/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:01:25,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:01:25,189 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:01:25,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:01:25,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:01:25,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:01:25,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:01:25,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:01:25,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:01:25,207 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:01:25,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:01:25,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:01:25,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:01:25,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:01:25,209 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:01:25,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:01:25,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:01:25,209 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:01:25,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:01:25,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:01:25,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:01:25,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:01:25,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:01:25,211 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:01:25,211 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:01:25,211 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:01:25,212 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:01:25,212 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:01:25,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:01:25,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:01:25,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:01:25,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:01:25,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:01:25,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:01:25,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:01:25,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:01:25,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:01:25,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:01:25,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:01:25,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:01:25,214 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:01:25,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:01:25,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:01:25,215 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:01:25,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:01:25,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:01:25,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:01:25,433 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:01:25,434 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:01:25,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c [2023-12-19 01:01:26,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:01:27,204 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:01:27,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c [2023-12-19 01:01:27,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b722467/6c4373215128442595877afba9461476/FLAG35b159ec5 [2023-12-19 01:01:27,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b722467/6c4373215128442595877afba9461476 [2023-12-19 01:01:27,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:01:27,262 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:01:27,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:01:27,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:01:27,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:01:27,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:01:27" (1/1) ... [2023-12-19 01:01:27,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7238333b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:27, skipping insertion in model container [2023-12-19 01:01:27,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:01:27" (1/1) ... [2023-12-19 01:01:27,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:01:27,705 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c[15482,15495] [2023-12-19 01:01:27,762 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c[23230,23243] [2023-12-19 01:01:28,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:01:28,277 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:01:28,316 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c[15482,15495] [2023-12-19 01:01:28,335 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c[23230,23243] [2023-12-19 01:01:28,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:01:28,708 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:01:28,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28 WrapperNode [2023-12-19 01:01:28,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:01:28,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:01:28,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:01:28,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:01:28,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:28,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,052 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5153 [2023-12-19 01:01:29,052 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:01:29,053 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:01:29,053 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:01:29,053 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:01:29,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,276 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]. [2023-12-19 01:01:29,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:01:29,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:01:29,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:01:29,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:01:29,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (1/1) ... [2023-12-19 01:01:29,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:01:29,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:01:29,529 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) [2023-12-19 01:01:29,548 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 [2023-12-19 01:01:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:01:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:01:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:01:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:01:29,640 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:01:29,642 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:01:32,731 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:01:32,778 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:01:32,779 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:01:32,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:01:32 BoogieIcfgContainer [2023-12-19 01:01:32,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:01:32,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:01:32,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:01:32,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:01:32,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:01:27" (1/3) ... [2023-12-19 01:01:32,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2f02d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:01:32, skipping insertion in model container [2023-12-19 01:01:32,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:28" (2/3) ... [2023-12-19 01:01:32,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2f02d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:01:32, skipping insertion in model container [2023-12-19 01:01:32,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:01:32" (3/3) ... [2023-12-19 01:01:32,786 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c [2023-12-19 01:01:32,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:01:32,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:01:32,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:01:32,856 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;@685d2660, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:01:32,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:01:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:01:32,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:32,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:32,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:32,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2023-12-19 01:01:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:32,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850395774] [2023-12-19 01:01:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:33,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:33,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850395774] [2023-12-19 01:01:33,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850395774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:33,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:33,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:01:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758918665] [2023-12-19 01:01:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:01:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:33,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:01:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:01:33,138 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:33,215 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-12-19 01:01:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:01:33,223 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-19 01:01:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:33,238 INFO L225 Difference]: With dead ends: 1654 [2023-12-19 01:01:33,238 INFO L226 Difference]: Without dead ends: 845 [2023-12-19 01:01:33,243 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 [2023-12-19 01:01:33,246 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:33,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-19 01:01:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-19 01:01:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-12-19 01:01:33,324 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-12-19 01:01:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:33,324 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-12-19 01:01:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-12-19 01:01:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:01:33,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:33,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:01:33,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:33,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2023-12-19 01:01:33,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:33,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099377728] [2023-12-19 01:01:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:33,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099377728] [2023-12-19 01:01:33,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099377728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:33,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:33,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:01:33,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842836741] [2023-12-19 01:01:33,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:33,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:01:33,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:01:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:01:33,634 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:33,715 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-12-19 01:01:33,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:01:33,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-19 01:01:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:33,732 INFO L225 Difference]: With dead ends: 895 [2023-12-19 01:01:33,732 INFO L226 Difference]: Without dead ends: 845 [2023-12-19 01:01:33,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:01:33,733 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:33,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-19 01:01:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-19 01:01:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-12-19 01:01:33,751 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-12-19 01:01:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:33,751 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-12-19 01:01:33,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-12-19 01:01:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 01:01:33,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:33,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:33,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:01:33,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:33,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2023-12-19 01:01:33,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:33,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986695241] [2023-12-19 01:01:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:33,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:33,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986695241] [2023-12-19 01:01:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986695241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:33,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:01:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819441070] [2023-12-19 01:01:33,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:01:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:01:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:01:33,959 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:34,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:34,349 INFO L93 Difference]: Finished difference Result 1409 states and 2471 transitions. [2023-12-19 01:01:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 01:01:34,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-19 01:01:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:34,357 INFO L225 Difference]: With dead ends: 1409 [2023-12-19 01:01:34,357 INFO L226 Difference]: Without dead ends: 1362 [2023-12-19 01:01:34,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:01:34,363 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:34,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:01:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2023-12-19 01:01:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 890. [2023-12-19 01:01:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 888 states have (on average 1.837837837837838) internal successors, (1632), 889 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:34,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1632 transitions. [2023-12-19 01:01:34,397 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1632 transitions. Word has length 62 [2023-12-19 01:01:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:34,402 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1632 transitions. [2023-12-19 01:01:34,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1632 transitions. [2023-12-19 01:01:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 01:01:34,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:34,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:34,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:01:34,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:34,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2023-12-19 01:01:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:34,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580765961] [2023-12-19 01:01:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:34,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:34,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580765961] [2023-12-19 01:01:34,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580765961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:34,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:34,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:34,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507148817] [2023-12-19 01:01:34,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:34,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:01:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:01:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:01:34,506 INFO L87 Difference]: Start difference. First operand 890 states and 1632 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:34,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:34,539 INFO L93 Difference]: Finished difference Result 1063 states and 1911 transitions. [2023-12-19 01:01:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:01:34,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-19 01:01:34,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:34,561 INFO L225 Difference]: With dead ends: 1063 [2023-12-19 01:01:34,561 INFO L226 Difference]: Without dead ends: 971 [2023-12-19 01:01:34,562 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 [2023-12-19 01:01:34,569 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:34,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-12-19 01:01:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2023-12-19 01:01:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.8179937952430196) internal successors, (1758), 968 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1758 transitions. [2023-12-19 01:01:34,597 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1758 transitions. Word has length 64 [2023-12-19 01:01:34,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:34,599 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1758 transitions. [2023-12-19 01:01:34,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:34,599 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1758 transitions. [2023-12-19 01:01:34,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 01:01:34,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:34,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:34,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:01:34,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:34,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2023-12-19 01:01:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773757847] [2023-12-19 01:01:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:34,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:34,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773757847] [2023-12-19 01:01:34,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773757847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:34,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:34,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:01:34,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732983523] [2023-12-19 01:01:34,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:34,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:01:34,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:34,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:01:34,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:01:34,928 