/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/Problem16_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:10:51,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:10:51,755 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:10:51,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:10:51,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:10:51,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:10:51,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:10:51,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:10:51,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:10:51,800 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:10:51,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:10:51,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:10:51,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:10:51,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:10:51,803 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:10:51,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:10:51,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:10:51,804 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:10:51,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:10:51,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:10:51,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:10:51,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:10:51,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:10:51,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:10:51,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:10:51,805 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:10:51,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:10:51,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:10:51,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:10:51,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:10:51,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:10:51,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:10:51,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:10:51,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:10:51,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:10:51,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:10:51,808 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:10:51,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:10:51,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:10:51,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:10:51,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:10:51,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:10:51,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:10:51,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:10:52,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:10:52,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:10:52,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:10:52,042 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:10:52,042 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:10:52,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label37.c [2023-12-16 02:10:53,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:10:53,465 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:10:53,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label37.c [2023-12-16 02:10:53,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51d1fda6/babe40e0e97a42d5b58926074f3fa63a/FLAGfee97c179 [2023-12-16 02:10:53,492 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51d1fda6/babe40e0e97a42d5b58926074f3fa63a [2023-12-16 02:10:53,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:10:53,495 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:10:53,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:10:53,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:10:53,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:10:53,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:10:53" (1/1) ... [2023-12-16 02:10:53,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20bb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:53, skipping insertion in model container [2023-12-16 02:10:53,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:10:53" (1/1) ... [2023-12-16 02:10:53,541 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:10:53,740 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label37.c[2305,2318] [2023-12-16 02:10:54,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:10:54,019 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:10:54,029 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label37.c[2305,2318] [2023-12-16 02:10:54,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:10:54,166 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:10:54,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54 WrapperNode [2023-12-16 02:10:54,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:10:54,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:10:54,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:10:54,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:10:54,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,310 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2023-12-16 02:10:54,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:10:54,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:10:54,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:10:54,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:10:54,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,370 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:10:54,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:10:54,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:10:54,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:10:54,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:10:54,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (1/1) ... [2023-12-16 02:10:54,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:10:54,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:10:54,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:10:54,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:10:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:10:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:10:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:10:54,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:10:54,670 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:10:54,672 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:10:55,933 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:10:55,963 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:10:55,963 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:10:55,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:10:55 BoogieIcfgContainer [2023-12-16 02:10:55,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:10:55,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:10:55,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:10:55,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:10:55,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:10:53" (1/3) ... [2023-12-16 02:10:55,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f97b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:10:55, skipping insertion in model container [2023-12-16 02:10:55,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:10:54" (2/3) ... [2023-12-16 02:10:55,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f97b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:10:55, skipping insertion in model container [2023-12-16 02:10:55,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:10:55" (3/3) ... [2023-12-16 02:10:55,970 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label37.c [2023-12-16 02:10:55,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:10:55,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:10:56,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:10:56,020 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;@51ebd609, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:10:56,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:10:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 02:10:56,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:10:56,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:10:56,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:10:56,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:10:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1055053910, now seen corresponding path program 1 times [2023-12-16 02:10:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:10:56,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145989779] [2023-12-16 02:10:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:10:56,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:10:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:10:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:10:56,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:10:56,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145989779] [2023-12-16 02:10:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145989779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:10:56,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:10:56,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:10:56,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388615391] [2023-12-16 02:10:56,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:10:56,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:10:56,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:10:56,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:10:56,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:10:56,162 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:10:56,239 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2023-12-16 02:10:56,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:10:56,245 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-16 02:10:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:10:56,253 INFO L225 Difference]: With dead ends: 667 [2023-12-16 02:10:56,253 INFO L226 Difference]: Without dead ends: 332 [2023-12-16 02:10:56,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:10:56,258 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:10:56,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:10:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-16 02:10:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-12-16 02:10:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2023-12-16 02:10:56,368 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 19 [2023-12-16 02:10:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:10:56,368 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2023-12-16 02:10:56,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2023-12-16 02:10:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 02:10:56,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:10:56,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:10:56,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:10:56,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:10:56,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:10:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2101873543, now seen corresponding path program 1 times [2023-12-16 02:10:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:10:56,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72014187] [2023-12-16 