,791 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:32,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 978 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:08:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2023-12-20 17:08:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 12936. [2023-12-20 17:08:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 12935 states have (on average 1.2152299961345188) internal successors, (15719), 12935 states have internal predecessors, (15719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 15719 transitions. [2023-12-20 17:08:33,054 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 15719 transitions. Word has length 172 [2023-12-20 17:08:33,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:33,055 INFO L495 AbstractCegarLoop]: Abstraction has 12936 states and 15719 transitions. [2023-12-20 17:08:33,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 15719 transitions. [2023-12-20 17:08:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-20 17:08:33,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:33,059 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:33,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:08:33,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:33,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1297162409, now seen corresponding path program 1 times [2023-12-20 17:08:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999625458] [2023-12-20 17:08:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:33,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:33,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999625458] [2023-12-20 17:08:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999625458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:33,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817309732] [2023-12-20 17:08:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:33,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:33,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:33,199 INFO L87 Difference]: Start difference. First operand 12936 states and 15719 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:35,840 INFO L93 Difference]: Finished difference Result 31391 states and 39118 transitions. [2023-12-20 17:08:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:35,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-20 17:08:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:35,871 INFO L225 Difference]: With dead ends: 31391 [2023-12-20 17:08:35,871 INFO L226 Difference]: Without dead ends: 19243 [2023-12-20 17:08:35,883 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 [2023-12-20 17:08:35,883 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 857 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:35,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 924 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:08:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2023-12-20 17:08:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 18446. [2023-12-20 17:08:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18445 states have (on average 1.20243968555164) internal successors, (22179), 18445 states have internal predecessors, (22179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 22179 transitions. [2023-12-20 17:08:36,138 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 22179 transitions. Word has length 204 [2023-12-20 17:08:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:36,139 INFO L495 AbstractCegarLoop]: Abstraction has 18446 states and 22179 transitions. [2023-12-20 17:08:36,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:36,140 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 22179 transitions. [2023-12-20 17:08:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-20 17:08:36,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:36,144 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:36,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:08:36,145 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:36,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:36,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1419422385, now seen corresponding path program 1 times [2023-12-20 17:08:36,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:36,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435177053] [2023-12-20 17:08:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:36,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:08:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:36,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435177053] [2023-12-20 17:08:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435177053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:36,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:36,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848905176] [2023-12-20 17:08:36,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:36,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:36,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:36,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:36,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:36,379 INFO L87 Difference]: Start difference. First operand 18446 states and 22179 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:39,722 INFO L93 Difference]: Finished difference Result 42411 states and 52036 transitions. [2023-12-20 17:08:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2023-12-20 17:08:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:39,783 INFO L225 Difference]: With dead ends: 42411 [2023-12-20 17:08:39,783 INFO L226 Difference]: Without dead ends: 24753 [2023-12-20 17:08:39,806 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 [2023-12-20 17:08:39,808 INFO L413 NwaCegarLoop]: 1794 mSDtfsCounter, 864 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:39,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1944 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:08:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24753 states. [2023-12-20 17:08:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24753 to 23961. [2023-12-20 17:08:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23961 states, 23960 states have (on average 1.1787145242070116) internal successors, (28242), 23960 states have internal predecessors, (28242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23961 states to 23961 states and 28242 transitions. [2023-12-20 17:08:40,076 INFO L78 Accepts]: Start accepts. Automaton has 23961 states and 28242 transitions. Word has length 293 [2023-12-20 17:08:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:40,077 INFO L495 AbstractCegarLoop]: Abstraction has 23961 states and 28242 transitions. [2023-12-20 17:08:40,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 23961 states and 28242 transitions. [2023-12-20 17:08:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-20 17:08:40,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:40,082 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:40,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:08:40,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:40,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash -734831771, now seen corresponding path program 1 times [2023-12-20 17:08:40,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:40,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911054164] [2023-12-20 17:08:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:08:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911054164] [2023-12-20 17:08:40,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911054164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:40,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:40,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545127688] [2023-12-20 17:08:40,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:40,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:08:40,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:40,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:08:40,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:40,289 INFO L87 Difference]: Start difference. First operand 23961 states and 28242 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:46,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:46,431 INFO L93 Difference]: Finished difference Result 89063 states and 105283 transitions. [2023-12-20 17:08:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:08:46,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 302 [2023-12-20 17:08:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:46,550 INFO L225 Difference]: With dead ends: 89063 [2023-12-20 17:08:46,550 INFO L226 Difference]: Without dead ends: 65890 [2023-12-20 17:08:46,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:46,586 