INFO L87 Difference]: Start difference. First operand 969 states and 1758 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:35,150 INFO L93 Difference]: Finished difference Result 1142 states and 2034 transitions. [2023-12-19 01:01:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:01:35,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-19 01:01:35,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:35,154 INFO L225 Difference]: With dead ends: 1142 [2023-12-19 01:01:35,154 INFO L226 Difference]: Without dead ends: 971 [2023-12-19 01:01:35,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:01:35,157 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 6000 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6000 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:35,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6000 Valid, 1906 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:01:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-12-19 01:01:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2023-12-19 01:01:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.8159255429162358) internal successors, (1756), 968 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1756 transitions. [2023-12-19 01:01:35,173 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1756 transitions. Word has length 64 [2023-12-19 01:01:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:35,175 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1756 transitions. [2023-12-19 01:01:35,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1756 transitions. [2023-12-19 01:01:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 01:01:35,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:35,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:35,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:01:35,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:35,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:35,178 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2023-12-19 01:01:35,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:35,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138119172] [2023-12-19 01:01:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:35,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:35,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:35,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138119172] [2023-12-19 01:01:35,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138119172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:35,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:35,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:01:35,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14139433] [2023-12-19 01:01:35,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:35,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:01:35,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:35,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:01:35,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:01:35,309 INFO L87 Difference]: Start difference. First operand 969 states and 1756 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:35,340 INFO L93 Difference]: Finished difference Result 977 states and 1765 transitions. [2023-12-19 01:01:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:01:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-19 01:01:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:35,343 INFO L225 Difference]: With dead ends: 977 [2023-12-19 01:01:35,343 INFO L226 Difference]: Without dead ends: 975 [2023-12-19 01:01:35,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:01:35,344 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:35,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-19 01:01:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 973. [2023-12-19 01:01:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 971 states have (on average 1.811534500514933) internal successors, (1759), 972 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1759 transitions. [2023-12-19 01:01:35,357 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1759 transitions. Word has length 65 [2023-12-19 01:01:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:35,357 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1759 transitions. [2023-12-19 01:01:35,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1759 transitions. [2023-12-19 01:01:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:01:35,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:35,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:35,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:01:35,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:35,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2023-12-19 01:01:35,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:35,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571599385] [2023-12-19 01:01:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:35,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571599385] [2023-12-19 01:01:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571599385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:35,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866016205] [2023-12-19 01:01:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:35,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:01:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:01:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:01:35,392 INFO L87 Difference]: Start difference. First operand 973 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:35,413 INFO L93 Difference]: Finished difference Result 1159 states and 2052 transitions. [2023-12-19 01:01:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:01:35,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:01:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:35,417 INFO L225 Difference]: With dead ends: 1159 [2023-12-19 01:01:35,417 INFO L226 Difference]: Without dead ends: 1063 [2023-12-19 01:01:35,417 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 [2023-12-19 01:01:35,418 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:35,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-12-19 01:01:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2023-12-19 01:01:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1059 states have (on average 1.7903682719546743) internal successors, (1896), 1060 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1896 transitions. [2023-12-19 01:01:35,480 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1896 transitions. Word has length 66 [2023-12-19 01:01:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:35,480 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1896 transitions. [2023-12-19 01:01:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1896 transitions. [2023-12-19 01:01:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:01:35,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:35,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:35,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:01:35,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:35,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:35,482 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2023-12-19 01:01:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:35,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646843931] [2023-12-19 01:01:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:35,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646843931] [2023-12-19 01:01:35,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646843931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869558361] [2023-12-19 01:01:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:01:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:01:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:01:35,515 INFO L87 Difference]: Start difference. First operand 1061 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:35,542 INFO L93 Difference]: Finished difference Result 1559 states and 2676 transitions. [2023-12-19 01:01:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:01:35,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:01:35,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:35,547 INFO L225 Difference]: With dead ends: 1559 [2023-12-19 01:01:35,547 INFO L226 Difference]: Without dead ends: 1298 [2023-12-19 01:01:35,547 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 [2023-12-19 01:01:35,548 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:35,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-12-19 01:01:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1296. [2023-12-19 01:01:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1294 states have (on average 1.7449768160741885) internal successors, (2258), 1295 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 2258 transitions. [2023-12-19 01:01:35,576 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 2258 transitions. Word has length 66 [2023-12-19 01:01:35,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:35,577 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 2258 transitions. [2023-12-19 01:01:35,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 2258 transitions. [2023-12-19 01:01:35,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:01:35,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:35,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:35,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:01:35,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:35,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:35,578 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2023-12-19 01:01:35,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:35,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255683508] [2023-12-19 01:01:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:35,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:35,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:35,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255683508] [2023-12-19 01:01:35,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255683508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:35,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:35,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574312508] [2023-12-19 01:01:35,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:35,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:01:35,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:01:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:01:35,615 INFO L87 Difference]: Start difference. First operand 1296 states and 2258 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:35,649 INFO L93 Difference]: Finished difference Result 2240 states and 3720 transitions. [2023-12-19 01:01:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:01:35,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:01:35,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:35,656 INFO L225 Difference]: With dead ends: 2240 [2023-12-19 01:01:35,656 INFO L226 Difference]: Without dead ends: 1744 [2023-12-19 01:01:35,657 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 [2023-12-19 01:01:35,657 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:35,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2023-12-19 01:01:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1742. [2023-12-19 01:01:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1740 states have (on average 1.686206896551724) internal successors, (2934), 1741 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2934 transitions. [2023-12-19 01:01:35,714 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2934 transitions. Word has length 66 [2023-12-19 01:01:35,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:35,714 INFO L495 AbstractCegarLoop]: Abstraction has 1742 states and 2934 transitions. [2023-12-19 01:01:35,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2934 transitions. [2023-12-19 01:01:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:01:35,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:35,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:35,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:01:35,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:35,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2023-12-19 01:01:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:35,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298299630] [2023-12-19 01:01:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:35,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:35,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:35,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298299630] [2023-12-19 01:01:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298299630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:35,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348532222] [2023-12-19 01:01:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:01:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:01:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:01:35,751 INFO L87 Difference]: Start difference. First operand 1742 states and 2934 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:35,790 INFO L93 Difference]: Finished difference Result 3530 states and 5664 transitions. [2023-12-19 01:01:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:01:35,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:01:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:35,797 INFO L225 Difference]: With dead ends: 3530 [2023-12-19 01:01:35,798 INFO L226 Difference]: Without dead ends: 2588 [2023-12-19 01:01:35,799 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 [2023-12-19 01:01:35,800 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:35,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2023-12-19 01:01:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2586. [2023-12-19 01:01:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2584 states have (on average 1.6215170278637772) internal successors, (4190), 2585 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 4190 transitions. [2023-12-19 01:01:35,848 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 4190 transitions. Word has length 66 [2023-12-19 01:01:35,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:35,848 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 4190 transitions. [2023-12-19 01:01:35,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 4190 transitions. [2023-12-19 01:01:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:01:35,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:35,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:35,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:01:35,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:35,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:35,850 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2023-12-19 01:01:35,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:35,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787155762] [2023-12-19 01:01:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:35,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:35,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787155762] [2023-12-19 01:01:35,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787155762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:35,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:35,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:35,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929164992] [2023-12-19 01:01:35,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:35,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:01:35,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:35,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:01:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:01:35,900 INFO L87 Difference]: Start difference. First operand 2586 states and 4190 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:35,954 INFO L93 Difference]: Finished difference Result 5966 states and 9264 transitions. [2023-12-19 01:01:35,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:01:35,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:01:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:35,966 INFO L225 Difference]: With dead ends: 5966 [2023-12-19 01:01:35,966 INFO L226 Difference]: Without dead ends: 4180 [2023-12-19 01:01:35,969 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 [2023-12-19 01:01:35,970 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:35,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2023-12-19 01:01:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4178. [2023-12-19 01:01:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4176 states have (on average 1.5589080459770115) internal successors, (6510), 4177 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6510 transitions. [2023-12-19 01:01:36,058 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6510 transitions. Word has length 66 [2023-12-19 01:01:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:36,058 INFO L495 AbstractCegarLoop]: Abstraction has 4178 states and 6510 transitions. [2023-12-19 01:01:36,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6510 transitions. [2023-12-19 01:01:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:01:36,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:36,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:36,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:01:36,059 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:36,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2023-12-19 01:01:36,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:36,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15953770] [2023-12-19 01:01:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:36,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:36,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:36,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15953770] [2023-12-19 01:01:36,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15953770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:36,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:36,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418034339] [2023-12-19 01:01:36,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:36,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:01:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:01:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:01:36,108 INFO L87 Difference]: Start difference. First operand 4178 states and 6510 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:36,254 INFO L93 Difference]: Finished difference Result 10550 states and 15888 transitions. [2023-12-19 01:01:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:01:36,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:01:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:36,287 INFO L225 Difference]: With dead ends: 10550 [2023-12-19 01:01:36,288 INFO L226 Difference]: Without dead ends: 7172 [2023-12-19 01:01:36,293 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 [2023-12-19 01:01:36,294 