02:10:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:10:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:10:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:10:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:10:56,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:10:56,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72014187] [2023-12-16 02:10:56,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72014187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:10:56,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:10:56,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:10:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238370110] [2023-12-16 02:10:56,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:10:56,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:10:56,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:10:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:10:56,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:10:56,451 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:57,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:10:57,784 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2023-12-16 02:10:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:10:57,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-16 02:10:57,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:10:57,794 INFO L225 Difference]: With dead ends: 992 [2023-12-16 02:10:57,806 INFO L226 Difference]: Without dead ends: 661 [2023-12-16 02:10:57,809 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 [2023-12-16 02:10:57,810 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 330 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:10:57,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 77 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 02:10:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-16 02:10:57,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-12-16 02:10:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.7015151515151514) internal successors, (1123), 660 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1123 transitions. [2023-12-16 02:10:57,870 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1123 transitions. Word has length 19 [2023-12-16 02:10:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:10:57,870 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1123 transitions. [2023-12-16 02:10:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1123 transitions. [2023-12-16 02:10:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 02:10:57,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:10:57,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:10:57,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:10:57,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:10:57,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:10:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash -755206650, now seen corresponding path program 1 times [2023-12-16 02:10:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:10:57,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671230470] [2023-12-16 02:10:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:10:57,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:10:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:10:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:10:58,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:10:58,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671230470] [2023-12-16 02:10:58,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671230470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:10:58,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:10:58,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:10:58,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422944946] [2023-12-16 02:10:58,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:10:58,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:10:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:10:58,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:10:58,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:10:58,169 INFO L87 Difference]: Start difference. First operand 661 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:10:59,244 INFO L93 Difference]: Finished difference Result 1979 states and 3366 transitions. [2023-12-16 02:10:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:10:59,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-12-16 02:10:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:10:59,249 INFO L225 Difference]: With dead ends: 1979 [2023-12-16 02:10:59,249 INFO L226 Difference]: Without dead ends: 1319 [2023-12-16 02:10:59,250 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 [2023-12-16 02:10:59,251 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 343 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:10:59,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 75 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:10:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-12-16 02:10:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2023-12-16 02:10:59,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.6206373292867982) internal successors, (2136), 1318 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2136 transitions. [2023-12-16 02:10:59,273 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2136 transitions. Word has length 85 [2023-12-16 02:10:59,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:10:59,273 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 2136 transitions. [2023-12-16 02:10:59,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:10:59,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2136 transitions. [2023-12-16 02:10:59,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 02:10:59,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:10:59,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:10:59,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:10:59,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:10:59,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:10:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1955472766, now seen corresponding path program 1 times [2023-12-16 02:10:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:10:59,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596551569] [2023-12-16 02:10:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:10:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:10:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:10:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:10:59,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:10:59,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596551569] [2023-12-16 02:10:59,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596551569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:10:59,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:10:59,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:10:59,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961369907] [2023-12-16 02:10:59,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:10:59,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:10:59,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:10:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:10:59,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:10:59,351 INFO L87 Difference]: Start difference. First operand 1319 states and 2136 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:00,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:00,354 INFO L93 Difference]: Finished difference Result 3295 states and 5284 transitions. [2023-12-16 02:11:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:00,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 02:11:00,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:00,361 INFO L225 Difference]: With dead ends: 3295 [2023-12-16 02:11:00,361 INFO L226 Difference]: Without dead ends: 1977 [2023-12-16 02:11:00,362 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 [2023-12-16 02:11:00,363 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 381 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:00,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 153 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:11:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-12-16 02:11:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1977. [2023-12-16 02:11:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1976 states have (on average 1.33248987854251) internal successors, (2633), 1976 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2633 transitions. [2023-12-16 02:11:00,435 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2633 transitions. Word has length 86 [2023-12-16 02:11:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:00,436 INFO L495 AbstractCegarLoop]: Abstraction has 1977 states and 2633 transitions. [2023-12-16 02:11:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2633 transitions. [2023-12-16 02:11:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-16 02:11:00,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:00,439 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 02:11:00,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:11:00,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:00,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -430353384, now seen corresponding path program 1 times [2023-12-16 02:11:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:00,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732393497] [2023-12-16 02:11:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732393497] [2023-12-16 02:11:00,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732393497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:00,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:00,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:11:00,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928132439] [2023-12-16 02:11:00,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:00,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:00,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:00,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:00,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:00,696 INFO L87 Difference]: Start difference. First operand 1977 states and 2633 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:01,784 INFO L93 Difference]: Finished difference Result 5927 states and 7896 transitions. [2023-12-16 02:11:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:01,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2023-12-16 02:11:01,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:01,796 INFO L225 Difference]: With dead ends: 5927 [2023-12-16 02:11:01,796 INFO L226 Difference]: Without dead ends: 3951 [2023-12-16 02:11:01,799 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 [2023-12-16 02:11:01,800 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 181 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:01,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 257 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:11:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-16 02:11:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-16 02:11:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.2164556962025317) internal successors, (4805), 3950 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4805 transitions. [2023-12-16 02:11:01,852 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4805 transitions. Word has length 178 [2023-12-16 