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1742 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6026 mSolverCounterSat, 1213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 7239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1213 IncrementalHoareTripleChecker+Valid, 6026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:46,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 635 Invalid, 7239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1213 Valid, 6026 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-20 17:08:46,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65890 states. [2023-12-20 17:08:47,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65890 to 64188. [2023-12-20 17:08:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64188 states, 64187 states have (on average 1.1559350024148192) internal successors, (74196), 64187 states have internal predecessors, (74196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64188 states to 64188 states and 74196 transitions. [2023-12-20 17:08:47,286 INFO L78 Accepts]: Start accepts. Automaton has 64188 states and 74196 transitions. Word has length 302 [2023-12-20 17:08:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:47,287 INFO L495 AbstractCegarLoop]: Abstraction has 64188 states and 74196 transitions. [2023-12-20 17:08:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64188 states and 74196 transitions. [2023-12-20 17:08:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-20 17:08:47,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:47,293 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 17:08:47,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:08:47,294 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:47,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1450367310, now seen corresponding path program 1 times [2023-12-20 17:08:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163568308] [2023-12-20 17:08:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-20 17:08:47,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:47,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163568308] [2023-12-20 17:08:47,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163568308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:47,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:47,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:47,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247927030] [2023-12-20 17:08:47,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:47,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:47,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:47,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:47,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:47,549 INFO L87 Difference]: Start difference. First operand 64188 states and 74196 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:51,613 INFO L93 Difference]: Finished difference Result 140991 states and 162392 transitions. [2023-12-20 17:08:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:51,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 302 [2023-12-20 17:08:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:51,750 INFO L225 Difference]: With dead ends: 140991 [2023-12-20 17:08:51,751 INFO L226 Difference]: Without dead ends: 77591 [2023-12-20 17:08:51,807 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 [2023-12-20 17:08:51,809 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:51,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1197 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 17:08:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77591 states. [2023-12-20 17:08:52,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77591 to 76793. [2023-12-20 17:08:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76793 states, 76792 states have (on average 1.1395848525888113) internal successors, (87511), 76792 states have internal predecessors, (87511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76793 states to 76793 states and 87511 transitions. [2023-12-20 17:08:52,909 INFO L78 Accepts]: Start accepts. Automaton has 76793 states and 87511 transitions. Word has length 302 [2023-12-20 17:08:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:52,909 INFO L495 AbstractCegarLoop]: Abstraction has 76793 states and 87511 transitions. [2023-12-20 17:08:52,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 76793 states and 87511 transitions. [2023-12-20 17:08:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-20 17:08:52,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:52,913 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2023-12-20 17:08:52,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:08:52,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:52,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:52,914 INFO L85 PathProgramCache]: Analyzing trace with hash -656525062, now seen corresponding path program 1 times [2023-12-20 17:08:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:52,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580594082] [2023-12-20 17:08:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:52,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 176 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:08:53,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:53,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580594082] [2023-12-20 17:08:53,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580594082] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:08:53,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311585790] [2023-12-20 17:08:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:53,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:08:53,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:08:53,951 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) [2023-12-20 17:08:53,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:08:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:54,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:08:54,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:08:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-20 17:08:54,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:08:54,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311585790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:54,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:08:54,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:08:54,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128828230] [2023-12-20 17:08:54,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:54,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:54,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:08:54,215 INFO L87 Difference]: Start difference. First operand 76793 states and 87511 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:57,068 INFO L93 Difference]: Finished difference Result 152796 states and 174228 transitions. [2023-12-20 17:08:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 331 [2023-12-20 17:08:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:57,188 INFO L225 Difference]: With dead ends: 152796 [2023-12-20 17:08:57,188 INFO L226 Difference]: Without dead ends: 76791 [2023-12-20 17:08:57,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:08:57,228 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1122 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:57,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1440 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:08:57,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76791 states. [2023-12-20 17:08:58,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76791 to 76003. [2023-12-20 17:08:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76003 states, 76002 states have (on average 1.1082339938422674) internal successors, (84228), 76002 states have internal predecessors, (84228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76003 states to 76003 states and 84228 transitions. [2023-12-20 17:08:58,464 INFO L78 Accepts]: Start accepts. Automaton has 76003 states and 84228 transitions. Word has length 331 [2023-12-20 17:08:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:58,465 INFO L495 AbstractCegarLoop]: Abstraction has 76003 states and 84228 transitions. [2023-12-20 17:08:58,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 76003 states and 84228 transitions. [2023-12-20 17:08:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-20 17:08:58,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:58,472 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:58,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 