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:36,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7172 states. [2023-12-19 01:01:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7172 to 7170. [2023-12-19 01:01:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 7168 states have (on average 1.501953125) internal successors, (10766), 7169 states have internal predecessors, (10766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 10766 transitions. [2023-12-19 01:01:36,468 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 10766 transitions. Word has length 66 [2023-12-19 01:01:36,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:36,469 INFO L495 AbstractCegarLoop]: Abstraction has 7170 states and 10766 transitions. [2023-12-19 01:01:36,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 10766 transitions. [2023-12-19 01:01:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:01:36,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:36,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:36,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:01:36,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:36,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash -773477451, now seen corresponding path program 1 times [2023-12-19 01:01:36,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:36,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265915401] [2023-12-19 01:01:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265915401] [2023-12-19 01:01:36,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265915401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:36,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:36,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:36,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021227293] [2023-12-19 01:01:36,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:36,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:01:36,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:36,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:01:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:01:36,560 INFO L87 Difference]: Start difference. First operand 7170 states and 10766 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:41,946 INFO L93 Difference]: Finished difference Result 9425 states and 15075 transitions. [2023-12-19 01:01:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:01:41,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:01:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:41,960 INFO L225 Difference]: With dead ends: 9425 [2023-12-19 01:01:41,961 INFO L226 Difference]: Without dead ends: 8672 [2023-12-19 01:01:41,968 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 [2023-12-19 01:01:41,968 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2420 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:41,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 810 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-19 01:01:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2023-12-19 01:01:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 8672. [2023-12-19 01:01:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8672 states, 8670 states have (on average 1.4855824682814303) internal successors, (12880), 8671 states have internal predecessors, (12880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 12880 transitions. [2023-12-19 01:01:42,264 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 12880 transitions. Word has length 66 [2023-12-19 01:01:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:42,264 INFO L495 AbstractCegarLoop]: Abstraction has 8672 states and 12880 transitions. [2023-12-19 01:01:42,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 12880 transitions. [2023-12-19 01:01:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:01:42,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:42,267 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:01:42,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:01:42,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:42,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2023-12-19 01:01:42,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:42,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368374986] [2023-12-19 01:01:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:42,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:01:42,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:42,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368374986] [2023-12-19 01:01:42,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368374986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:42,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:42,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:01:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876086365] [2023-12-19 01:01:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:42,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:01:42,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:01:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:01:42,390 INFO L87 Difference]: Start difference. First operand 8672 states and 12880 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2023-12-19 01:01:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:43,186 INFO L93 Difference]: Finished difference Result 46318 states and 67703 transitions. [2023-12-19 01:01:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:01:43,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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 86 [2023-12-19 01:01:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:43,277 INFO L225 Difference]: With dead ends: 46318 [2023-12-19 01:01:43,277 INFO L226 Difference]: Without dead ends: 41836 [2023-12-19 01:01:43,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:01:43,294 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8061 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8061 SdHoareTripleChecker+Valid, 3964 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:43,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8061 Valid, 3964 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:01:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41836 states. [2023-12-19 01:01:43,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41836 to 14112. [2023-12-19 01:01:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14112 states, 14110 states have (on average 1.4684620836286322) internal successors, (20720), 14111 states have internal predecessors, (20720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14112 states to 14112 states and 20720 transitions. [2023-12-19 01:01:43,828 INFO L78 Accepts]: Start accepts. Automaton has 14112 states and 20720 transitions. Word has length 86 [2023-12-19 01:01:43,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:43,828 INFO L495 AbstractCegarLoop]: Abstraction has 14112 states and 20720 transitions. [2023-12-19 01:01:43,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2023-12-19 01:01:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 14112 states and 20720 transitions. [2023-12-19 01:01:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:01:43,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:43,832 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:01:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:01:43,832 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:43,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:43,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2023-12-19 01:01:43,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:43,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086517761] [2023-12-19 01:01:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:01:43,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086517761] [2023-12-19 01:01:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086517761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:43,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:43,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:01:43,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145841011] [2023-12-19 01:01:43,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:43,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:01:43,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:43,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:01:43,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:01:43,973 INFO L87 Difference]: Start difference. First operand 14112 states and 20720 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:44,810 INFO L93 Difference]: Finished difference Result 52686 states and 76919 transitions. [2023-12-19 01:01:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:01:44,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2023-12-19 01:01:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:44,887 INFO L225 Difference]: With dead ends: 52686 [2023-12-19 01:01:44,887 INFO L226 Difference]: Without dead ends: 46316 [2023-12-19 01:01:44,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:01:44,909 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:44,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:01:44,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46316 states. [2023-12-19 01:01:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46316 to 22720. [2023-12-19 01:01:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22720 states, 22718 states have (on average 1.4571705255744343) internal successors, (33104), 22719 states have internal predecessors, (33104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22720 states to 22720 states and 33104 transitions. [2023-12-19 01:01:45,798 INFO L78 Accepts]: Start accepts. Automaton has 22720 states and 33104 transitions. Word has length 86 [2023-12-19 01:01:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:45,798 INFO L495 AbstractCegarLoop]: Abstraction has 22720 states and 33104 transitions. [2023-12-19 01:01:45,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 22720 states and 33104 transitions. [2023-12-19 01:01:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:01:45,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:45,803 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:01:45,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:01:45,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:45,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:45,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2023-12-19 01:01:45,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:45,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005669102] [2023-12-19 01:01:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:45,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:01:45,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005669102] [2023-12-19 01:01:45,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005669102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:45,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:45,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:01:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336254302] [2023-12-19 01:01:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:45,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:01:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:01:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:01:45,947 INFO L87 Difference]: Start difference. First operand 22720 states and 33104 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:46,970 INFO L93 Difference]: Finished difference Result 59054 states and 86103 transitions. [2023-12-19 01:01:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:01:46,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:01:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:47,203 INFO L225 Difference]: With dead ends: 59054 [2023-12-19 01:01:47,203 INFO L226 Difference]: Without dead ends: 52684 [2023-12-19 01:01:47,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:01:47,215 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:47,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:01:47,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52684 states. [2023-12-19 01:01:48,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52684 to 29088. [2023-12-19 01:01:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29088 states, 29086 states have (on average 1.4538953448394416) internal successors, (42288), 29087 states have internal predecessors, (42288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29088 states to 29088 states and 42288 transitions. [2023-12-19 01:01:48,294 INFO L78 Accepts]: Start accepts. Automaton has 29088 states and 42288 transitions. Word has length 86 [2023-12-19 01:01:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:48,294 INFO L495 AbstractCegarLoop]: Abstraction has 29088 states and 42288 transitions. [2023-12-19 01:01:48,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 29088 states and 42288 transitions. [2023-12-19 01:01:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:01:48,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:48,303 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:01:48,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:01:48,303 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:48,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:48,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2023-12-19 01:01:48,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:48,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008715287] [2023-12-19 01:01:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:48,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 01:01:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008715287] [2023-12-19 01:01:48,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008715287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:48,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:48,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:01:48,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553548024] [2023-12-19 01:01:48,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:48,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:01:48,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:48,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:01:48,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:01:48,444 INFO L87 Difference]: Start difference. First operand 29088 states and 42288 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:49,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:49,954 INFO L93 Difference]: Finished difference Result 65422 states and 95287 transitions. [2023-12-19 01:01:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:01:49,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:01:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:50,030 INFO L225 Difference]: With dead ends: 65422 [2023-12-19 01:01:50,030 INFO L226 Difference]: Without dead ends: 59052 [2023-12-19 01:01:50,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:01:50,042 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8155 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8155 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:50,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8155 Valid, 3938 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:01:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59052 states. [2023-12-19 01:01:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59052 to 35456. [2023-12-19 01:01:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35456 states, 35454 states have (on average 1.4517966943081175) internal successors, (51472), 35455 states have internal predecessors, (51472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35456 states to 35456 states and 51472 transitions. [2023-12-19 01:01:51,040 INFO L78 Accepts]: Start accepts. Automaton has 35456 states and 51472 transitions. Word has length 86 [2023-12-19 01:01:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:51,042 INFO L495 AbstractCegarLoop]: Abstraction has 35456 states and 51472 transitions. [2023-12-19 01:01:51,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 35456 states and 51472 transitions. [2023-12-19 01:01:51,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:01:51,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:51,046 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:01:51,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:01:51,046 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:51,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:51,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404091, now seen corresponding path program 1 times [2023-12-19 01:01:51,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:51,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049078768] [2023-12-19 01:01:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:51,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:01:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049078768] [2023-12-19 01:01:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049078768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:51,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:01:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623711802] [2023-12-19 01:01:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:01:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:01:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:01:51,164 INFO L87 Difference]: Start difference. First operand 35456 states and 51472 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:52,714 INFO L93 Difference]: Finished difference Result 71790 states and 104471 transitions. [2023-12-19 01:01:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:01:52,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:01:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:52,798 INFO L225 Difference]: With dead ends: 71790 [2023-12-19 01:01:52,799 INFO L226 Difference]: Without dead ends: 65420 [2023-12-19 01:01:52,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:01:52,816 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8071 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8071 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:52,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8071 Valid, 3991 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:01:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65420 states. [2023-12-19 01:01:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65420 to 41824. [2023-12-19 01:01:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41824 states, 41822 states have (on average 1.4503371431304097) internal successors, (60656), 41823 states have internal predecessors, (60656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41824 states to 41824 states and 60656 transitions. [2023-12-19 01:01:54,041 INFO L78 Accepts]: Start accepts. Automaton has 41824 states and 60656 transitions. Word has length 86 [2023-12-19 01:01:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:54,041 INFO L495 AbstractCegarLoop]: Abstraction has 41824 states and 60656 transitions. [2023-12-19 01:01:54,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:54,042 INFO