02:11:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:01,853 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 4805 transitions. [2023-12-16 02:11:01,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4805 transitions. [2023-12-16 02:11:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-16 02:11:01,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:01,859 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 02:11:01,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:11:01,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:01,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash 431089153, now seen corresponding path program 1 times [2023-12-16 02:11:01,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:01,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717600919] [2023-12-16 02:11:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:01,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:02,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:02,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717600919] [2023-12-16 02:11:02,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717600919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:02,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:02,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:02,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041147222] [2023-12-16 02:11:02,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:02,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:11:02,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:02,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:11:02,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:11:02,299 INFO L87 Difference]: Start difference. First operand 3951 states and 4805 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:03,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:03,350 INFO L93 Difference]: Finished difference Result 8242 states and 9962 transitions. [2023-12-16 02:11:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:11:03,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2023-12-16 02:11:03,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:03,361 INFO L225 Difference]: With dead ends: 8242 [2023-12-16 02:11:03,361 INFO L226 Difference]: Without dead ends: 4292 [2023-12-16 02:11:03,366 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 [2023-12-16 02:11:03,367 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 173 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:03,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 362 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:11:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2023-12-16 02:11:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4280. [2023-12-16 02:11:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4279 states have (on average 1.2012152372049545) internal successors, (5140), 4279 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5140 transitions. [2023-12-16 02:11:03,425 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5140 transitions. Word has length 264 [2023-12-16 02:11:03,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:03,426 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 5140 transitions. [2023-12-16 02:11:03,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5140 transitions. [2023-12-16 02:11:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-16 02:11:03,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:03,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:03,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:11:03,430 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:03,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1110279900, now seen corresponding path program 1 times [2023-12-16 02:11:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:03,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892192974] [2023-12-16 02:11:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892192974] [2023-12-16 02:11:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892192974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:03,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:03,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 02:11:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566770873] [2023-12-16 02:11:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:03,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:11:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:03,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:11:03,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:03,831 INFO L87 Difference]: Start difference. First operand 4280 states and 5140 transitions. Second operand has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:05,310 INFO L93 Difference]: Finished difference Result 8089 states and 9791 transitions. [2023-12-16 02:11:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 02:11:05,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 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 351 [2023-12-16 02:11:05,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:05,320 INFO L225 Difference]: With dead ends: 8089 [2023-12-16 02:11:05,320 INFO L226 Difference]: Without dead ends: 3951 [2023-12-16 02:11:05,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:05,323 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 288 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:05,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 293 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:11:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-16 02:11:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-16 02:11:05,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.080253164556962) internal successors, (4267), 3950 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4267 transitions. [2023-12-16 02:11:05,384 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4267 transitions. Word has length 351 [2023-12-16 02:11:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:05,384 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 4267 transitions. [2023-12-16 02:11:05,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4267 transitions. [2023-12-16 02:11:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-16 02:11:05,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:05,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:11:05,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:05,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1982629094, now seen corresponding path program 1 times [2023-12-16 02:11:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777714306] [2023-12-16 02:11:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-16 02:11:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777714306] [2023-12-16 02:11:05,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777714306] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987041625] [2023-12-16 02:11:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:05,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:05,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:05,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:11:05,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:11:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:05,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:11:05,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 02:11:05,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:11:05,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987041625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:05,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:11:05,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 02:11:05,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18253985] [2023-12-16 02:11:05,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:05,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:05,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:05,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:11:05,985 INFO L87 Difference]: Start difference. First operand 3951 states and 4267 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:06,766 INFO L93 Difference]: Finished difference Result 9546 states and 10413 transitions. [2023-12-16 02:11:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:06,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 358 [2023-12-16 02:11:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:06,780 INFO L225 Difference]: With dead ends: 9546 [2023-12-16 02:11:06,780 INFO L226 Difference]: Without dead ends: 5925 [2023-12-16 02:11:06,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:11:06,786 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 328 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:06,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 38 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:11:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2023-12-16 02:11:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5925. [2023-12-16 02:11:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5925 states, 5924 states have (on average 1.0828831870357867) internal successors, (6415), 5924 states have internal predecessors, (6415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5925 states to 5925 states and 6415 transitions. [2023-12-16 02:11:06,873 INFO L78 Accepts]: Start accepts. Automaton has 5925 states and 6415 transitions. Word has length 358 [2023-12-16 02:11:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:06,874 INFO L495 AbstractCegarLoop]: Abstraction has 5925 states and 6415 transitions. [2023-12-16 02:11:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5925 states and 6415 transitions. [2023-12-16 02:11:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 02:11:06,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:06,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:11:06,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:11:07,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:07,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:07,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1032875318, now seen corresponding path program 1 times [2023-12-16 02:11:07,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:07,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826230357] [2023-12-16 02:11:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:07,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-16 02:11:07,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826230357] [2023-12-16 02:11:07,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826230357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567636853] [2023-12-16 02:11:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:07,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:07,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:11:07,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:11:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:07,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:11:07,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 02:11:07,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:11:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567636853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:07,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:11:07,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 02:11:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292038909] [2023-12-16 