17:08:58,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:08:58,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:58,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash -178835400, now seen corresponding path program 1 times [2023-12-20 17:08:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:58,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146558813] [2023-12-20 17:08:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-20 17:08:59,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:59,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146558813] [2023-12-20 17:08:59,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146558813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:59,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:59,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:59,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122236572] [2023-12-20 17:08:59,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:59,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:59,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:59,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:59,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:59,025 INFO L87 Difference]: Start difference. First operand 76003 states and 84228 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:02,198 INFO L93 Difference]: Finished difference Result 170116 states and 190567 transitions. [2023-12-20 17:09:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:02,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 361 [2023-12-20 17:09:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:02,324 INFO L225 Difference]: With dead ends: 170116 [2023-12-20 17:09:02,324 INFO L226 Difference]: Without dead ends: 94901 [2023-12-20 17:09:02,384 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 [2023-12-20 17:09:02,384 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 904 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:02,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 905 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:09:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94901 states. [2023-12-20 17:09:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94901 to 94883. [2023-12-20 17:09:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94883 states, 94882 states have (on average 1.1142366307624207) internal successors, (105721), 94882 states have internal predecessors, (105721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94883 states to 94883 states and 105721 transitions. [2023-12-20 17:09:03,378 INFO L78 Accepts]: Start accepts. Automaton has 94883 states and 105721 transitions. Word has length 361 [2023-12-20 17:09:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:03,379 INFO L495 AbstractCegarLoop]: Abstraction has 94883 states and 105721 transitions. [2023-12-20 17:09:03,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 94883 states and 105721 transitions. [2023-12-20 17:09:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-12-20 17:09:03,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:03,384 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2023-12-20 17:09:03,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:09:03,385 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:03,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1156136841, now seen corresponding path program 1 times [2023-12-20 17:09:03,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:03,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65822682] [2023-12-20 17:09:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:03,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-12-20 17:09:03,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:03,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65822682] [2023-12-20 17:09:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65822682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:03,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:03,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459978311] [2023-12-20 17:09:03,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:03,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:03,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:03,732 INFO L87 Difference]: Start difference. First operand 94883 states and 105721 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 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) [2023-12-20 17:09:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:07,357 INFO L93 Difference]: Finished difference Result 208750 states and 232951 transitions. [2023-12-20 17:09:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:07,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 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 394 [2023-12-20 17:09:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:07,548 INFO L225 Difference]: With dead ends: 208750 [2023-12-20 17:09:07,549 INFO L226 Difference]: Without dead ends: 128830 [2023-12-20 17:09:07,628 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 [2023-12-20 17:09:07,629 INFO L413 NwaCegarLoop]: 1920 mSDtfsCounter, 962 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:07,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2099 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:09:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128830 states. [2023-12-20 17:09:08,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128830 to 117799. [2023-12-20 17:09:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117799 states, 117798 states have (on average 1.1065977351058591) internal successors, (130355), 117798 states have internal predecessors, (130355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117799 states to 117799 states and 130355 transitions. [2023-12-20 17:09:09,109 INFO L78 Accepts]: Start accepts. Automaton has 117799 states and 130355 transitions. Word has length 394 [2023-12-20 17:09:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:09,109 INFO L495 AbstractCegarLoop]: Abstraction has 117799 states and 130355 transitions. [2023-12-20 17:09:09,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 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) [2023-12-20 17:09:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 117799 states and 130355 transitions. [2023-12-20 17:09:09,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-12-20 17:09:09,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:09,115 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:09,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:09:09,115 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:09,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:09,115 INFO L85 PathProgramCache]: Analyzing trace with hash -415989251, now seen corresponding path program 1 times [2023-12-20 17:09:09,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:09,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240958171] [2023-12-20 17:09:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:09,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:09:09,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:09,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240958171] [2023-12-20 17:09:09,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240958171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:09,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:09,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:09,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127178376] [2023-12-20 17:09:09,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:09,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:09,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:09,549 INFO L87 Difference]: Start difference. First operand 117799 states and 130355 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:13,247 INFO L93 Difference]: Finished difference Result 236398 states and 261531 transitions. [2023-12-20 17:09:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:13,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 399 [2023-12-20 17:09:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:13,569 INFO L225 Difference]: With dead ends: 236398 [2023-12-20 17:09:13,570 INFO L226 Difference]: Without dead ends: 117813 [2023-12-20 17:09:13,629 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 [2023-12-20 17:09:13,630 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 793 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:13,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1866 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 17:09:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117813 states. [2023-12-20 17:09:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117813 to 116214. [2023-12-20 17:09:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116214 states, 116213 states