L276 IsEmpty]: Start isEmpty. Operand 41824 states and 60656 transitions. [2023-12-19 01:01:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:01:54,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:54,045 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:01:54,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:01:54,045 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:54,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1634382779, now seen corresponding path program 1 times [2023-12-19 01:01:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:54,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707213023] [2023-12-19 01:01:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:01:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707213023] [2023-12-19 01:01:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707213023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:01:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861600370] [2023-12-19 01:01:54,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:54,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:01:54,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:01:54,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:01:54,278 INFO L87 Difference]: Start difference. First operand 41824 states and 60656 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:56,059 INFO L93 Difference]: Finished difference Result 78158 states and 113655 transitions. [2023-12-19 01:01:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:01:56,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 [2023-12-19 01:01:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:56,149 INFO L225 Difference]: With dead ends: 78158 [2023-12-19 01:01:56,149 INFO L226 Difference]: Without dead ends: 71788 [2023-12-19 01:01:56,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:01:56,164 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:56,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:01:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71788 states. [2023-12-19 01:01:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71788 to 48192. [2023-12-19 01:01:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48192 states, 48190 states have (on average 1.4492633326416269) internal successors, (69840), 48191 states have internal predecessors, (69840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48192 states to 48192 states and 69840 transitions. [2023-12-19 01:01:57,551 INFO L78 Accepts]: Start accepts. Automaton has 48192 states and 69840 transitions. Word has length 86 [2023-12-19 01:01:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:57,551 INFO L495 AbstractCegarLoop]: Abstraction has 48192 states and 69840 transitions. [2023-12-19 01:01:57,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 48192 states and 69840 transitions. [2023-12-19 01:01:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 01:01:57,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:57,555 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:01:57,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:01:57,555 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:57,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:57,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1298476795, now seen corresponding path program 1 times [2023-12-19 01:01:57,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:57,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559802126] [2023-12-19 01:01:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:57,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559802126] [2023-12-19 01:01:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559802126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:01:57,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:01:57,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:01:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577437087] [2023-12-19 01:01:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:01:57,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:01:57,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:57,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:01:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:01:57,611 INFO L87 Difference]: Start difference. First operand 48192 states and 69840 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:59,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:59,363 INFO L93 Difference]: Finished difference Result 94084 states and 136082 transitions. [2023-12-19 01:01:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:01:59,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-12-19 01:01:59,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:59,445 INFO L225 Difference]: With dead ends: 94084 [2023-12-19 01:01:59,446 INFO L226 Difference]: Without dead ends: 48194 [2023-12-19 01:01:59,473 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 [2023-12-19 01:01:59,476 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:59,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:01:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48194 states. [2023-12-19 01:02:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48194 to 48192. [2023-12-19 01:02:01,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48192 states, 48190 states have (on average 1.4349865117244243) internal successors, (69152), 48191 states have internal predecessors, (69152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48192 states to 48192 states and 69152 transitions. [2023-12-19 01:02:01,329 INFO L78 Accepts]: Start accepts. Automaton has 48192 states and 69152 transitions. Word has length 87 [2023-12-19 01:02:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:01,330 INFO L495 AbstractCegarLoop]: Abstraction has 48192 states and 69152 transitions. [2023-12-19 01:02:01,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 48192 states and 69152 transitions. [2023-12-19 01:02:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 01:02:01,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:01,333 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:01,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:02:01,334 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:01,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1037402045, now seen corresponding path program 1 times [2023-12-19 01:02:01,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:01,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770130716] [2023-12-19 01:02:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:01,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:01,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:01,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770130716] [2023-12-19 01:02:01,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770130716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:01,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:01,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:01,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251405431] [2023-12-19 01:02:01,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:01,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:01,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:01,435 INFO L87 Difference]: Start difference. First operand 48192 states and 69152 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:02,050 INFO L93 Difference]: Finished difference Result 65016 states and 93415 transitions. [2023-12-19 01:02:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:02,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-19 01:02:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:02,069 INFO L225 Difference]: With dead ends: 65016 [2023-12-19 01:02:02,069 INFO L226 Difference]: Without dead ends: 19126 [2023-12-19 01:02:02,093 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 [2023-12-19 01:02:02,094 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:02,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:02:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2023-12-19 01:02:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19119. [2023-12-19 01:02:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19119 states, 19117 states have (on average 1.4445258147198827) internal successors, (27615), 19118 states have internal predecessors, (27615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19119 states to 19119 states and 27615 transitions. [2023-12-19 01:02:02,622 INFO L78 Accepts]: Start accepts. Automaton has 19119 states and 27615 transitions. Word has length 88 [2023-12-19 01:02:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:02,623 INFO L495 AbstractCegarLoop]: Abstraction has 19119 states and 27615 transitions. [2023-12-19 01:02:02,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 19119 states and 27615 transitions. [2023-12-19 01:02:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 01:02:02,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:02,625 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:02:02,626 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:02,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1781311287, now seen corresponding path program 1 times [2023-12-19 01:02:02,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:02,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017309968] [2023-12-19 01:02:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:02,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:02,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:02,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017309968] [2023-12-19 01:02:02,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017309968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:02,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:02,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:02,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826979425] [2023-12-19 01:02:02,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:02,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:02,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:02,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:02,704 INFO L87 Difference]: Start difference. First operand 19119 states and 27615 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:03,105 INFO L93 Difference]: Finished difference Result 27523 states and 39617 transitions. [2023-12-19 01:02:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:03,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-19 01:02:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:03,121 INFO L225 Difference]: With dead ends: 27523 [2023-12-19 01:02:03,121 INFO L226 Difference]: Without dead ends: 10721 [2023-12-19 01:02:03,134 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 [2023-12-19 01:02:03,135 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:03,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:02:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10721 states. [2023-12-19 01:02:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10721 to 10719. [2023-12-19 01:02:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10717 states have (on average 1.4458337221237287) internal successors, (15495), 10718 states have internal predecessors, (15495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15495 transitions. [2023-12-19 01:02:03,392 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15495 transitions. Word has length 89 [2023-12-19 01:02:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:03,392 INFO L495 AbstractCegarLoop]: Abstraction has 10719 states and 15495 transitions. [2023-12-19 01:02:03,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15495 transitions. [2023-12-19 01:02:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:02:03,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:03,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:02:03,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:02:03,395 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:03,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:03,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2081860631, now seen corresponding path program 1 times [2023-12-19 01:02:03,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:03,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518257628] [2023-12-19 01:02:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:03,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:03,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518257628] [2023-12-19 01:02:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518257628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:03,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:03,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305321449] [2023-12-19 01:02:03,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:03,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:03,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:03,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:03,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:03,465 INFO L87 Difference]: Start difference. First operand 10719 states and 15495 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:03,574 INFO L93 Difference]: Finished difference Result 14923 states and 21437 transitions. [2023-12-19 01:02:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-19 01:02:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:03,581 INFO L225 Difference]: With dead ends: 14923 [2023-12-19 01:02:03,581 INFO L226 Difference]: Without dead ends: 6521 [2023-12-19 01:02:03,585 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 [2023-12-19 01:02:03,586 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:03,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:02:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2023-12-19 01:02:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 6519. [2023-12-19 01:02:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6519 states, 6517 states have (on average 1.4569587233389596) internal successors, (9495), 6518 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6519 states to 6519 states and 9495 transitions. [2023-12-19 01:02:03,716 INFO L78 Accepts]: Start accepts. Automaton has 6519 states and 9495 transitions. Word has length 91 [2023-12-19 01:02:03,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:03,716 INFO L495 AbstractCegarLoop]: Abstraction has 6519 states and 9495 transitions. [2023-12-19 01:02:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6519 states and 9495 transitions. [2023-12-19 01:02:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 01:02:03,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:03,718 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:03,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:02:03,720 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:03,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash 207620325, now seen corresponding path program 1 times [2023-12-19 01:02:03,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:03,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858134344] [2023-12-19 01:02:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:03,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:03,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:03,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858134344] [2023-12-19 01:02:03,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858134344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:03,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:03,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:03,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269085387] [2023-12-19 01:02:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:03,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:03,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:03,806 INFO L87 Difference]: Start difference. First operand 6519 states and 9495 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:03,910 INFO L93 Difference]: Finished difference Result 8623 states and 12437 transitions. [2023-12-19 01:02:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-19 01:02:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:03,914 INFO L225 Difference]: With dead ends: 8623 [2023-12-19 01:02:03,914 INFO L226 Difference]: Without dead ends: 4421 [2023-12-19 01:02:03,916 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 [2023-12-19 01:02:03,917 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:03,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:02:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2023-12-19 01:02:03,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4419. [2023-12-19 01:02:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 4417 states have (on average 1.477247000226398) internal successors, (6525), 4418 states have internal predecessors, (6525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 6525 transitions. [2023-12-19 01:02:03,985 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 6525 transitions. Word has length 93 [2023-12-19 01:02:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:03,985 INFO L495 AbstractCegarLoop]: Abstraction has 4419 states and 6525 transitions. [2023-12-19 01:02:03,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 6525 transitions. [2023-12-19 01:02:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 01:02:03,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:03,987 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:03,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:02:03,987 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:03,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:03,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411661, now seen corresponding path program 1 times [2023-12-19 01:02:03,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:03,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846398416] [2023-12-19 01:02:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:04,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:04,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846398416] [2023-12-19 01:02:04,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846398416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:04,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:04,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994331713] [2023-12-19 01:02:04,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:04,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:04,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:04,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:04,105 INFO L87 Difference]: Start difference. First operand 4419 states and 6525 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:04,193 INFO L93 Difference]: Finished difference Result 5473 states and 7982 transitions. [2023-12-19 01:02:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:04,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-19 01:02:04,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:04,212 INFO L225 Difference]: With dead ends: 5473 [2023-12-19 01:02:04,212 INFO L226 Difference]: Without dead ends: 3371 [2023-12-19 01:02:04,214 