02:11:07,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:07,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:07,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:07,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:11:07,710 INFO L87 Difference]: Start difference. First operand 5925 states and 6415 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:08,479 INFO L93 Difference]: Finished difference Result 13494 states and 14709 transitions. [2023-12-16 02:11:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 475 [2023-12-16 02:11:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:08,510 INFO L225 Difference]: With dead ends: 13494 [2023-12-16 02:11:08,510 INFO L226 Difference]: Without dead ends: 7899 [2023-12-16 02:11:08,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:11:08,518 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 329 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:08,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 31 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:11:08,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2023-12-16 02:11:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7570. [2023-12-16 02:11:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.0908970801955344) internal successors, (8257), 7569 states have internal predecessors, (8257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 8257 transitions. [2023-12-16 02:11:08,629 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 8257 transitions. Word has length 475 [2023-12-16 02:11:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:08,630 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 8257 transitions. [2023-12-16 02:11:08,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 8257 transitions. [2023-12-16 02:11:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 02:11:08,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:08,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:08,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:11:08,844 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,SelfDestructingSolverStorable8 [2023-12-16 02:11:08,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:08,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:08,845 INFO L85 PathProgramCache]: Analyzing trace with hash -853453568, now seen corresponding path program 1 times [2023-12-16 02:11:08,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:08,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550912016] [2023-12-16 02:11:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:08,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 35 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550912016] [2023-12-16 02:11:09,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550912016] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433425721] [2023-12-16 02:11:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:09,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:09,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:11:09,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:11:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:09,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:11:09,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-16 02:11:10,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:11:10,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433425721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:10,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:11:10,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 02:11:10,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028728355] [2023-12-16 02:11:10,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:10,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:10,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:11:10,386 INFO L87 Difference]: Start difference. First operand 7570 states and 8257 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:11,064 INFO L93 Difference]: Finished difference Result 9546 states and 10296 transitions. [2023-12-16 02:11:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:11,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 542 [2023-12-16 02:11:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:11,103 INFO L225 Difference]: With dead ends: 9546 [2023-12-16 02:11:11,103 INFO L226 Difference]: Without dead ends: 9544 [2023-12-16 02:11:11,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:11:11,118 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 63 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:11,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 81 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:11:11,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2023-12-16 02:11:11,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 7570. [2023-12-16 02:11:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.090764962346413) internal successors, (8256), 7569 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:11,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 8256 transitions. [2023-12-16 02:11:11,214 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 8256 transitions. Word has length 542 [2023-12-16 02:11:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:11,215 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 8256 transitions. [2023-12-16 02:11:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 8256 transitions. [2023-12-16 02:11:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2023-12-16 02:11:11,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:11,235 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:11:11,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:11:11,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:11,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:11,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash 454672487, now seen corresponding path program 1 times [2023-12-16 02:11:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177248495] [2023-12-16 02:11:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2023-12-16 02:11:12,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:12,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177248495] [2023-12-16 02:11:12,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177248495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:12,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:12,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:11:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999024537] [2023-12-16 02:11:12,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:12,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:12,348 INFO L87 Difference]: Start difference. First operand 7570 states and 8256 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 2 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:12,913 INFO L93 Difference]: Finished difference Result 15139 states and 16517 transitions. [2023-12-16 02:11:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 2 states have internal predecessors, (397), 0 states have call successors, (0), 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 888 [2023-12-16 02:11:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:12,929 INFO L225 Difference]: With dead ends: 15139 [2023-12-16 02:11:12,929 INFO L226 Difference]: Without dead ends: 7899 [2023-12-16 02:11:12,934 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 [2023-12-16 02:11:12,935 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 85 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:12,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 108 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:11:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2023-12-16 02:11:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7899. [2023-12-16 02:11:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 7898 states have (on average 1.0878703469232718) internal successors, (8592), 7898 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 8592 transitions. [2023-12-16 02:11:13,015 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 8592 transitions. Word has length 888 [2023-12-16 02:11:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:13,016 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 8592 transitions. [2023-12-16 02:11:13,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 2 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 8592 transitions. [2023-12-16 02:11:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2023-12-16 02:11:13,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:13,028 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:13,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 02:11:13,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:13,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash -912143789, now seen corresponding path program 1 times [2023-12-16 02:11:13,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:13,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98620010] [2023-12-16 02:11:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:13,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 888 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2023-12-16 02:11:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98620010] [2023-12-16 02:11:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98620010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:13,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:13,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:13,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472614255] [2023-12-16 02:11:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:13,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:13,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:13,467 INFO L87 Difference]: Start difference. First operand 7899 states and 8592 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:14,291 INFO L93 Difference]: Finished difference Result 19416 states and 21298 transitions. [2023-12-16 02:11:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 896 [2023-12-16 02:11:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:14,304 INFO L225 Difference]: With dead ends: 19416 [2023-12-16 02:11:14,304 INFO L226 Difference]: Without dead ends: 10531 [2023-12-16 02:11:14,311 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 [2023-12-16 02:11:14,312 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 270 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:14,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 427 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:11:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10531 states. [2023-12-16 02:11:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10531 to 10202. [2023-12-16 02:11:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10202 states, 10201 states have (on average 1.0729340260758748) internal successors, (10945), 10201 states have internal predecessors, (10945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10202 states to 10202 states and 10945 transitions. [2023-12-16 02:11:14,395 INFO L78 Accepts]: Start accepts. Automaton has 10202 states and 10945 transitions. Word has length 896 [2023-12-16 02:11:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:14,395 INFO L495 AbstractCegarLoop]: Abstraction has 10202 states and 10945 transitions. [2023-12-16 02:11:14,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10202 states