have (on average 1.0753099911369641) internal successors, (124965), 116213 states have internal predecessors, (124965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116214 states to 116214 states and 124965 transitions. [2023-12-20 17:09:15,392 INFO L78 Accepts]: Start accepts. Automaton has 116214 states and 124965 transitions. Word has length 399 [2023-12-20 17:09:15,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:15,393 INFO L495 AbstractCegarLoop]: Abstraction has 116214 states and 124965 transitions. [2023-12-20 17:09:15,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:15,393 INFO L276 IsEmpty]: Start isEmpty. Operand 116214 states and 124965 transitions. [2023-12-20 17:09:15,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-12-20 17:09:15,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:15,398 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:15,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:09:15,399 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:15,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash -311650913, now seen corresponding path program 1 times [2023-12-20 17:09:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:15,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406868133] [2023-12-20 17:09:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:15,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 17:09:15,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406868133] [2023-12-20 17:09:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406868133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:15,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:15,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905686783] [2023-12-20 17:09:15,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:15,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:09:15,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:15,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:09:15,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:15,934 INFO L87 Difference]: Start difference. First operand 116214 states and 124965 transitions. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:21,802 INFO L93 Difference]: Finished difference Result 281270 states and 306272 transitions. [2023-12-20 17:09:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:09:21,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 409 [2023-12-20 17:09:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:22,046 INFO L225 Difference]: With dead ends: 281270 [2023-12-20 17:09:22,046 INFO L226 Difference]: Without dead ends: 180019 [2023-12-20 17:09:22,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:22,107 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 1448 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 6179 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 6892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 6179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:22,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 998 Invalid, 6892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 6179 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 17:09:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180019 states. [2023-12-20 17:09:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180019 to 179996. [2023-12-20 17:09:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179996 states, 179995 states have (on average 1.0784410678074392) internal successors, (194114), 179995 states have internal predecessors, (194114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179996 states to 179996 states and 194114 transitions. [2023-12-20 17:09:24,726 INFO L78 Accepts]: Start accepts. Automaton has 179996 states and 194114 transitions. Word has length 409 [2023-12-20 17:09:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:24,727 INFO L495 AbstractCegarLoop]: Abstraction has 179996 states and 194114 transitions. [2023-12-20 17:09:24,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 179996 states and 194114 transitions. [2023-12-20 17:09:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-12-20 17:09:24,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:24,738 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 17:09:24,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:09:24,739 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:24,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash 173139832, now seen corresponding path program 1 times [2023-12-20 17:09:24,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:24,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005597922] [2023-12-20 17:09:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:24,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 248 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:09:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:25,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005597922] [2023-12-20 17:09:25,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005597922] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:09:25,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8373354] [2023-12-20 17:09:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:25,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:25,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:09:25,700 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) [2023-12-20 17:09:25,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:09:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:25,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:09:25,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:09:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-20 17:09:25,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:09:25,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8373354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:25,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:09:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:09:25,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540289735] [2023-12-20 17:09:25,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:25,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:25,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:09:25,871 INFO L87 Difference]: Start difference. First operand 179996 states and 194114 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:30,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:30,158 INFO L93 Difference]: Finished difference Result 378861 states and 409095 transitions. [2023-12-20 17:09:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:30,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 421 [2023-12-20 17:09:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:30,458 INFO L225 Difference]: With dead ends: 378861 [2023-12-20 17:09:30,458 INFO L226 Difference]: Without dead ends: 211464 [2023-12-20 17:09:30,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:09:30,534 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 939 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:30,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1750 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2660 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 17:09:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211464 states. [2023-12-20 17:09:32,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211464 to 200402. [2023-12-20 17:09:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200402 states, 200401 states have (on average 1.0733579173756618) internal successors, (215102), 200401 states have internal predecessors, (215102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200402 states to 200402 states and 215102 transitions. [2023-12-20 17:09:33,416 INFO L78 Accepts]: Start accepts. Automaton has 200402 states and 215102 transitions. Word has length 421 [2023-12-20 17:09:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:33,421 INFO L495 AbstractCegarLoop]: Abstraction has 200402 states and 215102 transitions. [2023-12-20 17:09:33,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 200402 states and 215102 transitions. [2023-12-20 17:09:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-20 17:09:33,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:33,428 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:33,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 17:09:33,645 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,SelfDestructingSolverStorable13 [2023-12-20 17:09:33,661 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:33,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1380181762, now seen corresponding path program 1 times [2023-12-20 17:09:33,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:33,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277924321] [2023-12-20 