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 [2023-12-19 01:02:04,214 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:04,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:02:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2023-12-19 01:02:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3369. [2023-12-19 01:02:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 3367 states have (on average 1.5013365013365014) internal successors, (5055), 3368 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:04,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 5055 transitions. [2023-12-19 01:02:04,270 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 5055 transitions. Word has length 95 [2023-12-19 01:02:04,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:04,271 INFO L495 AbstractCegarLoop]: Abstraction has 3369 states and 5055 transitions. [2023-12-19 01:02:04,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 5055 transitions. [2023-12-19 01:02:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 01:02:04,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:04,271 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:04,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:02:04,272 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:04,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1010802943, now seen corresponding path program 1 times [2023-12-19 01:02:04,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:04,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712690614] [2023-12-19 01:02:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:04,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:02:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712690614] [2023-12-19 01:02:04,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712690614] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:02:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788001067] [2023-12-19 01:02:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:04,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:04,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:02:04,374 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) [2023-12-19 01:02:04,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:02:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:04,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 01:02:04,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:02:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:02:04,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:02:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:02:05,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788001067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:02:05,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:02:05,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-19 01:02:05,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9748240] [2023-12-19 01:02:05,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:02:05,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:02:05,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:05,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:02:05,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:02:05,013 INFO L87 Difference]: Start difference. First operand 3369 states and 5055 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:05,148 INFO L93 Difference]: Finished difference Result 5905 states and 8454 transitions. [2023-12-19 01:02:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:02:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 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 97 [2023-12-19 01:02:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:05,153 INFO L225 Difference]: With dead ends: 5905 [2023-12-19 01:02:05,153 INFO L226 Difference]: Without dead ends: 4853 [2023-12-19 01:02:05,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:02:05,155 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 5944 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5944 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:05,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5944 Valid, 3439 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:02:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2023-12-19 01:02:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4776. [2023-12-19 01:02:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4774 states have (on average 1.434017595307918) internal successors, (6846), 4775 states have internal predecessors, (6846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:05,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 6846 transitions. [2023-12-19 01:02:05,251 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 6846 transitions. Word has length 97 [2023-12-19 01:02:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:05,251 INFO L495 AbstractCegarLoop]: Abstraction has 4776 states and 6846 transitions. [2023-12-19 01:02:05,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 6846 transitions. [2023-12-19 01:02:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 01:02:05,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:05,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:02:05,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 01:02:05,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 01:02:05,457 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:05,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 806498379, now seen corresponding path program 1 times [2023-12-19 01:02:05,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:05,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725178907] [2023-12-19 01:02:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725178907] [2023-12-19 01:02:06,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725178907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:02:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920923830] [2023-12-19 01:02:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:06,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:06,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:02:06,068 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) [2023-12-19 01:02:06,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:02:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:06,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:02:06,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:02:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:06,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:02:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:07,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920923830] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:02:07,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:02:07,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-19 01:02:07,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072909870] [2023-12-19 01:02:07,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:02:07,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:02:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:02:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:02:07,426 INFO L87 Difference]: Start difference. First operand 4776 states and 6846 transitions. Second operand has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 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) [2023-12-19 01:02:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:10,026 INFO L93 Difference]: Finished difference Result 16620 states and 22407 transitions. [2023-12-19 01:02:10,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 01:02:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 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 98 [2023-12-19 01:02:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:10,041 INFO L225 Difference]: With dead ends: 16620 [2023-12-19 01:02:10,041 INFO L226 Difference]: Without dead ends: 14205 [2023-12-19 01:02:10,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1004, Invalid=3966, Unknown=0, NotChecked=0, Total=4970 [2023-12-19 01:02:10,047 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 22632 mSDsluCounter, 8247 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22632 SdHoareTripleChecker+Valid, 9770 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:10,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22632 Valid, 9770 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:02:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14205 states. [2023-12-19 01:02:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14205 to 13413. [2023-12-19 01:02:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13413 states, 13411 states have (on average 1.3471776899560062) internal successors, (18067), 13412 states have internal predecessors, (18067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 18067 transitions. [2023-12-19 01:02:10,467 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 18067 transitions. Word has length 98 [2023-12-19 01:02:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:10,467 INFO L495 AbstractCegarLoop]: Abstraction has 13413 states and 18067 transitions. [2023-12-19 01:02:10,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 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) [2023-12-19 01:02:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 18067 transitions. [2023-12-19 01:02:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 01:02:10,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:10,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:02:10,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:02:10,677 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,SelfDestructingSolverStorable26 [2023-12-19 01:02:10,677 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:10,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1190406581, now seen corresponding path program 1 times [2023-12-19 01:02:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:10,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393586687] [2023-12-19 01:02:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:11,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:11,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393586687] [2023-12-19 01:02:11,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393586687] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:02:11,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120058405] [2023-12-19 01:02:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:11,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:11,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:02:11,314 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) [2023-12-19 01:02:11,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:02:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:11,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:02:11,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:02:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:12,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:02:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:12,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120058405] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:02:12,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:02:12,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-19 01:02:12,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064100237] [2023-12-19 01:02:12,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:02:12,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 01:02:12,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:12,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 01:02:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 01:02:12,975 INFO L87 Difference]: Start difference. First operand 13413 states and 18067 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:17,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:17,757 INFO L93 Difference]: Finished difference Result 65525 states and 85786 transitions. [2023-12-19 01:02:17,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-19 01:02:17,757 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 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 98 [2023-12-19 01:02:17,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:17,823 INFO L225 Difference]: With dead ends: 65525 [2023-12-19 01:02:17,823 INFO L226 Difference]: Without dead ends: 54767 [2023-12-19 01:02:17,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1531, Invalid=7025, Unknown=0, NotChecked=0, Total=8556 [2023-12-19 01:02:17,847 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 20859 mSDsluCounter, 9896 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20859 SdHoareTripleChecker+Valid, 11421 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:17,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20859 Valid, 11421 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:02:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54767 states. [2023-12-19 01:02:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54767 to 50423. [2023-12-19 01:02:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50423 states, 50421 states have (on average 1.297138097221396) internal successors, (65403), 50422 states have internal predecessors, (65403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50423 states to 50423 states and 65403 transitions. [2023-12-19 01:02:19,334 INFO L78 Accepts]: Start accepts. Automaton has 50423 states and 65403 transitions. Word has length 98 [2023-12-19 01:02:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:19,335 INFO L495 AbstractCegarLoop]: Abstraction has 50423 states and 65403 transitions. [2023-12-19 01:02:19,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:19,335 INFO L276 IsEmpty]: Start isEmpty. Operand 50423 states and 65403 transitions. [2023-12-19 01:02:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 01:02:19,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:19,352 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:19,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:02:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:19,559 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:19,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash 545897423, now seen corresponding path program 1 times [2023-12-19 01:02:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:19,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348566665] [2023-12-19 01:02:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:19,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:19,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348566665] [2023-12-19 01:02:19,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348566665] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:02:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262602435] [2023-12-19 01:02:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:19,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:02:19,880 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) [2023-12-19 01:02:19,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:02:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:19,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:02:19,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:02:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:20,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:02:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:21,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262602435] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:02:21,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:02:21,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 01:02:21,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467254302] [2023-12-19 01:02:21,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:02:21,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 01:02:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:21,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 01:02:21,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-19 01:02:21,308 INFO L87 Difference]: Start difference. First operand 50423 states and 65403 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:24,155 INFO L93 Difference]: Finished difference Result 100270 states and 129149 transitions. [2023-12-19 01:02:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 01:02:24,156 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 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 99 [2023-12-19 01:02:24,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:24,228 INFO L225 Difference]: With dead ends: 100270 [2023-12-19 01:02:24,228 INFO L226 Difference]: Without dead ends: 54323 [2023-12-19 01:02:24,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=690, Invalid=2616, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 01:02:24,252 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 17503 mSDsluCounter, 8128 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17503 SdHoareTripleChecker+Valid, 9658 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:24,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17503 Valid, 9658 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:02:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54323 states. [2023-12-19 01:02:25,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54323 to 40853. [2023-12-19 01:02:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40853 states, 40851 states have (on average 1.2725514675283347) internal successors, (51985), 40852 states have internal predecessors, (51985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40853 states to 40853 states and 51985 transitions. [2023-12-19 01:02:25,799 INFO L78 Accepts]: Start accepts. Automaton has 40853 states and 51985 transitions. Word has length 99 [2023-12-19 01:02:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:25,799 INFO L495 AbstractCegarLoop]: Abstraction has 40853 states and 51985 transitions. [2023-12-19 01:02:25,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 40853 states and 51985 transitions. [2023-12-19 01:02:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:02:25,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:25,802 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:25,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 01:02:26,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 01:02:26,011 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:26,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:26,012 INFO L85 PathProgramCache]: Analyzing trace with hash -773157797, now seen corresponding path program 1 times [2023-12-19 01:02:26,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:26,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387762263] [2023-12-19 01:02:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:26,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:26,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387762263] [2023-12-19 01:02:26,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387762263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:02:26,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692117517] [2023-12-19 01:02:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:26,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:26,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:02:26,316 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) [2023-12-19 01:02:26,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:02:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:26,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 01:02:26,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:02:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:27,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:02:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:28,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692117517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:02:28,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:02:28,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 35 [2023-12-19 01:02:28,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717898006] [2023-12-19 01:02:28,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:02:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 01:02:28,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:28,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 01:02:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 01:02:28,883 INFO L87 Difference]: Start difference. First operand 40853 states and 51985 transitions. Second operand has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:33,081 INFO L93 Difference]: Finished difference Result 92210 states and 115461 transitions. [2023-12-19 01:02:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-19 01:02:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 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 100 [2023-12-19 01:02:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:33,153 INFO L225 Difference]: With dead ends: 92210 [2023-12-19 01:02:33,153 INFO L226 Difference]: Without dead ends: 56820 [2023-12-19 01:02:33,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1152, Invalid=4398, Unknown=0, NotChecked=0, Total=5550 [2023-12-19 01:02:33,177 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 19415 mSDsluCounter, 16943 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19415 SdHoareTripleChecker+Valid, 18466 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:33,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19415 Valid, 18466 Invalid, 1159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:02:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56820 states. [2023-12-19 01:02:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56820 to 49092. [2023-12-19 01:02:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49092 states, 49090 states have (on average 1.2589325728254226) internal successors, (61801), 49091 states have internal predecessors, (61801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49092 states to 49092 states and 61801 transitions. [2023-12-19 01:02:35,228 INFO L78 Accepts]: Start accepts. Automaton has 49092 states and 61801 transitions. Word has length 100 [2023-12-19 01:02:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:35,228 INFO L495 AbstractCegarLoop]: Abstraction has 49092 states and 61801 transitions. [2023-12-19 01:02:35,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 49092 states and 61801 transitions. [2023-12-19 01:02:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 01:02:35,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:35,230 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:35,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 01:02:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:35,441 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:35,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1322403255, now seen corresponding path program 1 times [2023-12-19 01:02:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:35,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219378106] [2023-12-19 01:02:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219378106] [2023-12-19 01:02:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219378106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:02:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633503792] [2023-12-19 01:02:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:35,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:02:35,768 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) [2023-12-19 01:02:35,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:02:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:35,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:02:35,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:02:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:36,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:02:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633503792] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:02:37,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:02:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 01:02:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273632663] [2023-12-19 01:02:37,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:02:37,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:02:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:02:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:02:37,736 INFO L87 Difference]: Start difference. First operand 49092 states and 61801 transitions. Second operand has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 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) [2023-12-19 01:02:41,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:41,492 INFO L93 Difference]: Finished difference Result 141832 states and 177153 transitions. [2023-12-19 01:02:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 01:02:41,492 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 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 101 [2023-12-19 01:02:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:41,724 INFO L225 Difference]: With dead ends: 141832 [2023-12-19 01:02:41,724 INFO L226 Difference]: Without dead ends: 100463 [2023-12-19 01:02:41,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 01:02:41,754 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 10937 mSDsluCounter, 6396 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10937 SdHoareTripleChecker+Valid, 7932 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:41,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10937 Valid, 7932 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:02:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100463 states. [2023-12-19 01:02:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100463 to 95799. [2023-12-19 01:02:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95799 states, 95797 states have (on average 1.241510694489389) internal successors, (118933), 95798 states have internal predecessors, (118933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:02:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95799 states to 95799 states and 118933 transitions. [2023-12-19 01:02:45,208 INFO L78 Accepts]: Start accepts. Automaton has 95799 states and 118933 transitions. Word has length 101 [2023-12-19 01:02:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:45,209 INFO L495 AbstractCegarLoop]: Abstraction has 95799 states and 118933 transitions. [2023-12-19 01:02:45,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 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) [2023-12-19 01:02:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 95799 states and 118933 transitions. [2023-12-19 01:02:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:02:45,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:45,212 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:02:45,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 01:02:45,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:45,419 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:45,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:45,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1425391795, now seen corresponding path program 1 times [2023-12-19 01:02:45,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:45,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426372816] [2023-12-19 01:02:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:45,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426372816] [2023-12-19 01:02:46,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426372816] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:02:46,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236299580] [2023-12-19 01:02:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:46,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:02:46,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:02:46,477 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) [2023-12-19 01:02:46,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 01:02:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:46,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 01:02:46,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:02:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:47,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:02:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:02:48,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236299580] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:02:48,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:02:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-19 01:02:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845462546] [2023-12-19 01:02:48,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:02:48,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 01:02:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 01:02:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 01:02:48,590 INFO L87 Difference]: Start difference. First operand 95799 states and 118933 transitions. Second operand has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:03:02,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:02,142 INFO L93 Difference]: Finished difference Result 264657 states and 326124 transitions. [2023-12-19 01:03:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-19 01:03:02,142 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 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 102 [2023-12-19 01:03:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:02,738 INFO L225 Difference]: With dead ends: 264657 [2023-12-19 01:03:02,738 INFO L226 Difference]: Without dead ends: 225851 [2023-12-19 01:03:02,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2836, Invalid=12664, Unknown=0, NotChecked=0, Total=15500 [2023-12-19 01:03:02,808 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 17346 mSDsluCounter, 19345 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17346 SdHoareTripleChecker+Valid, 20914 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:02,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17346 Valid, 20914 Invalid, 2416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:03:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225851 states. [2023-12-19 01:03:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225851 to 81247. [2023-12-19 01:03:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81247 states, 81245 states have (on average 1.2399163025416948) internal successors, (100737), 81246 states have internal predecessors, (100737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:03:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81247 states to 81247 states and 100737 transitions. [2023-12-19 01:03:07,394 INFO L78 Accepts]: Start accepts. Automaton has 81247 states and 100737 transitions. Word has length 102 [2023-12-19 01:03:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:07,394 INFO L495 AbstractCegarLoop]: Abstraction has 81247 states and 100737 transitions. [2023-12-19 01:03:07,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:03:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 81247 states and 100737 transitions. [2023-12-19 01:03:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:03:07,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:07,397 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:03:07,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 01:03:07,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:07,608 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:07,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash 578499507, now seen corresponding path program 1 times [2023-12-19 01:03:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394152183] [2023-12-19 01:03:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:03:08,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:08,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394152183] [2023-12-19 01:03:08,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394152183] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:08,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248310292] [2023-12-19 01:03:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:08,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:08,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:08,576 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) [2023-12-19 01:03:08,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 01:03:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:08,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 01:03:08,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:03:09,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:03:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248310292] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:10,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:10,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2023-12-19 01:03:10,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296787370] [2023-12-19 01:03:10,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:10,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 01:03:10,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 01:03:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 01:03:10,450 INFO L87 Difference]: Start difference. First operand 81247 states and 100737 transitions. Second operand has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:03:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:21,817 INFO L93 Difference]: Finished difference Result 180294 states and 222293 transitions. [2023-12-19 01:03:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-19 01:03:21,817 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 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 102 [2023-12-19 01:03:21,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:21,994 INFO L225 Difference]: With dead ends: 180294 [2023-12-19 01:03:21,994 INFO L226 Difference]: Without dead ends: 139466 [2023-12-19 01:03:22,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3677 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2474, Invalid=10182, Unknown=0, NotChecked=0, Total=12656 [2023-12-19 01:03:22,043 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 14441 mSDsluCounter, 22815 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14441 SdHoareTripleChecker+Valid, 24426 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:22,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14441 Valid, 24426 Invalid, 2891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:03:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139466 states. [2023-12-19 01:03:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139466 to 62519. [2023-12-19 01:03:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62519 states, 62517 states have (on average 1.2422541068829278) internal successors, (77662), 62518 states have internal predecessors, (77662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:03:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62519 states to 62519 states and 77662 transitions. [2023-12-19 01:03:25,638 INFO L78 Accepts]: Start accepts. Automaton has 62519 states and 77662 transitions. Word has length 102 [2023-12-19 01:03:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:25,639 INFO L495 AbstractCegarLoop]: Abstraction has 62519 states and 77662 transitions. [2023-12-19 01:03:25,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:03:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 62519 states and 77662 transitions. [2023-12-19 01:03:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 01:03:25,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:25,640 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:03:25,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 01:03:25,845 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,SelfDestructingSolverStorable32 [2023-12-19 01:03:25,846 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:25,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash -652250555, now seen corresponding path program 1 times [2023-12-19 01:03:25,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:25,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840629287] [2023-12-19 01:03:25,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:25,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:03:28,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:28,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840629287] [2023-12-19 01:03:28,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840629287] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:28,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509908665] [2023-12-19 01:03:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:28,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:28,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:28,484 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:03:28,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 01:03:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:28,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 01:03:28,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:03:30,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:03:32,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509908665] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:32,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:32,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17, 18] total 66 [2023-12-19 01:03:32,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687165070] [2023-12-19 01:03:32,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:32,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-19 01:03:32,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:32,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-19 01:03:32,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3985, Unknown=0, NotChecked=0, Total=4290 [2023-12-19 01:03:32,870 INFO L87 Difference]: Start difference. First operand 62519 states and 77662 transitions. Second operand has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:04:36,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:04:36,281 INFO L93 Difference]: Finished difference Result 182347 states and 223689 transitions. [2023-12-19 01:04:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2023-12-19 01:04:36,284 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 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 103 [2023-12-19 01:04:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:04:36,484 INFO L225 Difference]: With dead ends: 182347 [2023-12-19 01:04:36,485 INFO L226 Difference]: Without dead ends: 155733 [2023-12-19 01:04:36,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65418 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=28073, Invalid=145399, Unknown=0, NotChecked=0, Total=173472 [2023-12-19 01:04:36,522 INFO L413 NwaCegarLoop]: 1749 mSDtfsCounter, 40670 mSDsluCounter, 45983 mSDsCounter, 0 mSdLazyCounter, 18991 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40670 SdHoareTripleChecker+Valid, 47732 SdHoareTripleChecker+Invalid, 19212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 18991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:04:36,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40670 Valid, 47732 Invalid, 19212 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [221 Valid, 18991 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-19 01:04:36,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155733 states. [2023-12-19 01:04:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155733 to 93707. [2023-12-19 01:04:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93707 states, 93705 states have (on average 1.237489995197695) internal successors, (115959), 93706 states have internal predecessors, (115959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:04:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93707 states to 93707 states and 115959 transitions. [2023-12-19 01:04:42,861 INFO L78 Accepts]: Start accepts. Automaton has 93707 states and 115959 transitions. Word has length 103 [2023-12-19 01:04:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:04:42,861 INFO L495 AbstractCegarLoop]: Abstraction has 93707 states and 115959 transitions. [2023-12-19 01:04:42,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:04:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 93707 states and 115959 transitions. [2023-12-19 01:04:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 01:04:42,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:04:42,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 01:04:42,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 01:04:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:04:43,072 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:04:43,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:04:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1398061026, now seen corresponding path program 1 times [2023-12-19 01:04:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:04:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264732707] [2023-12-19 01:04:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:04:43,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:04:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:04:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:04:43,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:04:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264732707] [2023-12-19 01:04:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264732707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:04:43,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:04:43,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:04:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237320625] [2023-12-19 01:04:43,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:04:43,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:04:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:04:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:04:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:04:43,168 INFO L87 Difference]: Start difference. First operand 93707 states and 115959 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:04:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:04:51,201 INFO L93 Difference]: Finished difference Result 97501 states and 122322 transitions. [2023-12-19 01:04:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:04:51,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2023-12-19 01:04:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:04:51,297 INFO L225 Difference]: With dead ends: 97501 [2023-12-19 01:04:51,297 INFO L226 Difference]: Without dead ends: 95209 [2023-12-19 01:04:51,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:04:51,310 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 823 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 3829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:04:51,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 923 Invalid, 3829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3100 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 01:04:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95209 states. [2023-12-19 01:04:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95209 to 94458. [2023-12-19 01:04:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94458 states, 94456 states have (on average 1.2356229355467097) internal successors, (116712), 94457 states have internal predecessors, (116712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:04:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94458 states to 94458 states and 116712 transitions. [2023-12-19 01:04:56,745 INFO L78 Accepts]: Start accepts. Automaton has 94458 states and 116712 transitions. Word has length 137 [2023-12-19 01:04:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:04:56,745 INFO L495 AbstractCegarLoop]: Abstraction has 94458 states and 116712 transitions. [2023-12-19 01:04:56,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:04:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 94458 states and 116712 transitions. [2023-12-19 01:04:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-19 01:04:56,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:04:56,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:04:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 01:04:56,765 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:04:56,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:04:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -206892047, now seen corresponding path program 1 times [2023-12-19 01:04:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:04:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652252938] [2023-12-19 01:04:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:04:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:04:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:04:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:04:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:04:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652252938] [2023-12-19 01:04:57,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652252938] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:04:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936645365] [2023-12-19 01:04:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:04:57,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:04:57,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:04:57,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:04:57,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 01:04:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:04:57,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 01:04:57,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:04:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 76 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:04:58,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:04:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:04:59,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936645365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:04:59,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:04:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-19 01:04:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192819618] [2023-12-19 01:04:59,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:04:59,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 01:04:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:04:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 01:04:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 01:04:59,424 INFO L87 Difference]: Start difference. First operand 94458 states and 116712 transitions. Second operand has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:05:13,338 INFO L93 Difference]: Finished difference Result 233998 states and 289273 transitions. [2023-12-19 01:05:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-19 01:05:13,338 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 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 157 [2023-12-19 01:05:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:05:13,583 INFO L225 Difference]: With dead ends: 233998 [2023-12-19 01:05:13,584 INFO L226 Difference]: Without dead ends: 165246 [2023-12-19 01:05:13,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3083, Invalid=14209, Unknown=0, NotChecked=0, Total=17292 [2023-12-19 01:05:13,624 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 18329 mSDsluCounter, 15752 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18329 SdHoareTripleChecker+Valid, 17288 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:05:13,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18329 Valid, 17288 Invalid, 2199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:05:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165246 states. [2023-12-19 01:05:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165246 to 91930. [2023-12-19 01:05:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91930 states, 91928 states have (on average 1.2267100339396049) internal successors, (112769), 91929 states have internal predecessors, (112769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91930 states to 91930 states and 112769 transitions. [2023-12-19 01:05:19,283 INFO L78 Accepts]: Start accepts. Automaton has 91930 states and 112769 transitions. Word has length 157 [2023-12-19 01:05:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:05:19,283 INFO L495 AbstractCegarLoop]: Abstraction has 91930 states and 112769 transitions. [2023-12-19 01:05:19,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 91930 states and 112769 transitions. [2023-12-19 01:05:19,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-19 01:05:19,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:05:19,297 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:05:19,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 01:05:19,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 01:05:19,502 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:05:19,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:05:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -131074223, now seen corresponding path program 1 times [2023-12-19 01:05:19,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:05:19,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608771543] [2023-12-19 01:05:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:05:19,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:05:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:05:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:05:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608771543] [2023-12-19 01:05:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608771543] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:05:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382135229] [2023-12-19 01:05:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:05:20,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:05:20,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:05:20,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:05:20,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 01:05:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:05:20,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 01:05:20,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:05:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 42 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:21,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:05:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:22,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382135229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:05:22,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:05:22,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-19 01:05:22,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828485145] [2023-12-19 01:05:22,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:05:22,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 01:05:22,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:05:22,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 01:05:22,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-12-19 01:05:22,820 INFO L87 Difference]: Start difference. First operand 91930 states and 112769 transitions. Second operand has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:05:29,321 INFO L93 Difference]: Finished difference Result 148968 states and 183144 transitions. [2023-12-19 01:05:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 01:05:29,322 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 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 158 [2023-12-19 01:05:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:05:29,476 INFO L225 Difference]: With dead ends: 148968 [2023-12-19 01:05:29,476 INFO L226 Difference]: Without dead ends: 104282 [2023-12-19 01:05:29,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 01:05:29,512 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 10375 mSDsluCounter, 10776 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10375 SdHoareTripleChecker+Valid, 12283 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:05:29,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10375 Valid, 12283 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:05:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104282 states. [2023-12-19 01:05:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104282 to 91930. [2023-12-19 01:05:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91930 states, 91928 states have (on average 1.22129275084849) internal successors, (112271), 91929 states have internal predecessors, (112271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91930 states to 91930 states and 112271 transitions. [2023-12-19 01:05:35,797 INFO L78 Accepts]: Start accepts. Automaton has 91930 states and 112271 transitions. Word has length 158 [2023-12-19 01:05:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:05:35,798 INFO L495 AbstractCegarLoop]: Abstraction has 91930 states and 112271 transitions. [2023-12-19 01:05:35,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 91930 states and 112271 transitions. [2023-12-19 01:05:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-19 01:05:35,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:05:35,811 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:05:35,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 01:05:36,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 01:05:36,014 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:05:36,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:05:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2022996503, now seen corresponding path program 1 times [2023-12-19 01:05:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:05:36,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248442381] [2023-12-19 01:05:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:05:36,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:05:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:05:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 47 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:36,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:05:36,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248442381] [2023-12-19 01:05:36,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248442381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:05:36,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593407306] [2023-12-19 01:05:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:05:36,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:05:36,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:05:36,569 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:05:36,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 01:05:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:05:36,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 01:05:36,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:05:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:37,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:05:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 21 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593407306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:05:39,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:05:39,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-19 01:05:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590615007] [2023-12-19 01:05:39,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:05:39,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 01:05:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:05:39,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 01:05:39,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-12-19 01:05:39,343 INFO L87 Difference]: Start difference. First operand 91930 states and 112271 transitions. Second operand has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:48,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:05:48,781 INFO L93 Difference]: Finished difference Result 171432 states and 209481 transitions. [2023-12-19 01:05:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-19 01:05:48,782 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 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 158 [2023-12-19 01:05:48,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:05:48,912 INFO L225 Difference]: With dead ends: 171432 [2023-12-19 01:05:48,912 INFO L226 Difference]: Without dead ends: 104722 [2023-12-19 01:05:48,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2153 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1750, Invalid=7756, Unknown=0, NotChecked=0, Total=9506 [2023-12-19 01:05:48,952 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 20152 mSDsluCounter, 15662 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20152 SdHoareTripleChecker+Valid, 17185 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:05:48,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20152 Valid, 17185 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:05:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104722 states. [2023-12-19 01:05:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104722 to 91930. [2023-12-19 01:05:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91930 states, 91928 states have (on average 1.2099686711339308) internal successors, (111230), 91929 states have internal predecessors, (111230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91930 states to 91930 states and 111230 transitions. [2023-12-19 01:05:55,455 INFO L78 Accepts]: Start accepts. Automaton has 91930 states and 111230 transitions. Word has length 158 [2023-12-19 01:05:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:05:55,455 INFO L495 AbstractCegarLoop]: Abstraction has 91930 states and 111230 transitions. [2023-12-19 01:05:55,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:05:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 91930 states and 111230 transitions. [2023-12-19 01:05:55,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-19 01:05:55,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:05:55,468 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:05:55,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 01:05:55,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 01:05:55,673 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:05:55,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:05:55,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1219131585, now seen corresponding path program 1 times [2023-12-19 01:05:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:05:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541352736] [2023-12-19 01:05:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:05:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:05:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:05:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:56,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:05:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541352736] [2023-12-19 01:05:56,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541352736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:05:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128339643] [2023-12-19 01:05:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:05:56,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:05:56,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:05:56,448 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:05:56,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 01:05:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:05:56,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 01:05:56,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:05:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:57,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:05:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:05:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128339643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:05:59,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:05:59,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-12-19 01:05:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058544548] [2023-12-19 01:05:59,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:05:59,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:05:59,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:05:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:05:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:05:59,428 INFO L87 Difference]: Start difference. First operand 91930 states and 111230 transitions. Second operand has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:06,279 INFO L93 Difference]: Finished difference Result 143114 states and 173203 transitions. [2023-12-19 01:06:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 01:06:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 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 160 [2023-12-19 01:06:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:06,387 INFO L225 Difference]: With dead ends: 143114 [2023-12-19 01:06:06,387 INFO L226 Difference]: Without dead ends: 92694 [2023-12-19 01:06:06,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=474, Invalid=1506, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 01:06:06,422 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 18853 mSDsluCounter, 9084 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18853 SdHoareTripleChecker+Valid, 10590 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:06,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18853 Valid, 10590 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:06:06,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92694 states. [2023-12-19 01:06:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92694 to 91930. [2023-12-19 01:06:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91930 states, 91928 states have (on average 1.202919676268384) internal successors, (110582), 91929 states have internal predecessors, (110582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91930 states to 91930 states and 110582 transitions. [2023-12-19 01:06:12,650 INFO L78 Accepts]: Start accepts. Automaton has 91930 states and 110582 transitions. Word has length 160 [2023-12-19 01:06:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:12,650 INFO L495 AbstractCegarLoop]: Abstraction has 91930 states and 110582 transitions. [2023-12-19 01:06:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 91930 states and 110582 transitions. [2023-12-19 01:06:12,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:06:12,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:12,663 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:12,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 01:06:12,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 01:06:12,869 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:12,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash -491598411, now seen corresponding path program 1 times [2023-12-19 01:06:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:12,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658427652] [2023-12-19 01:06:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:12,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:13,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658427652] [2023-12-19 01:06:13,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658427652] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:06:13,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324905882] [2023-12-19 01:06:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:13,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:06:13,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:06:13,852 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:06:13,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 01:06:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:14,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 01:06:14,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:06:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:16,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:06:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324905882] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:06:20,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:06:20,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 22] total 62 [2023-12-19 01:06:20,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517548653] [2023-12-19 01:06:20,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:06:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-19 01:06:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:20,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-19 01:06:20,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3431, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 01:06:20,015 INFO L87 Difference]: Start difference. First operand 91930 states and 110582 transitions. Second operand has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:33,959 INFO L93 Difference]: Finished difference Result 419841 states and 502193 transitions. [2023-12-19 01:07:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2023-12-19 01:07:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 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 161 [2023-12-19 01:07:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:34,696 INFO L225 Difference]: With dead ends: 419841 [2023-12-19 01:07:34,696 INFO L226 Difference]: Without dead ends: 369721 [2023-12-19 01:07:34,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47846 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=17043, Invalid=103019, Unknown=0, NotChecked=0, Total=120062 [2023-12-19 01:07:34,772 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 23554 mSDsluCounter, 38931 mSDsCounter, 0 mSdLazyCounter, 6461 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23554 SdHoareTripleChecker+Valid, 40526 SdHoareTripleChecker+Invalid, 6723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 6461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:34,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23554 Valid, 40526 Invalid, 6723 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [262 Valid, 6461 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-19 01:07:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369721 states. [2023-12-19 01:07:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369721 to 275274. [2023-12-19 01:07:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275274 states, 275272 states have (on average 1.1982039582667325) internal successors, (329832), 275273 states have internal predecessors, (329832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:08:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275274 states to 275274 states and 329832 transitions. [2023-12-19 01:08:00,215 INFO L78 Accepts]: Start accepts. Automaton has 275274 states and 329832 transitions. Word has length 161 [2023-12-19 01:08:00,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:08:00,216 INFO L495 AbstractCegarLoop]: Abstraction has 275274 states and 329832 transitions. [2023-12-19 01:08:00,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:08:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 275274 states and 329832 transitions. [2023-12-19 01:08:00,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:08:00,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:08:00,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:08:00,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 01:08:00,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:08:00,456 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:08:00,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:08:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash -92855023, now seen corresponding path program 1 times [2023-12-19 01:08:00,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:08:00,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141259970] [2023-12-19 01:08:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:08:00,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:08:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:08:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:08:02,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:08:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141259970] [2023-12-19 01:08:02,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141259970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:08:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491769761] [2023-12-19 01:08:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:08:02,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:08:02,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:08:02,688 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:08:02,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 01:08:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:08:02,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 01:08:02,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:08:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:08:04,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:08:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:08:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491769761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:08:07,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:08:07,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 53 [2023-12-19 01:08:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737460869] [2023-12-19 01:08:07,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:08:07,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 01:08:07,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:08:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 01:08:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 01:08:07,097 INFO L87 Difference]: Start difference. First operand 275274 states and 329832 transitions. Second operand has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:08:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:08:47,667 INFO L93 Difference]: Finished difference Result 555451 states and 664583 transitions. [2023-12-19 01:08:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-19 01:08:47,668 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 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 161 [2023-12-19 01:08:47,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:08:48,509 INFO L225 Difference]: With dead ends: 555451 [2023-12-19 01:08:48,510 INFO L226 Difference]: Without dead ends: 477274 [2023-12-19 01:08:48,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3435 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2410, Invalid=11870, Unknown=0, NotChecked=0, Total=14280 [2023-12-19 01:08:48,617 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 26141 mSDsluCounter, 23570 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26141 SdHoareTripleChecker+Valid, 25127 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:08:48,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26141 Valid, 25127 Invalid, 2392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 01:08:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477274 states. [2023-12-19 01:09:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477274 to 343690. [2023-12-19 01:09:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343690 states, 343688 states have (on average 1.1942372151486231) internal successors, (410445), 343689 states have internal predecessors, (410445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:09:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343690 states to 343690 states and 410445 transitions. [2023-12-19 01:09:22,998 INFO L78 Accepts]: Start accepts. Automaton has 343690 states and 410445 transitions. Word has length 161 [2023-12-19 01:09:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:09:22,998 INFO L495 AbstractCegarLoop]: Abstraction has 343690 states and 410445 transitions. [2023-12-19 01:09:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:09:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 343690 states and 410445 transitions. [2023-12-19 01:09:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:09:23,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:09:23,018 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:09:23,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 01:09:23,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:09:23,218 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:09:23,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:09:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1481785931, now seen corresponding path program 1 times [2023-12-19 01:09:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:09:23,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901646135] [2023-12-19 01:09:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:09:23,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:09:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:09:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:09:25,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:09:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901646135] [2023-12-19 01:09:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901646135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:09:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338371317] [2023-12-19 01:09:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:09:25,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:09:25,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:09:25,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:09:25,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 01:09:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:09:25,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-19 01:09:25,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:09:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:09:27,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:09:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:09:32,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338371317] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:09:32,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:09:32,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-12-19 01:09:32,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411585890] [2023-12-19 01:09:32,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:09:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-19 01:09:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:09:32,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-19 01:09:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4320, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 01:09:32,836 INFO L87 Difference]: Start difference. First operand 343690 states and 410445 transitions. Second operand has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:14:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:14:39,141 INFO L93 Difference]: Finished difference Result 1188519 states and 1412950 transitions. [2023-12-19 01:14:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 490 states. [2023-12-19 01:14:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 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 161 [2023-12-19 01:14:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:14:41,773 INFO L225 Difference]: With dead ends: 1188519 [2023-12-19 01:14:41,773 INFO L226 Difference]: Without dead ends: 1087663 [2023-12-19 01:14:42,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 550 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132046 ImplicationChecksByTransitivity, 181.1s TimeCoverageRelationStatistics Valid=33987, Invalid=270165, Unknown=0, NotChecked=0, Total=304152 [2023-12-19 01:14:42,176 INFO L413 NwaCegarLoop]: 1751 mSDtfsCounter, 34490 mSDsluCounter, 36366 mSDsCounter, 0 mSdLazyCounter, 11321 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34490 SdHoareTripleChecker+Valid, 38117 SdHoareTripleChecker+Invalid, 11902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 11321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:14:42,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34490 Valid, 38117 Invalid, 11902 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [581 Valid, 11321 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2023-12-19 01:14:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087663 states.