and 10945 transitions. [2023-12-16 02:11:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1192 [2023-12-16 02:11:14,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:14,413 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:14,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 02:11:14,413 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:14,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1082786834, now seen corresponding path program 1 times [2023-12-16 02:11:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:14,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735659328] [2023-12-16 02:11:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 1775 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-12-16 02:11:15,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735659328] [2023-12-16 02:11:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735659328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:15,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:15,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 02:11:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175343294] [2023-12-16 02:11:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:15,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:11:15,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:15,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:11:15,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:11:15,651 INFO L87 Difference]: Start difference. First operand 10202 states and 10945 transitions. Second operand has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:16,704 INFO L93 Difference]: Finished difference Result 20433 states and 21937 transitions. [2023-12-16 02:11:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 02:11:16,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 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 1191 [2023-12-16 02:11:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:16,718 INFO L225 Difference]: With dead ends: 20433 [2023-12-16 02:11:16,718 INFO L226 Difference]: Without dead ends: 10890 [2023-12-16 02:11:16,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:16,726 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 452 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:16,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 562 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:11:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10890 states. [2023-12-16 02:11:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10890 to 10860. [2023-12-16 02:11:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 10859 states have (on average 1.0689750437425176) internal successors, (11608), 10859 states have internal predecessors, (11608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 11608 transitions. [2023-12-16 02:11:16,812 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 11608 transitions. Word has length 1191 [2023-12-16 02:11:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:16,813 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 11608 transitions. [2023-12-16 02:11:16,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 11608 transitions. [2023-12-16 02:11:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2023-12-16 02:11:16,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:16,831 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:16,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 02:11:16,831 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:16,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash 548788443, now seen corresponding path program 1 times [2023-12-16 02:11:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:16,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267910806] [2023-12-16 02:11:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:16,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1699 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-12-16 02:11:18,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267910806] [2023-12-16 02:11:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267910806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:18,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:18,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:11:18,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131015105] [2023-12-16 02:11:18,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:18,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:11:18,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:18,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:11:18,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:11:18,078 INFO L87 Difference]: Start difference. First operand 10860 states and 11608 transitions. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:18,977 INFO L93 Difference]: Finished difference Result 21070 states and 22557 transitions. [2023-12-16 02:11:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:11:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 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 1205 [2023-12-16 02:11:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:18,994 INFO L225 Difference]: With dead ends: 21070 [2023-12-16 02:11:18,994 INFO L226 Difference]: Without dead ends: 10869 [2023-12-16 02:11:19,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:11:19,004 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 262 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:19,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 439 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:11:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10869 states. [2023-12-16 02:11:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10869 to 10531. [2023-12-16 02:11:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10531 states, 10530 states have (on average 1.070275403608737) internal successors, (11270), 10530 states have internal predecessors, (11270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10531 states to 10531 states and 11270 transitions. [2023-12-16 02:11:19,104 INFO L78 Accepts]: Start accepts. Automaton has 10531 states and 11270 transitions. Word has length 1205 [2023-12-16 02:11:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:19,105 INFO L495 AbstractCegarLoop]: Abstraction has 10531 states and 11270 transitions. [2023-12-16 02:11:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 10531 states and 11270 transitions. [2023-12-16 02:11:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2023-12-16 02:11:19,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:19,125 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:19,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 02:11:19,126 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:19,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash 690112979, now seen corresponding path program 1 times [2023-12-16 02:11:19,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:19,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408042473] [2023-12-16 02:11:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:19,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2733 backedges. 920 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2023-12-16 02:11:19,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:19,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408042473] [2023-12-16 02:11:19,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408042473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:19,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:19,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:19,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256395656] [2023-12-16 02:11:19,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:19,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:19,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:19,828 INFO L87 Difference]: Start difference. First operand 10531 states and 11270 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:20,555 INFO L93 Difference]: Finished difference Result 23364 states and 25034 transitions. [2023-12-16 02:11:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 1207 [2023-12-16 02:11:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:20,567 INFO L225 Difference]: With dead ends: 23364 [2023-12-16 02:11:20,567 INFO L226 Difference]: Without dead ends: 11847 [2023-12-16 02:11:20,574 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 [2023-12-16 02:11:20,574 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 172 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:20,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 407 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:11:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2023-12-16 02:11:20,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 11847. [2023-12-16 02:11:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11847 states, 11846 states have (on average 1.049805841634307) internal successors, (12436), 11846 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11847 states to 11847 states and 12436 transitions. [2023-12-16 02:11:20,656 INFO L78 Accepts]: Start accepts. Automaton has 11847 states and 12436 transitions. Word has length 1207 [2023-12-16 02:11:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:20,657 INFO L495 AbstractCegarLoop]: Abstraction has 11847 states and 12436 transitions. [2023-12-16 02:11:20,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 11847 states and 12436 transitions. [2023-12-16 02:11:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1340 [2023-12-16 02:11:20,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:20,681 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:20,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:11:20,681 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:20,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash 295854769, now seen corresponding path program 1 times [2023-12-16 02:11:20,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:20,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921908013] [2023-12-16 02:11:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:20,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3662 backedges. 2452 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-12-16 02:11:21,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:21,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921908013] [2023-12-16 02:11:21,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921908013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:21,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:21,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:21,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580137506] [2023-12-16 02:11:21,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:21,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:21,259 INFO L87 Difference]: Start difference. First operand 11847 states and 12436 transitions. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:21,964 INFO L93 Difference]: Finished difference Result 24022 states and 25230 transitions. [2023-12-16 02:11:21,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:21,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 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 1339 [2023-12-16 02:11:21,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:21,978 INFO L225 Difference]: With dead ends: 24022 [2023-12-16 02:11:21,978 INFO L226 Difference]: Without dead ends: 12834 [2023-12-16 02:11:21,987 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 [2023-12-16 02:11:21,987 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 195 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:21,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 415 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:11:21,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2023-12-16 02:11:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 12505. [2023-12-16 02:11:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12505 states, 12504 states have (on average 1.0407869481765835) internal successors, (13014), 12504 states have internal predecessors, (13014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:22,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12505 states to 12505 states and 13014 transitions. [2023-12-16 02:11:22,104 INFO L78 Accepts]: Start accepts. Automaton has 12505 states and 13014 transitions. Word has length 1339 [2023-12-16 02:11:22,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:22,104 INFO L495 AbstractCegarLoop]: Abstraction has 12505 states and 13014 transitions. [2023-12-16 02:11:22,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 12505 states and 13014 transitions. [2023-12-16 02:11:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1365 [2023-12-16 02:11:22,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:22,125 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 02:11:22,126 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:22,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1454099177, now seen corresponding path program 1 times [2023-12-16 02:11:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675827195] [2023-12-16 02:11:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3837 backedges. 2333 proven. 0 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2023-12-16 02:11:23,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:23,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675827195] [2023-12-16 02:11:23,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675827195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:23,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:23,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:23,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119362072] [2023-12-16 02:11:23,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:23,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:23,184 INFO L87 Difference]: Start difference. First operand 12505 states and 13014 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:23,911 INFO L93 Difference]: Finished difference Result 25009 states and 26053 transitions. [2023-12-16 02:11:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1364 [2023-12-16 02:11:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:23,925 INFO L225 Difference]: With dead ends: 25009 [2023-12-16 02:11:23,925 INFO L226 Difference]: Without dead ends: 13163 [2023-12-16 02:11:23,933 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 [2023-12-16 02:11:23,934 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 224 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:23,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 429 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:11:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-16 02:11:24,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-16 02:11:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0382160765841058) internal successors, (13665), 13162 states have internal predecessors, (13665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13665 transitions. [2023-12-16 02:11:24,035 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13665 transitions. Word has length 1364 [2023-12-16 02:11:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:24,036 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13665 transitions. [2023-12-16 02:11:24,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13665 transitions. [2023-12-16 02:11:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2023-12-16 02:11:24,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:24,054 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:24,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 02:11:24,054 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:24,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:24,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1582120483, now seen corresponding path program 1 times [2023-12-16 02:11:24,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:24,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184087503] [2023-12-16 02:11:24,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:24,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3413 backedges. 2413 proven. 0 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2023-12-16 02:11:25,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:25,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184087503] [2023-12-16 02:11:25,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184087503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:25,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:25,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:11:25,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801807981] [2023-12-16 02:11:25,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:25,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:11:25,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:25,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:11:25,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:11:25,005 INFO L87 Difference]: Start difference. First operand 13163 states and 13665 transitions. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:25,862 INFO L93 Difference]: Finished difference Result 25701 states and 26696 transitions. [2023-12-16 02:11:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:11:25,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 1389 [2023-12-16 02:11:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:25,874 INFO L225 Difference]: With dead ends: 25701 [2023-12-16 02:11:25,874 INFO L226 Difference]: Without dead ends: 13197 [2023-12-16 02:11:25,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:11:25,883 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 166 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:25,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 549 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:11:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13197 states. [2023-12-16 02:11:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13197 to 13163. [2023-12-16 02:11:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0373043610393557) internal successors, (13653), 13162 states have internal predecessors, (13653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13653 transitions. [2023-12-16 02:11:25,977 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13653 transitions. Word has length 1389 [2023-12-16 02:11:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:25,978 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13653 transitions. [2023-12-16 02:11:25,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13653 transitions. [2023-12-16 02:11:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1419 [2023-12-16 02:11:25,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:25,999 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:26,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 02:11:26,000 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:26,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1351735954, now seen corresponding path program 1 times [2023-12-16 02:11:26,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:26,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559564190] [2023-12-16 02:11:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:26,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3837 backedges. 1109 proven. 0 refuted. 0 times theorem prover too weak. 2728 trivial. 0 not checked. [2023-12-16 02:11:27,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:27,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559564190] [2023-12-16 02:11:27,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559564190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:27,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:27,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:27,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384450079] [2023-12-16 02:11:27,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:27,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:27,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:27,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:27,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:27,111 INFO L87 Difference]: Start difference. First operand 13163 states and 13653 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:27,831 INFO L93 Difference]: Finished difference Result 25996 states and 26974 transitions. [2023-12-16 02:11:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:27,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 1418 [2023-12-16 02:11:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:27,844 INFO L225 Difference]: With dead ends: 25996 [2023-12-16 02:11:27,844 INFO L226 Difference]: Without dead ends: 13163 [2023-12-16 02:11:27,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:27,852 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 169 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:27,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 366 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:11:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-16 02:11:27,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-16 02:11:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.030618447044522) internal successors, (13565), 13162 states have internal predecessors, (13565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13565 transitions. [2023-12-16 02:11:27,953 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13565 transitions. Word has length 1418 [2023-12-16 02:11:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:27,953 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13565 transitions. [2023-12-16 02:11:27,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13565 transitions. [2023-12-16 02:11:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2023-12-16 02:11:27,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:27,974 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-16 02:11:27,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 02:11:27,974 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:27,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1337234437, now seen corresponding path program 1 times [2023-12-16 02:11:27,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:27,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096845847] [2023-12-16 02:11:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:27,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 2715 proven. 