17:09:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:33,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 17:09:35,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:35,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277924321] [2023-12-20 17:09:35,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277924321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:35,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:35,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:35,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973709325] [2023-12-20 17:09:35,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:35,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:09:35,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:09:35,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:35,143 INFO L87 Difference]: Start difference. First operand 200402 states and 215102 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:41,375 INFO L93 Difference]: Finished difference Result 459902 states and 496228 transitions. [2023-12-20 17:09:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:09:41,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 453 [2023-12-20 17:09:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:41,873 INFO L225 Difference]: With dead ends: 459902 [2023-12-20 17:09:41,874 INFO L226 Difference]: Without dead ends: 274462 [2023-12-20 17:09:42,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:42,031 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 1513 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 4887 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 5737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 4887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:42,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 897 Invalid, 5737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 4887 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-20 17:09:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274462 states. [2023-12-20 17:09:44,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274462 to 271297. [2023-12-20 17:09:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271297 states, 271296 states have (on average 1.0760202878037273) internal successors, (291920), 271296 states have internal predecessors, (291920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271297 states to 271297 states and 291920 transitions. [2023-12-20 17:09:45,771 INFO L78 Accepts]: Start accepts. Automaton has 271297 states and 291920 transitions. Word has length 453 [2023-12-20 17:09:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:45,772 INFO L495 AbstractCegarLoop]: Abstraction has 271297 states and 291920 transitions. [2023-12-20 17:09:45,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 271297 states and 291920 transitions. [2023-12-20 17:09:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-12-20 17:09:45,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:45,781 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 17:09:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:09:45,781 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:45,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1159286575, now seen corresponding path program 1 times [2023-12-20 17:09:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:45,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075893537] [2023-12-20 17:09:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 245 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:09:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:46,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075893537] [2023-12-20 17:09:46,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075893537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:09:46,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226250899] [2023-12-20 17:09:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:46,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:46,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:09:46,886 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) [2023-12-20 17:09:46,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:09:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:47,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:09:47,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:09:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-20 17:09:47,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:09:47,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226250899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:47,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:09:47,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:09:47,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198655792] [2023-12-20 17:09:47,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:47,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:47,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:47,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:47,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:47,085 INFO L87 Difference]: Start difference. First operand 271297 states and 291920 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:50,789 INFO L93 Difference]: Finished difference Result 526841 states and 567632 transitions. [2023-12-20 17:09:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:50,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 477 [2023-12-20 17:09:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:51,231 INFO L225 Difference]: With dead ends: 526841 [2023-12-20 17:09:51,231 INFO L226 Difference]: Without dead ends: 270507 [2023-12-20 17:09:51,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:51,366 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 915 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:51,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1835 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:09:51,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270507 states. [2023-12-20 17:09:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270507 to 249992. [2023-12-20 17:09:54,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249992 states, 249991 states have (on average 1.0779828073810658) internal successors, (269486), 249991 states have internal predecessors, (269486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249992 states to 249992 states and 269486 transitions. [2023-12-20 17:09:55,166 INFO L78 Accepts]: Start accepts. Automaton has 249992 states and 269486 transitions. Word has length 477 [2023-12-20 17:09:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:55,166 INFO L495 AbstractCegarLoop]: Abstraction has 249992 states and 269486 transitions. [2023-12-20 17:09:55,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 249992 states and 269486 transitions. [2023-12-20 17:09:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-20 17:09:55,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:55,177 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:55,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 17:09:55,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:55,383 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:55,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash 577551462, now seen corresponding path program 1 times [2023-12-20 17:09:55,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:55,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277184048] [2023-12-20 17:09:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:09:55,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:55,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277184048] [2023-12-20 17:09:55,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277184048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:55,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:55,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:55,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792749485] [2023-12-20 17:09:55,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:55,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:55,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:55,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:55,605 INFO L87 Difference]: Start difference. First operand 249992 states and 269486 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:59,867 INFO L93 Difference]: Finished difference Result 496805 states and 535472 transitions. [2023-12-20 17:09:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 496 [2023-12-20 17:09:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:00,246 INFO L225 Difference]: With dead ends: 496805 [2023-12-20 17:10:00,246 INFO L226 Difference]: Without dead ends: 246814 [2023-12-20 17:10:00,333 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 [2023-12-20 17:10:00,334 INFO L413 NwaCegarLoop]: 1469 mSDtfsCounter, 933 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:00,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1593 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:10:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246814 states. [2023-12-20 17:10:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246814 to 225532. [2023-12-20 17:10:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225532 states, 225531 states have (on average 1.056839192838235) internal successors, (238350), 225531 states have internal predecessors, (238350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225532 states to 225532 states and 238350 transitions. [2023-12-20 17:10:03,407 INFO L78 Accepts]: Start accepts. Automaton has 225532 states and 238350 transitions. Word has length 496 [2023-12-20 17:10:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:03,407 INFO L495 AbstractCegarLoop]: Abstraction has 225532 states and 238350 transitions. [2023-12-20 17:10:03,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 225532 states and 238350 transitions. [2023-12-20 17:10:03,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-20 17:10:03,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:03,417 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:10:03,417 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:03,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1311918837, now seen corresponding path program 1 times [2023-12-20 17:10:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491825656] [2023-12-20 17:10:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:03,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-20 17:10:04,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:04,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491825656] [2023-12-20 17:10:04,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491825656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:04,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:04,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:04,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576542464] [2023-12-20 17:10:04,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:04,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:04,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:04,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:04,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:04,291 INFO L87 Difference]: Start difference. First operand 225532 states and 238350 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:08,528 INFO L93 Difference]: Finished difference Result 451861 states and 477506 transitions. [2023-12-20 17:10:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:08,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 505 [2023-12-20 17:10:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:08,907 INFO L225 Difference]: With dead ends: 451861 [2023-12-20 17:10:08,908 INFO L226 Difference]: Without dead ends: 227117 [2023-12-20 17:10:09,035 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 [2023-12-20 17:10:09,040 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 859 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:09,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1456 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:10:09,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227117 states. [2023-12-20 17:10:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227117 to 225528. [2023-12-20 17:10:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225528 states, 225527 states have (on average 1.047355748979058) internal successors, (236207), 225527 states have internal predecessors, (236207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:12,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225528 states to 225528 states and 236207 transitions. [2023-12-20 17:10:12,526 INFO L78 Accepts]: Start accepts. Automaton has 225528 states and 236207 transitions. Word has length 505 [2023-12-20 17:10:12,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:12,527 INFO L495 AbstractCegarLoop]: Abstraction has 225528 states and 236207 transitions. [2023-12-20 17:10:12,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:12,527 INFO L276 IsEmpty]: Start isEmpty. Operand 225528 states and 236207 transitions. [2023-12-20 17:10:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-20 17:10:12,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:12,541 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 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] [2023-12-20 17:10:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:10:12,541 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:12,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash -521622314, now seen corresponding path program 1 times [2023-12-20 17:10:12,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:12,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114605628] [2023-12-20 17:10:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 275 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:10:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114605628] [2023-12-20 17:10:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114605628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:10:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446531170] [2023-12-20 17:10:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:13,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:13,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:10:13,438 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) [2023-12-20 17:10:13,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:10:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:13,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:10:13,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:10:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-20 17:10:14,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:10:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446531170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:14,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:10:14,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 17:10:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767498886] [2023-12-20 17:10:14,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:14,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:14,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:14,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:10:14,140 INFO L87 Difference]: Start difference. First operand 225528 states and 236207 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:16,901 INFO L93 Difference]: Finished difference Result 436080 states and 457120 transitions. [2023-12-20 17:10:16,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:16,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 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 524 [2023-12-20 17:10:16,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:17,292 INFO L225 Difference]: With dead ends: 436080 [2023-12-20 17:10:17,292 INFO L226 Difference]: Without dead ends: 224725 [2023-12-20 17:10:17,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:10:17,383 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1526 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:17,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 282 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:10:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224725 states. [2023-12-20 17:10:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224725 to 224724. [2023-12-20 17:10:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224724 states, 224723 states have (on average 1.0472047809970497) internal successors, (235331), 224723 states have internal predecessors, (235331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224724 states to 224724 states and 235331 transitions. [2023-12-20 17:10:20,391 INFO L78 Accepts]: Start accepts. Automaton has 224724 states and 235331 transitions. Word has length 524 [2023-12-20 17:10:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:20,391 INFO L495 AbstractCegarLoop]: Abstraction has 224724 states and 235331 transitions. [2023-12-20 17:10:20,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 224724 states and 235331 transitions. [2023-12-20 17:10:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-12-20 17:10:20,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:20,406 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 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] [2023-12-20 17:10:20,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 17:10:20,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:20,612 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:20,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1841739145, now seen corresponding path program 1 times [2023-12-20 17:10:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:20,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169769791] [2023-12-20 17:10:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 459 proven. 110 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-20 17:10:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169769791] [2023-12-20 17:10:21,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169769791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:10:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481430515] [2023-12-20 17:10:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:21,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:21,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:10:21,940 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) [2023-12-20 17:10:21,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 17:10:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:22,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:10:22,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:10:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-20 17:10:22,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:10:22,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481430515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:22,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:10:22,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 17:10:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190803819] [2023-12-20 17:10:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:22,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:22,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:22,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:22,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:10:22,713 INFO L87 Difference]: Start difference. First operand 224724 states and 235331 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:25,803 INFO L93 Difference]: Finished difference Result 440800 states and 461958 transitions. [2023-12-20 17:10:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:25,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 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 567 [2023-12-20 17:10:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:26,455 INFO L225 Difference]: With dead ends: 440800 [2023-12-20 17:10:26,455 INFO L226 Difference]: Without dead ends: 228670 [2023-12-20 17:10:26,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:10:26,550 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 617 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:26,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1123 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:10:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228670 states. [2023-12-20 17:10:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228670 to 227086. [2023-12-20 17:10:28,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227086 states, 227085 states have (on average 1.0432833520487923) internal successors, (236914), 227085 states have internal predecessors, (236914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:29,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227086 states to 227086 states and 236914 transitions. [2023-12-20 17:10:29,828 INFO L78 Accepts]: Start accepts. Automaton has 227086 states and 236914 transitions. Word has length 567 [2023-12-20 17:10:29,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:29,828 INFO L495 AbstractCegarLoop]: Abstraction has 227086 states and 236914 transitions. [2023-12-20 17:10:29,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 227086 states and 236914 transitions. [2023-12-20 17:10:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-20 17:10:29,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:29,850 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:29,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 17:10:30,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:30,059 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:30,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:30,061 INFO L85 PathProgramCache]: Analyzing trace with hash 288101539, now seen corresponding path program 1 times [2023-12-20 17:10:30,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:30,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689232536] [2023-12-20 17:10:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-12-20 17:10:30,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689232536] [2023-12-20 17:10:30,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689232536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:30,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:30,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:30,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153038114] [2023-12-20 17:10:30,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:30,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:30,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:30,565 INFO L87 Difference]: Start difference. First operand 227086 states and 236914 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:35,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:35,043 INFO L93 Difference]: Finished difference Result 506165 states and 529283 transitions. [2023-12-20 17:10:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:35,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 591 [2023-12-20 17:10:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:35,474 INFO L225 Difference]: With dead ends: 506165 [2023-12-20 17:10:35,474 INFO L226 Difference]: Without dead ends: 293252 [2023-12-20 17:10:35,584 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 [2023-12-20 17:10:35,585 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1004 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:35,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 574 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [876 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:10:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293252 states. [2023-12-20 17:10:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293252 to 293248. [2023-12-20 17:10:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293248 states, 293247 states have (on average 1.039625298809536) internal successors, (304867), 293247 states have internal predecessors, (304867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293248 states to 293248 states and 304867 transitions. [2023-12-20 17:10:39,207 INFO L78 Accepts]: Start accepts. Automaton has 293248 states and 304867 transitions. Word has length 591 [2023-12-20 17:10:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:39,207 INFO L495 AbstractCegarLoop]: Abstraction has 293248 states and 304867 transitions. [2023-12-20 17:10:39,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 293248 states and 304867 transitions. [2023-12-20 17:10:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-12-20 17:10:39,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:39,217 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:39,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:10:39,218 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:39,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1329030931, now seen corresponding path program 1 times [2023-12-20 17:10:39,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224672878] [2023-12-20 17:10:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:39,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-20 17:10:39,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:39,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224672878] [2023-12-20 17:10:39,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224672878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:39,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:39,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:39,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304344976] [2023-12-20 17:10:39,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:39,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:39,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:39,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:39,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:39,996 INFO L87 Difference]: Start difference. First operand 293248 states and 304867 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:43,784 INFO L93 Difference]: Finished difference Result 606193 states and 630105 transitions. [2023-12-20 17:10:43,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:43,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 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 593 [2023-12-20 17:10:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:44,156 INFO L225 Difference]: With dead ends: 606193 [2023-12-20 17:10:44,157 INFO L226 Difference]: Without dead ends: 313733 [2023-12-20 17:10:44,243 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 [2023-12-20 17:10:44,243 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 736 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:44,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1006 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:10:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313733 states. [2023-12-20 17:10:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313733 to 309781. [2023-12-20 17:10:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309781 states, 309780 states have (on average 1.0388630641100136) internal successors, (321819), 309780 states have internal predecessors, (321819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309781 states to 309781 states and 321819 transitions. [2023-12-20 17:10:48,231 INFO L78 Accepts]: Start accepts. Automaton has 309781 states and 321819 transitions. Word has length 593 [2023-12-20 17:10:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:48,231 INFO L495 AbstractCegarLoop]: Abstraction has 309781 states and 321819 transitions. [2023-12-20 17:10:48,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 309781 states and 321819 transitions. [2023-12-20 17:10:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-20 17:10:48,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:48,243 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:48,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:10:48,243 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:48,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:48,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1798081101, now seen corresponding path program 1 times [2023-12-20 17:10:48,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:48,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595717885] [2023-12-20 17:10:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:48,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 147 proven. 638 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:10:49,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:49,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595717885] [2023-12-20 17:10:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595717885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:10:49,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046633999] [2023-12-20 17:10:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:49,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:10:49,140 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) [2023-12-20 17:10:49,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 17:10:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:49,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:10:49,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:10:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2023-12-20 17:10:49,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:10:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046633999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:49,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:10:49,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 17:10:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129672033] [2023-12-20 17:10:49,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:49,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:10:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:10:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:10:49,628 INFO L87 Difference]: Start difference. First operand 309781 states and 321819 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:56,033 INFO L93 Difference]: Finished difference Result 669300 states and 695313 transitions. [2023-12-20 17:10:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:10:56,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 635 [2023-12-20 17:10:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:56,885 INFO L225 Difference]: With dead ends: 669300 [2023-12-20 17:10:56,885 INFO L226 Difference]: Without dead ends: 360307 [2023-12-20 17:10:56,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:10:56,986 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 1662 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 5486 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 6183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 5486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:56,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 749 Invalid, 6183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 5486 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 17:10:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360307 states. [2023-12-20 17:11:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360307 to 349158. [2023-12-20 17:11:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349158 states, 349157 states have (on average 1.0389681432707922) internal successors, (362763), 349157 states have internal predecessors, (362763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349158 states to 349158 states and 362763 transitions. [2023-12-20 17:11:01,554 INFO L78 Accepts]: Start accepts. Automaton has 349158 states and 362763 transitions. Word has length 635 [2023-12-20 17:11:01,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:11:01,554 INFO L495 AbstractCegarLoop]: Abstraction has 349158 states and 362763 transitions. [2023-12-20 17:11:01,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:01,555 INFO L276 IsEmpty]: Start isEmpty. Operand 349158 states and 362763 transitions. [2023-12-20 17:11:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2023-12-20 17:11:01,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:11:01,604 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:11:01,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 17:11:01,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:11:01,809 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:11:01,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:11:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1266199676, now seen corresponding path program 1 times [2023-12-20 17:11:01,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:11:01,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274524448] [2023-12-20 17:11:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:01,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:11:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 414 proven. 228 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-20 17:11:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:11:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274524448] [2023-12-20 17:11:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274524448] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:11:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376765392] [2023-12-20 17:11:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:02,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:11:02,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:11:02,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:11:02,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 17:11:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:02,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:11:02,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:11:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 414 proven. 228 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-20 17:11:03,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:11:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 414 proven. 228 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-20 17:11:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376765392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:11:04,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:11:04,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-20 17:11:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677017461] [2023-12-20 17:11:04,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:11:04,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 17:11:04,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:11:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 17:11:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:11:04,121 INFO L87 Difference]: Start difference. First operand 349158 states and 362763 transitions. Second operand has 6 states, 6 states have (on average 199.5) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)