202 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-12-16 02:11:29,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:29,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096845847] [2023-12-16 02:11:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096845847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:29,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363275835] [2023-12-16 02:11:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:29,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:29,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:11:29,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:11:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:29,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:11:29,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 2233 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2023-12-16 02:11:30,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:11:30,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363275835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:30,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:11:30,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-16 02:11:30,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020874493] [2023-12-16 02:11:30,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:30,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:30,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:30,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:30,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:30,140 INFO L87 Difference]: Start difference. First operand 13163 states and 13565 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:30,804 INFO L93 Difference]: Finished difference Result 25667 states and 26464 transitions. [2023-12-16 02:11:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 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 1511 [2023-12-16 02:11:30,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:30,818 INFO L225 Difference]: With dead ends: 25667 [2023-12-16 02:11:30,818 INFO L226 Difference]: Without dead ends: 13163 [2023-12-16 02:11:30,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1515 GetRequests, 1510 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:30,826 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 93 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:30,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 374 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:11:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-16 02:11:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-16 02:11:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0289469685458137) internal successors, (13543), 13162 states have internal predecessors, (13543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13543 transitions. [2023-12-16 02:11:30,973 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13543 transitions. Word has length 1511 [2023-12-16 02:11:30,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:30,974 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13543 transitions. [2023-12-16 02:11:30,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13543 transitions. [2023-12-16 02:11:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1747 [2023-12-16 02:11:30,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:30,998 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:31,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 02:11:31,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:31,211 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:31,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:31,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1598699848, now seen corresponding path program 1 times [2023-12-16 02:11:31,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:31,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565802945] [2023-12-16 02:11:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:31,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 4080 proven. 90 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2023-12-16 02:11:32,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:32,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565802945] [2023-12-16 02:11:32,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565802945] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:32,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171246680] [2023-12-16 02:11:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:32,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:32,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:32,997 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:11:32,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:11:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:33,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:11:33,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 2334 proven. 0 refuted. 0 times theorem prover too weak. 2919 trivial. 0 not checked. [2023-12-16 02:11:34,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:11:34,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171246680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:34,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:11:34,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-16 02:11:34,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032386879] [2023-12-16 02:11:34,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:34,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:34,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:34,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:34,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:11:34,439 INFO L87 Difference]: Start difference. First operand 13163 states and 13543 transitions. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 2 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:35,110 INFO L93 Difference]: Finished difference Result 25667 states and 26420 transitions. [2023-12-16 02:11:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:35,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 2 states have internal predecessors, (583), 0 states have call successors, (0), 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 1746 [2023-12-16 02:11:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:35,122 INFO L225 Difference]: With dead ends: 25667 [2023-12-16 02:11:35,122 INFO L226 Difference]: Without dead ends: 13163 [2023-12-16 02:11:35,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1752 GetRequests, 1746 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:11:35,138 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 87 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:35,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 79 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:11:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-16 02:11:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-16 02:11:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0288709922504178) internal successors, (13542), 13162 states have internal predecessors, (13542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13542 transitions. [2023-12-16 02:11:35,240 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13542 transitions. Word has length 1746 [2023-12-16 02:11:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:35,240 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13542 transitions. [2023-12-16 02:11:35,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 2 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13542 transitions. [2023-12-16 02:11:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1777 [2023-12-16 02:11:35,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:35,266 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:35,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 02:11:35,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:35,495 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:35,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1762407479, now seen corresponding path program 1 times [2023-12-16 02:11:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:35,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567634769] [2023-12-16 02:11:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:35,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5962 backedges. 2328 proven. 156 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2023-12-16 02:11:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567634769] [2023-12-16 02:11:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567634769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756758667] [2023-12-16 02:11:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:37,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:37,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:37,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:11:37,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:11:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:38,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 2059 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:11:38,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5962 backedges. 2484 proven. 0 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2023-12-16 02:11:38,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:11:38,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756758667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:38,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:11:38,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-16 02:11:38,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585694338] [2023-12-16 02:11:38,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:38,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:38,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:38,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:38,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:38,355 INFO L87 Difference]: Start difference. First operand 13163 states and 13542 transitions. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:39,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:39,081 INFO L93 Difference]: Finished difference Result 27970 states and 28797 transitions. [2023-12-16 02:11:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:39,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 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 1776 [2023-12-16 02:11:39,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:39,096 INFO L225 Difference]: With dead ends: 27970 [2023-12-16 02:11:39,096 INFO L226 Difference]: Without dead ends: 15466 [2023-12-16 02:11:39,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 1775 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:39,113 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 173 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:39,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 77 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:11:39,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2023-12-16 02:11:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 14150. [2023-12-16 02:11:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14149 states have (on average 1.0289066365114143) internal successors, (14558), 14149 states have internal predecessors, (14558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 14558 transitions. [2023-12-16 02:11:39,238 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 14558 transitions. Word has length 1776 [2023-12-16 02:11:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:39,238 INFO L495 AbstractCegarLoop]: Abstraction has 14150 states and 14558 transitions. [2023-12-16 02:11:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 14558 transitions. [2023-12-16 02:11:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1995 [2023-12-16 02:11:39,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:39,272 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-16 02:11:39,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 02:11:39,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:39,482 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:39,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash 186637648, now seen corresponding path program 1 times [2023-12-16 02:11:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453890451] [2023-12-16 02:11:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:39,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7049 backedges. 4636 proven. 170 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2023-12-16 02:11:40,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:40,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453890451] [2023-12-16 02:11:40,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453890451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891060565] [2023-12-16 02:11:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:40,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:40,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:40,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:11:40,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:11:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:41,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 2265 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 02:11:41,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7049 backedges. 4636 proven. 170 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2023-12-16 02:11:42,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:11:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7049 backedges. 4636 proven. 170 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2023-12-16 02:11:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891060565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:11:44,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 02:11:44,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-12-16 02:11:44,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161708580] [2023-12-16 02:11:44,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 02:11:44,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:11:44,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:44,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:11:44,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:44,443 INFO L87 Difference]: Start difference. First operand 14150 states and 14558 transitions. Second operand has 7 states, 7 states have (on average 142.0) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:46,542 INFO L93 Difference]: Finished difference Result 28334 states and 29160 transitions. [2023-12-16 02:11:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 02:11:46,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 142.0) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 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 1994 [2023-12-16 02:11:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:46,557 INFO L225 Difference]: With dead ends: 28334 [2023-12-16 02:11:46,558 INFO L226 Difference]: Without dead ends: 14843 [2023-12-16 02:11:46,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3995 GetRequests, 3986 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:11:46,567 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1109 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 3604 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 3723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:46,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 106 Invalid, 3723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3604 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:11:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14843 states. [2023-12-16 02:11:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14843 to 14479. [2023-12-16 02:11:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.0259013675922088) internal successors, (14853), 14478 states have internal predecessors, (14853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 14853 transitions. [2023-12-16 02:11:46,682 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 14853 transitions. Word has length 1994 [2023-12-16 02:11:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:46,682 INFO L495 AbstractCegarLoop]: Abstraction has 14479 states and 14853 transitions. [2023-12-16 02:11:46,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.0) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 14853 transitions. [2023-12-16 02:11:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2020 [2023-12-16 02:11:46,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:46,772 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-16 02:11:46,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 02:11:46,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:46,980 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:46,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1613672986, now seen corresponding path program 1 times [2023-12-16 02:11:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889221805] [2023-12-16 02:11:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7274 backedges. 4561 proven. 1745 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-12-16 02:11:50,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:50,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889221805] [2023-12-16 02:11:50,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889221805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:50,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201238299] [2023-12-16 02:11:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:50,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:50,785 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:11:50,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 02:11:51,024 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:11:51,033 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:11:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:51,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 2287 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:11:51,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:51,230 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:11:51,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 02:11:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-16 02:11:51,437 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 2020 with TraceHistMax 11,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. [2023-12-16 02:11:51,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:51,442 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:11:51,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:11:51 BoogieIcfgContainer [2023-12-16 02:11:51,443 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:11:51,444 INFO L158 Benchmark]: Toolchain (without parser) took 57948.49ms. Allocated memory was 207.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 134.9MB in the beginning and 865.2MB in the end (delta: -730.3MB). Peak memory consumption was 644.1MB. Max. memory is 8.0GB. [2023-12-16 02:11:51,444 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 207.6MB. Free memory is still 156.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:11:51,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 670.38ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 134.7MB in the beginning and 160.1MB in the end (delta: -25.4MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. [2023-12-16 02:11:51,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.92ms. Allocated memory is still 249.6MB. Free memory was 160.1MB in the beginning and 200.1MB in the end (delta: -40.0MB). Peak memory consumption was 40.3MB. Max. memory is 8.0GB. [2023-12-16 02:11:51,445 INFO L158 Benchmark]: Boogie Preprocessor took 142.63ms. Allocated memory is still 249.6MB. Free memory was 200.1MB in the beginning and 165.2MB in the end (delta: 34.9MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-16 02:11:51,445 INFO L158 Benchmark]: RCFGBuilder took 1509.02ms. Allocated memory was 249.6MB in the beginning and 390.1MB in the end (delta: 140.5MB). Free memory was 165.2MB in the beginning and 237.8MB in the end (delta: -72.6MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. [2023-12-16 02:11:51,445 INFO L158 Benchmark]: TraceAbstraction took 55478.14ms. Allocated memory was 390.1MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 237.3MB in the beginning and 865.2MB in the end (delta: -627.9MB). Peak memory consumption was 563.3MB. Max. memory is 8.0GB. [2023-12-16 02:11:51,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 207.6MB. Free memory is still 156.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 670.38ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 134.7MB in the beginning and 160.1MB in the end (delta: -25.4MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 143.92ms. Allocated memory is still 249.6MB. Free memory was 160.1MB in the beginning and 200.1MB in the end (delta: -40.0MB). Peak memory consumption was 40.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 142.63ms. Allocated memory is still 249.6MB. Free memory was 200.1MB in the beginning and 165.2MB in the end (delta: 34.9MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1509.02ms. Allocated memory was 249.6MB in the beginning and 390.1MB in the end (delta: 140.5MB). Free memory was 165.2MB in the beginning and 237.8MB in the end (delta: -72.6MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. * TraceAbstraction took 55478.14ms. Allocated memory was 390.1MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 237.3MB in the beginning and 865.2MB in the end (delta: -627.9MB). Peak memory consumption was 563.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 77). Cancelled while NwaCegarLoop was analyzing trace of length 2020 with TraceHistMax 11,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 334 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.4s, OverallIterations: 24, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 21.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5873 SdHoareTripleChecker+Valid, 19.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5873 mSDsluCounter, 6301 SdHoareTripleChecker+Invalid, 15.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 510 mSDsCounter, 2868 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23498 IncrementalHoareTripleChecker+Invalid, 26366 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2868 mSolverCounterUnsat, 5791 mSDtfsCounter, 23498 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10486 GetRequests, 10420 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14479occurred in iteration=23, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 23 MinimizatonAttempts, 5055 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 28703 NumberOfCodeBlocks, 28703 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 30666 ConstructedInterpolants, 0 QuantifiedInterpolants, 85702 SizeOfPredicates, 6 NumberOfNonLiveVariables, 9717 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 31 InterpolantComputations, 22 PerfectInterpolantSequences, 76945/78213 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown