/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:32:47,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:32:47,492 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 12:32:47,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:32:47,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:32:47,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:32:47,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:32:47,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:32:47,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:32:47,511 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:32:47,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:32:47,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:32:47,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:32:47,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:32:47,512 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:32:47,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:32:47,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:32:47,513 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:32:47,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:32:47,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:32:47,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:32:47,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:32:47,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:32:47,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:32:47,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:32:47,515 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:32:47,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:32:47,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:32:47,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:32:47,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:32:47,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:32:47,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:32:47,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:32:47,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:32:47,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:32:47,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:32:47,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:32:47,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:32:47,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:32:47,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:32:47,519 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:32:47,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:32:47,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:32:47,519 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:32:47,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:32:47,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:32:47,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:32:47,722 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:32:47,723 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:32:47,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-12-20 12:32:48,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:32:49,009 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:32:49,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-12-20 12:32:49,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/540e90b50/989a1243652440219d6228538fcadb58/FLAGd81761461 [2023-12-20 12:32:49,045 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/540e90b50/989a1243652440219d6228538fcadb58 [2023-12-20 12:32:49,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:32:49,048 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:32:49,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:32:49,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:32:49,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:32:49,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:32:49" (1/1) ... [2023-12-20 12:32:49,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77975754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:49, skipping insertion in model container [2023-12-20 12:32:49,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:32:49" (1/1) ... [2023-12-20 12:32:49,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:32:49,400 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.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2023-12-20 12:32:49,443 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.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2023-12-20 12:32:49,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:32:49,976 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:32:50,015 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.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2023-12-20 12:32:50,022 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.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2023-12-20 12:32:50,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:32:50,349 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:32:50,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50 WrapperNode [2023-12-20 12:32:50,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:32:50,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:32:50,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:32:50,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:32:50,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:50,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:50,627 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-12-20 12:32:50,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:32:50,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:32:50,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:32:50,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:32:50,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:50,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:50,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:50,878 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 12:32:50,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:50,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:50,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:50,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:51,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:51,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:51,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:32:51,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:32:51,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:32:51,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:32:51,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (1/1) ... [2023-12-20 12:32:51,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:32:51,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:51,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 12:32:51,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 12:32:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:32:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:32:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:32:51,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:32:51,243 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:32:51,245 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:32:54,138 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:32:54,178 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:32:54,178 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:32:54,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:32:54 BoogieIcfgContainer [2023-12-20 12:32:54,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:32:54,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:32:54,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:32:54,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:32:54,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:32:49" (1/3) ... [2023-12-20 12:32:54,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54461681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:32:54, skipping insertion in model container [2023-12-20 12:32:54,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:50" (2/3) ... [2023-12-20 12:32:54,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54461681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:32:54, skipping insertion in model container [2023-12-20 12:32:54,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:32:54" (3/3) ... [2023-12-20 12:32:54,184 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-12-20 12:32:54,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:32:54,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:32:54,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:32:54,236 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;@ed04733, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:32:54,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:32:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 12:32:54,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:54,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:54,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:54,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:54,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1782453649, now seen corresponding path program 1 times [2023-12-20 12:32:54,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:54,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175033486] [2023-12-20 12:32:54,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:54,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:54,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:54,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175033486] [2023-12-20 12:32:54,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175033486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:54,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:54,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:32:54,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659344318] [2023-12-20 12:32:54,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:54,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:32:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:54,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:32:54,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:32:54,375 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:54,438 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-12-20 12:32:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:32:54,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-20 12:32:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:54,457 INFO L225 Difference]: With dead ends: 1597 [2023-12-20 12:32:54,458 INFO L226 Difference]: Without dead ends: 805 [2023-12-20 12:32:54,468 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 [2023-12-20 12:32:54,471 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:54,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-20 12:32:54,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-20 12:32:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-12-20 12:32:54,520 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 15 [2023-12-20 12:32:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:54,520 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-12-20 12:32:54,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:54,521 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-12-20 12:32:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 12:32:54,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:54,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:54,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:32:54,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:54,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:54,522 INFO L85 PathProgramCache]: Analyzing trace with hash -52894088, now seen corresponding path program 1 times [2023-12-20 12:32:54,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:54,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039747318] [2023-12-20 12:32:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:54,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039747318] [2023-12-20 12:32:54,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039747318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:54,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:54,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:32:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342935173] [2023-12-20 12:32:54,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:54,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:32:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:32:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:54,589 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:57,546 INFO L93 Difference]: Finished difference Result 2309 states and 4397 transitions. [2023-12-20 12:32:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:32:57,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-20 12:32:57,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:57,570 INFO L225 Difference]: With dead ends: 2309 [2023-12-20 12:32:57,570 INFO L226 Difference]: Without dead ends: 1556 [2023-12-20 12:32:57,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:57,576 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 888 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:57,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 510 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 12:32:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-20 12:32:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-12-20 12:32:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.6415701415701416) internal successors, (2551), 1555 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2551 transitions. [2023-12-20 12:32:57,626 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2551 transitions. Word has length 15 [2023-12-20 12:32:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:57,626 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2551 transitions. [2023-12-20 12:32:57,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2551 transitions. [2023-12-20 12:32:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:32:57,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:57,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:32:57,631 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:57,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1602115405, now seen corresponding path program 1 times [2023-12-20 12:32:57,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:57,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160293762] [2023-12-20 12:32:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160293762] [2023-12-20 12:32:57,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160293762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:57,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:57,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:32:57,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977448320] [2023-12-20 12:32:57,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:57,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:32:57,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:57,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:32:57,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:32:57,776 INFO L87 Difference]: Start difference. First operand 1556 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:57,821 INFO L93 Difference]: Finished difference Result 1590 states and 2603 transitions. [2023-12-20 12:32:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:32:57,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-20 12:32:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:57,825 INFO L225 Difference]: With dead ends: 1590 [2023-12-20 12:32:57,826 INFO L226 Difference]: Without dead ends: 1556 [2023-12-20 12:32:57,826 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 [2023-12-20 12:32:57,827 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:57,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-20 12:32:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-12-20 12:32:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.6312741312741312) internal successors, (2535), 1555 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2535 transitions. [2023-12-20 12:32:57,850 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2535 transitions. Word has length 17 [2023-12-20 12:32:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:57,850 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2535 transitions. [2023-12-20 12:32:57,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2535 transitions. [2023-12-20 12:32:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 12:32:57,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:57,851 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] [2023-12-20 12:32:57,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:32:57,851 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:57,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1530211809, now seen corresponding path program 1 times [2023-12-20 12:32:57,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:57,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229318219] [2023-12-20 12:32:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:57,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:57,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:57,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229318219] [2023-12-20 12:32:57,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229318219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:57,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:57,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:32:57,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735609723] [2023-12-20 12:32:57,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:57,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:32:57,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:57,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:32:57,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:32:57,921 INFO L87 Difference]: Start difference. First operand 1556 states and 2535 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:58,015 INFO L93 Difference]: Finished difference Result 1742 states and 2829 transitions. [2023-12-20 12:32:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 12:32:58,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-20 12:32:58,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:58,023 INFO L225 Difference]: With dead ends: 1742 [2023-12-20 12:32:58,023 INFO L226 Difference]: Without dead ends: 1711 [2023-12-20 12:32:58,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:32:58,025 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:58,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-12-20 12:32:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1585. [2023-12-20 12:32:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.6304485154769426) internal successors, (2581), 1584 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2581 transitions. [2023-12-20 12:32:58,051 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2581 transitions. Word has length 32 [2023-12-20 12:32:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:58,052 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2581 transitions. [2023-12-20 12:32:58,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2581 transitions. [2023-12-20 12:32:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:32:58,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:58,053 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] [2023-12-20 12:32:58,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:32:58,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:58,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:58,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1777423345, now seen corresponding path program 1 times [2023-12-20 12:32:58,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:58,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934925135] [2023-12-20 12:32:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:58,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:58,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:58,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934925135] [2023-12-20 12:32:58,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934925135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:58,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:58,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:32:58,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249778952] [2023-12-20 12:32:58,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:58,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:32:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:58,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:32:58,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:58,093 INFO L87 Difference]: Start difference. First operand 1585 states and 2581 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:58,122 INFO L93 Difference]: Finished difference Result 1694 states and 2752 transitions. [2023-12-20 12:32:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:32:58,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 12:32:58,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:58,127 INFO L225 Difference]: With dead ends: 1694 [2023-12-20 12:32:58,127 INFO L226 Difference]: Without dead ends: 1634 [2023-12-20 12:32:58,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:58,129 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:58,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-12-20 12:32:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1630. [2023-12-20 12:32:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.6271498771498771) internal successors, (2649), 1629 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2649 transitions. [2023-12-20 12:32:58,155 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2649 transitions. Word has length 34 [2023-12-20 12:32:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:58,155 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2649 transitions. [2023-12-20 12:32:58,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2649 transitions. [2023-12-20 12:32:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:32:58,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:58,156 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] [2023-12-20 12:32:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:32:58,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:58,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1775278393, now seen corresponding path program 1 times [2023-12-20 12:32:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394699161] [2023-12-20 12:32:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:58,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394699161] [2023-12-20 12:32:58,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394699161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:58,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:58,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:32:58,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319064690] [2023-12-20 12:32:58,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:58,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:32:58,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:58,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:32:58,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:32:58,242 INFO L87 Difference]: Start difference. First operand 1630 states and 2649 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:58,372 INFO L93 Difference]: Finished difference Result 1737 states and 2813 transitions. [2023-12-20 12:32:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:32:58,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 12:32:58,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:58,378 INFO L225 Difference]: With dead ends: 1737 [2023-12-20 12:32:58,378 INFO L226 Difference]: Without dead ends: 1632 [2023-12-20 12:32:58,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:32:58,382 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 4420 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:58,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 1588 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-12-20 12:32:58,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2023-12-20 12:32:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.625921375921376) internal successors, (2647), 1629 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2647 transitions. [2023-12-20 12:32:58,420 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2647 transitions. Word has length 34 [2023-12-20 12:32:58,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:58,421 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2647 transitions. [2023-12-20 12:32:58,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2647 transitions. [2023-12-20 12:32:58,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 12:32:58,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:58,423 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] [2023-12-20 12:32:58,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:32:58,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:58,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash 672589841, now seen corresponding path program 1 times [2023-12-20 12:32:58,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:58,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886041852] [2023-12-20 12:32:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:58,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886041852] [2023-12-20 12:32:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886041852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:58,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:58,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:32:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010103106] [2023-12-20 12:32:58,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:58,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:32:58,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:32:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:32:58,562 INFO L87 Difference]: Start difference. First operand 1630 states and 2647 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:58,596 INFO L93 Difference]: Finished difference Result 1638 states and 2656 transitions. [2023-12-20 12:32:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:32:58,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-20 12:32:58,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:58,601 INFO L225 Difference]: With dead ends: 1638 [2023-12-20 12:32:58,601 INFO L226 Difference]: Without dead ends: 1636 [2023-12-20 12:32:58,602 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 [2023-12-20 12:32:58,603 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 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 [2023-12-20 12:32:58,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-20 12:32:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2023-12-20 12:32:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.6237745098039216) internal successors, (2650), 1633 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2650 transitions. [2023-12-20 12:32:58,628 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2650 transitions. Word has length 35 [2023-12-20 12:32:58,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:58,628 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2650 transitions. [2023-12-20 12:32:58,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2650 transitions. [2023-12-20 12:32:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:32:58,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:58,630 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] [2023-12-20 12:32:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:32:58,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:58,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:58,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1662874585, now seen corresponding path program 1 times [2023-12-20 12:32:58,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:58,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392603962] [2023-12-20 12:32:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:58,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:58,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392603962] [2023-12-20 12:32:58,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392603962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:58,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:58,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:32:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533049467] [2023-12-20 12:32:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:58,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:32:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:32:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:58,658 INFO L87 Difference]: Start difference. First operand 1634 states and 2650 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:58,683 INFO L93 Difference]: Finished difference Result 1836 states and 2950 transitions. [2023-12-20 12:32:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:32:58,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 12:32:58,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:58,688 INFO L225 Difference]: With dead ends: 1836 [2023-12-20 12:32:58,689 INFO L226 Difference]: Without dead ends: 1727 [2023-12-20 12:32:58,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:58,690 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 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 [2023-12-20 12:32:58,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-12-20 12:32:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1725. [2023-12-20 12:32:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1723 states have (on average 1.6140452698781196) internal successors, (2781), 1724 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2781 transitions. [2023-12-20 12:32:58,719 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2781 transitions. Word has length 36 [2023-12-20 12:32:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:58,720 INFO L495 AbstractCegarLoop]: Abstraction has 1725 states and 2781 transitions. [2023-12-20 12:32:58,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2781 transitions. [2023-12-20 12:32:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:32:58,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:58,720 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] [2023-12-20 12:32:58,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:32:58,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:58,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1743359271, now seen corresponding path program 1 times [2023-12-20 12:32:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:58,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568268476] [2023-12-20 12:32:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:58,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:58,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:58,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568268476] [2023-12-20 12:32:58,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568268476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:58,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:58,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:32:58,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224637823] [2023-12-20 12:32:58,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:58,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:32:58,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:58,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:32:58,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:58,747 INFO L87 Difference]: Start difference. First operand 1725 states and 2781 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:58,773 INFO L93 Difference]: Finished difference Result 2093 states and 3315 transitions. [2023-12-20 12:32:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:32:58,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 12:32:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:58,778 INFO L225 Difference]: With dead ends: 2093 [2023-12-20 12:32:58,778 INFO L226 Difference]: Without dead ends: 1893 [2023-12-20 12:32:58,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:58,779 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 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 [2023-12-20 12:32:58,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:58,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-12-20 12:32:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1891. [2023-12-20 12:32:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1889 states have (on average 1.5939650608787719) internal successors, (3011), 1890 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 3011 transitions. [2023-12-20 12:32:58,809 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 3011 transitions. Word has length 36 [2023-12-20 12:32:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:58,809 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 3011 transitions. [2023-12-20 12:32:58,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 3011 transitions. [2023-12-20 12:32:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 12:32:58,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:58,810 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] [2023-12-20 12:32:58,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:32:58,810 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:58,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1790191284, now seen corresponding path program 1 times [2023-12-20 12:32:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:58,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045830433] [2023-12-20 12:32:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:58,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:58,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:58,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045830433] [2023-12-20 12:32:58,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045830433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:58,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:58,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:32:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670252167] [2023-12-20 12:32:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:32:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:32:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:58,834 INFO L87 Difference]: Start difference. First operand 1891 states and 3011 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:58,862 INFO L93 Difference]: Finished difference Result 2282 states and 3585 transitions. [2023-12-20 12:32:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:32:58,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-20 12:32:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:58,868 INFO L225 Difference]: With dead ends: 2282 [2023-12-20 12:32:58,868 INFO L226 Difference]: Without dead ends: 2063 [2023-12-20 12:32:58,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:58,869 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 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 [2023-12-20 12:32:58,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-12-20 12:32:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2061. [2023-12-20 12:32:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2059 states have (on average 1.5779504613890238) internal successors, (3249), 2060 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3249 transitions. [2023-12-20 12:32:58,902 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3249 transitions. Word has length 38 [2023-12-20 12:32:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:58,902 INFO L495 AbstractCegarLoop]: Abstraction has 2061 states and 3249 transitions. [2023-12-20 12:32:58,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3249 transitions. [2023-12-20 12:32:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:32:58,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:58,903 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:32:58,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:32:58,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:58,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1496014032, now seen corresponding path program 1 times [2023-12-20 12:32:58,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:58,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081496353] [2023-12-20 12:32:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:58,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:32:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081496353] [2023-12-20 12:32:59,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081496353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:59,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:59,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:32:59,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913831167] [2023-12-20 12:32:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:59,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:32:59,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:59,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:32:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:32:59,020 INFO L87 Difference]: Start difference. First operand 2061 states and 3249 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:59,102 INFO L93 Difference]: Finished difference Result 3785 states and 5697 transitions. [2023-12-20 12:32:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:32:59,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 50 [2023-12-20 12:32:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:59,113 INFO L225 Difference]: With dead ends: 3785 [2023-12-20 12:32:59,113 INFO L226 Difference]: Without dead ends: 3251 [2023-12-20 12:32:59,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:32:59,115 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3055 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:59,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3055 Valid, 3130 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2023-12-20 12:32:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2593. [2023-12-20 12:32:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2591 states have (on average 1.5426476263990738) internal successors, (3997), 2592 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3997 transitions. [2023-12-20 12:32:59,168 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3997 transitions. Word has length 50 [2023-12-20 12:32:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:59,168 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 3997 transitions. [2023-12-20 12:32:59,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3997 transitions. [2023-12-20 12:32:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:32:59,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:59,169 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:32:59,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:32:59,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:59,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1910219824, now seen corresponding path program 1 times [2023-12-20 12:32:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:59,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441981420] [2023-12-20 12:32:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:59,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:32:59,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:59,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441981420] [2023-12-20 12:32:59,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441981420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:59,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:59,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:32:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422750818] [2023-12-20 12:32:59,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:59,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:32:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:32:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:32:59,251 INFO L87 Difference]: Start difference. First operand 2593 states and 3997 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:59,345 INFO L93 Difference]: Finished difference Result 4317 states and 6445 transitions. [2023-12-20 12:32:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:32:59,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 50 [2023-12-20 12:32:59,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:59,363 INFO L225 Difference]: With dead ends: 4317 [2023-12-20 12:32:59,363 INFO L226 Difference]: Without dead ends: 3783 [2023-12-20 12:32:59,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:32:59,365 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:59,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2023-12-20 12:32:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3393. [2023-12-20 12:32:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3391 states have (on average 1.506635210852256) internal successors, (5109), 3392 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 5109 transitions. [2023-12-20 12:32:59,436 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 5109 transitions. Word has length 50 [2023-12-20 12:32:59,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:59,436 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 5109 transitions. [2023-12-20 12:32:59,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 5109 transitions. [2023-12-20 12:32:59,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:32:59,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:59,437 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] [2023-12-20 12:32:59,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:32:59,437 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:59,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1024014232, now seen corresponding path program 1 times [2023-12-20 12:32:59,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:59,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249133535] [2023-12-20 12:32:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:59,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249133535] [2023-12-20 12:32:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249133535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:32:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094030434] [2023-12-20 12:32:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:32:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:32:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:59,505 INFO L87 Difference]: Start difference. First operand 3393 states and 5109 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:59,607 INFO L93 Difference]: Finished difference Result 4756 states and 7059 transitions. [2023-12-20 12:32:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:32:59,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-20 12:32:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:59,618 INFO L225 Difference]: With dead ends: 4756 [2023-12-20 12:32:59,618 INFO L226 Difference]: Without dead ends: 2890 [2023-12-20 12:32:59,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:32:59,622 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 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 [2023-12-20 12:32:59,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2023-12-20 12:32:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888. [2023-12-20 12:32:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2886 states have (on average 1.5273735273735274) internal successors, (4408), 2887 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4408 transitions. [2023-12-20 12:32:59,699 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4408 transitions. Word has length 52 [2023-12-20 12:32:59,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:59,699 INFO L495 AbstractCegarLoop]: Abstraction has 2888 states and 4408 transitions. [2023-12-20 12:32:59,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4408 transitions. [2023-12-20 12:32:59,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:32:59,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:59,701 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:32:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:32:59,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:59,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash -350989803, now seen corresponding path program 1 times [2023-12-20 12:32:59,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124210611] [2023-12-20 12:32:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:32:59,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124210611] [2023-12-20 12:32:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124210611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:59,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:59,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:32:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19768655] [2023-12-20 12:32:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:59,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:32:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:32:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:32:59,785 INFO L87 Difference]: Start difference. First operand 2888 states and 4408 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:59,881 INFO L93 Difference]: Finished difference Result 4048 states and 6068 transitions. [2023-12-20 12:32:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:32:59,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 52 [2023-12-20 12:32:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:59,887 INFO L225 Difference]: With dead ends: 4048 [2023-12-20 12:32:59,887 INFO L226 Difference]: Without dead ends: 3662 [2023-12-20 12:32:59,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:32:59,889 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3045 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:59,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3045 Valid, 3130 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:32:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2023-12-20 12:32:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3272. [2023-12-20 12:32:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3270 states have (on average 1.5143730886850153) internal successors, (4952), 3271 states have internal predecessors, (4952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4952 transitions. [2023-12-20 12:32:59,963 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4952 transitions. Word has length 52 [2023-12-20 12:32:59,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:59,963 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4952 transitions. [2023-12-20 12:32:59,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4952 transitions. [2023-12-20 12:32:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 12:32:59,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:59,964 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] [2023-12-20 12:32:59,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:32:59,964 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:59,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1851821966, now seen corresponding path program 1 times [2023-12-20 12:32:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:59,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883351531] [2023-12-20 12:32:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:59,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:00,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:00,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883351531] [2023-12-20 12:33:00,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883351531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:33:00,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:33:00,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:33:00,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060430763] [2023-12-20 12:33:00,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:33:00,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:33:00,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:00,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:33:00,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:00,041 INFO L87 Difference]: Start difference. First operand 3272 states and 4952 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:00,093 INFO L93 Difference]: Finished difference Result 4140 states and 6178 transitions. [2023-12-20 12:33:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:33:00,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 12:33:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:00,097 INFO L225 Difference]: With dead ends: 4140 [2023-12-20 12:33:00,097 INFO L226 Difference]: Without dead ends: 2410 [2023-12-20 12:33:00,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:00,101 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 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 [2023-12-20 12:33:00,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:33:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2023-12-20 12:33:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2408. [2023-12-20 12:33:00,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2406 states have (on average 1.541978387364921) internal successors, (3710), 2407 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3710 transitions. [2023-12-20 12:33:00,148 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3710 transitions. Word has length 53 [2023-12-20 12:33:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:00,149 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3710 transitions. [2023-12-20 12:33:00,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:00,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3710 transitions. [2023-12-20 12:33:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 12:33:00,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:00,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:33:00,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:33:00,150 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:00,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash -232466016, now seen corresponding path program 1 times [2023-12-20 12:33:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:00,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119759514] [2023-12-20 12:33:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:00,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:00,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119759514] [2023-12-20 12:33:00,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119759514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:33:00,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:33:00,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:33:00,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972148597] [2023-12-20 12:33:00,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:33:00,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:33:00,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:00,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:33:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:00,242 INFO L87 Difference]: Start difference. First operand 2408 states and 3710 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:00,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:00,279 INFO L93 Difference]: Finished difference Result 2844 states and 4315 transitions. [2023-12-20 12:33:00,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:33:00,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 12:33:00,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:00,283 INFO L225 Difference]: With dead ends: 2844 [2023-12-20 12:33:00,283 INFO L226 Difference]: Without dead ends: 1978 [2023-12-20 12:33:00,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:00,285 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 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 [2023-12-20 12:33:00,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:33:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-12-20 12:33:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1976. [2023-12-20 12:33:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1974 states have (on average 1.5694022289766971) internal successors, (3098), 1975 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 3098 transitions. [2023-12-20 12:33:00,319 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 3098 transitions. Word has length 55 [2023-12-20 12:33:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:00,319 INFO L495 AbstractCegarLoop]: Abstraction has 1976 states and 3098 transitions. [2023-12-20 12:33:00,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 3098 transitions. [2023-12-20 12:33:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 12:33:00,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:00,320 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:33:00,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 12:33:00,320 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:00,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:00,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1088629682, now seen corresponding path program 1 times [2023-12-20 12:33:00,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:00,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788506859] [2023-12-20 12:33:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:00,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:02,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:02,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788506859] [2023-12-20 12:33:02,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788506859] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:02,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933624021] [2023-12-20 12:33:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:02,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:02,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:02,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:02,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 12:33:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:02,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 12:33:02,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:33:02,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:33:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933624021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:02,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:02,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:33:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300472225] [2023-12-20 12:33:02,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:02,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:33:02,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:33:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:33:02,831 INFO L87 Difference]: Start difference. First operand 1976 states and 3098 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:05,418 INFO L93 Difference]: Finished difference Result 4219 states and 6046 transitions. [2023-12-20 12:33:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 12:33:05,418 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 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 57 [2023-12-20 12:33:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:05,423 INFO L225 Difference]: With dead ends: 4219 [2023-12-20 12:33:05,424 INFO L226 Difference]: Without dead ends: 3785 [2023-12-20 12:33:05,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:33:05,426 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 15532 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15532 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:05,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15532 Valid, 6234 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:33:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2023-12-20 12:33:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3597. [2023-12-20 12:33:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3595 states have (on average 1.423922114047288) internal successors, (5119), 3596 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5119 transitions. [2023-12-20 12:33:05,512 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5119 transitions. Word has length 57 [2023-12-20 12:33:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:05,512 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 5119 transitions. [2023-12-20 12:33:05,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:05,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5119 transitions. [2023-12-20 12:33:05,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:33:05,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:05,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:33:05,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 12:33:05,718 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,SelfDestructingSolverStorable16 [2023-12-20 12:33:05,719 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:05,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1913066465, now seen corresponding path program 1 times [2023-12-20 12:33:05,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:05,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222073979] [2023-12-20 12:33:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:05,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:06,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:06,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222073979] [2023-12-20 12:33:06,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222073979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:06,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974742200] [2023-12-20 12:33:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:06,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:06,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:06,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:06,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 12:33:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:06,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:33:06,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:07,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:07,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974742200] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:07,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:07,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-20 12:33:07,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123828089] [2023-12-20 12:33:07,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:07,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:33:07,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:07,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:33:07,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:33:07,871 INFO L87 Difference]: Start difference. First operand 3597 states and 5119 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:08,709 INFO L93 Difference]: Finished difference Result 7715 states and 10309 transitions. [2023-12-20 12:33:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 12:33:08,714 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 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 58 [2023-12-20 12:33:08,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:08,721 INFO L225 Difference]: With dead ends: 7715 [2023-12-20 12:33:08,721 INFO L226 Difference]: Without dead ends: 5937 [2023-12-20 12:33:08,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:33:08,724 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 16374 mSDsluCounter, 6328 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16374 SdHoareTripleChecker+Valid, 7821 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:08,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16374 Valid, 7821 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:33:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5937 states. [2023-12-20 12:33:08,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5937 to 5551. [2023-12-20 12:33:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5549 states have (on average 1.35573977293206) internal successors, (7523), 5550 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 7523 transitions. [2023-12-20 12:33:08,841 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 7523 transitions. Word has length 58 [2023-12-20 12:33:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:08,841 INFO L495 AbstractCegarLoop]: Abstraction has 5551 states and 7523 transitions. [2023-12-20 12:33:08,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 7523 transitions. [2023-12-20 12:33:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:33:08,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:08,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:33:08,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 12:33:09,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 12:33:09,046 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:09,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1390462255, now seen corresponding path program 1 times [2023-12-20 12:33:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:09,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736761097] [2023-12-20 12:33:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736761097] [2023-12-20 12:33:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736761097] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822669963] [2023-12-20 12:33:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:09,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:09,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:09,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:09,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 12:33:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:09,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:33:09,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:09,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:10,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822669963] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:10,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:10,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-20 12:33:10,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682717585] [2023-12-20 12:33:10,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:10,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:33:10,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:33:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:33:10,346 INFO L87 Difference]: Start difference. First operand 5551 states and 7523 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:10,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:10,948 INFO L93 Difference]: Finished difference Result 12512 states and 16219 transitions. [2023-12-20 12:33:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 12:33:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 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 58 [2023-12-20 12:33:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:10,960 INFO L225 Difference]: With dead ends: 12512 [2023-12-20 12:33:10,960 INFO L226 Difference]: Without dead ends: 9090 [2023-12-20 12:33:10,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:33:10,965 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 12078 mSDsluCounter, 6217 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12078 SdHoareTripleChecker+Valid, 7709 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:10,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12078 Valid, 7709 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:33:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9090 states. [2023-12-20 12:33:11,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9090 to 8852. [2023-12-20 12:33:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8852 states, 8850 states have (on average 1.3131073446327683) internal successors, (11621), 8851 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 11621 transitions. [2023-12-20 12:33:11,184 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 11621 transitions. Word has length 58 [2023-12-20 12:33:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:11,184 INFO L495 AbstractCegarLoop]: Abstraction has 8852 states and 11621 transitions. [2023-12-20 12:33:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 11621 transitions. [2023-12-20 12:33:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:33:11,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:11,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:33:11,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 12:33:11,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:11,391 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:11,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -578947025, now seen corresponding path program 1 times [2023-12-20 12:33:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117673906] [2023-12-20 12:33:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117673906] [2023-12-20 12:33:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117673906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856412506] [2023-12-20 12:33:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:11,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:11,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:11,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:11,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 12:33:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:11,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:33:11,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:12,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:12,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856412506] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:12,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:12,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 12:33:12,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044207684] [2023-12-20 12:33:12,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:12,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:33:12,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:33:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:33:12,791 INFO L87 Difference]: Start difference. First operand 8852 states and 11621 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:13,417 INFO L93 Difference]: Finished difference Result 15747 states and 20229 transitions. [2023-12-20 12:33:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:33:13,417 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 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 58 [2023-12-20 12:33:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:13,429 INFO L225 Difference]: With dead ends: 15747 [2023-12-20 12:33:13,429 INFO L226 Difference]: Without dead ends: 9546 [2023-12-20 12:33:13,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 12:33:13,436 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 20810 mSDsluCounter, 4632 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20810 SdHoareTripleChecker+Valid, 6132 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:13,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20810 Valid, 6132 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:33:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2023-12-20 12:33:13,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 8964. [2023-12-20 12:33:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8962 states have (on average 1.3012720374916313) internal successors, (11662), 8963 states have internal predecessors, (11662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 11662 transitions. [2023-12-20 12:33:13,670 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 11662 transitions. Word has length 58 [2023-12-20 12:33:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:13,670 INFO L495 AbstractCegarLoop]: Abstraction has 8964 states and 11662 transitions. [2023-12-20 12:33:13,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 11662 transitions. [2023-12-20 12:33:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:33:13,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:13,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:33:13,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 12:33:13,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:13,877 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:13,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:13,877 INFO L85 PathProgramCache]: Analyzing trace with hash -439807828, now seen corresponding path program 1 times [2023-12-20 12:33:13,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:13,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671652062] [2023-12-20 12:33:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:13,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:14,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:14,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671652062] [2023-12-20 12:33:14,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671652062] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:14,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015842563] [2023-12-20 12:33:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:14,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:14,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:14,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 12:33:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:14,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 12:33:14,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:15,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:15,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015842563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:15,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:15,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-20 12:33:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960557787] [2023-12-20 12:33:15,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:15,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 12:33:15,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:15,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 12:33:15,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 12:33:15,911 INFO L87 Difference]: Start difference. First operand 8964 states and 11662 transitions. Second operand has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:20,570 INFO L93 Difference]: Finished difference Result 15824 states and 20147 transitions. [2023-12-20 12:33:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-20 12:33:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 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 59 [2023-12-20 12:33:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:20,584 INFO L225 Difference]: With dead ends: 15824 [2023-12-20 12:33:20,585 INFO L226 Difference]: Without dead ends: 11056 [2023-12-20 12:33:20,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2207, Invalid=9135, Unknown=0, NotChecked=0, Total=11342 [2023-12-20 12:33:20,593 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 12136 mSDsluCounter, 20120 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12136 SdHoareTripleChecker+Valid, 21633 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:20,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12136 Valid, 21633 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 12:33:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2023-12-20 12:33:20,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 6362. [2023-12-20 12:33:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 6360 states have (on average 1.32625786163522) internal successors, (8435), 6361 states have internal predecessors, (8435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8435 transitions. [2023-12-20 12:33:20,859 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8435 transitions. Word has length 59 [2023-12-20 12:33:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:20,859 INFO L495 AbstractCegarLoop]: Abstraction has 6362 states and 8435 transitions. [2023-12-20 12:33:20,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8435 transitions. [2023-12-20 12:33:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 12:33:20,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:20,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:33:20,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 12:33:21,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:21,065 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:21,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:21,065 INFO L85 PathProgramCache]: Analyzing trace with hash 521135761, now seen corresponding path program 1 times [2023-12-20 12:33:21,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:21,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845118740] [2023-12-20 12:33:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:21,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:21,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:21,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845118740] [2023-12-20 12:33:21,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845118740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:21,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163366329] [2023-12-20 12:33:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:21,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:21,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:21,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:21,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 12:33:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:21,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 12:33:21,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:22,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163366329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:23,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:23,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-20 12:33:23,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113663840] [2023-12-20 12:33:23,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:23,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 12:33:23,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:23,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 12:33:23,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-12-20 12:33:23,145 INFO L87 Difference]: Start difference. First operand 6362 states and 8435 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:24,451 INFO L93 Difference]: Finished difference Result 7692 states and 10079 transitions. [2023-12-20 12:33:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 12:33:24,453 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 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 60 [2023-12-20 12:33:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:24,458 INFO L225 Difference]: With dead ends: 7692 [2023-12-20 12:33:24,458 INFO L226 Difference]: Without dead ends: 5088 [2023-12-20 12:33:24,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:33:24,464 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 8234 mSDsluCounter, 20708 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8234 SdHoareTripleChecker+Valid, 22201 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:24,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8234 Valid, 22201 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:33:24,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2023-12-20 12:33:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 4984. [2023-12-20 12:33:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4982 states have (on average 1.3514652749899638) internal successors, (6733), 4983 states have internal predecessors, (6733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 6733 transitions. [2023-12-20 12:33:24,629 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 6733 transitions. Word has length 60 [2023-12-20 12:33:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:24,629 INFO L495 AbstractCegarLoop]: Abstraction has 4984 states and 6733 transitions. [2023-12-20 12:33:24,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 6733 transitions. [2023-12-20 12:33:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 12:33:24,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:24,631 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] [2023-12-20 12:33:24,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 12:33:24,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:24,834 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:24,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash -128125831, now seen corresponding path program 1 times [2023-12-20 12:33:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:24,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843973917] [2023-12-20 12:33:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:24,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:24,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843973917] [2023-12-20 12:33:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843973917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:33:24,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:33:24,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:33:24,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111856431] [2023-12-20 12:33:24,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:33:24,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:33:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:24,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:33:24,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:24,935 INFO L87 Difference]: Start difference. First operand 4984 states and 6733 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:27,541 INFO L93 Difference]: Finished difference Result 7990 states and 11660 transitions. [2023-12-20 12:33:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:33:27,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 12:33:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:27,547 INFO L225 Difference]: With dead ends: 7990 [2023-12-20 12:33:27,547 INFO L226 Difference]: Without dead ends: 6486 [2023-12-20 12:33:27,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:27,550 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 753 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:27,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1290 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 12:33:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2023-12-20 12:33:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 6486. [2023-12-20 12:33:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6486 states, 6484 states have (on average 1.370913016656385) internal successors, (8889), 6485 states have internal predecessors, (8889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6486 states to 6486 states and 8889 transitions. [2023-12-20 12:33:27,695 INFO L78 Accepts]: Start accepts. Automaton has 6486 states and 8889 transitions. Word has length 86 [2023-12-20 12:33:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:27,695 INFO L495 AbstractCegarLoop]: Abstraction has 6486 states and 8889 transitions. [2023-12-20 12:33:27,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 6486 states and 8889 transitions. [2023-12-20 12:33:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 12:33:27,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:27,697 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] [2023-12-20 12:33:27,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 12:33:27,724 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:27,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2072546124, now seen corresponding path program 1 times [2023-12-20 12:33:27,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:27,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183879470] [2023-12-20 12:33:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:27,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183879470] [2023-12-20 12:33:27,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183879470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:33:27,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:33:27,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:33:27,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731564752] [2023-12-20 12:33:27,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:33:27,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:33:27,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:27,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:33:27,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:27,766 INFO L87 Difference]: Start difference. First operand 6486 states and 8889 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:30,419 INFO L93 Difference]: Finished difference Result 12498 states and 18129 transitions. [2023-12-20 12:33:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:33:30,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-20 12:33:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:30,430 INFO L225 Difference]: With dead ends: 12498 [2023-12-20 12:33:30,431 INFO L226 Difference]: Without dead ends: 9492 [2023-12-20 12:33:30,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:30,440 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 796 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:30,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 566 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 12:33:30,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2023-12-20 12:33:30,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 9490. [2023-12-20 12:33:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9490 states, 9488 states have (on average 1.31429173693086) internal successors, (12470), 9489 states have internal predecessors, (12470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9490 states to 9490 states and 12470 transitions. [2023-12-20 12:33:30,674 INFO L78 Accepts]: Start accepts. Automaton has 9490 states and 12470 transitions. Word has length 89 [2023-12-20 12:33:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:30,676 INFO L495 AbstractCegarLoop]: Abstraction has 9490 states and 12470 transitions. [2023-12-20 12:33:30,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9490 states and 12470 transitions. [2023-12-20 12:33:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 12:33:30,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:30,677 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] [2023-12-20 12:33:30,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 12:33:30,677 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:30,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1015921533, now seen corresponding path program 1 times [2023-12-20 12:33:30,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:30,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243190877] [2023-12-20 12:33:30,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:30,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:30,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:30,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243190877] [2023-12-20 12:33:30,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243190877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:33:30,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:33:30,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:33:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927965199] [2023-12-20 12:33:30,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:33:30,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:33:30,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:30,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:33:30,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:30,731 INFO L87 Difference]: Start difference. First operand 9490 states and 12470 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:33,438 INFO L93 Difference]: Finished difference Result 21510 states and 28872 transitions. [2023-12-20 12:33:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:33:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-20 12:33:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:33,452 INFO L225 Difference]: With dead ends: 21510 [2023-12-20 12:33:33,452 INFO L226 Difference]: Without dead ends: 15500 [2023-12-20 12:33:33,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:33:33,457 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 985 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:33,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 661 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 12:33:33,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15500 states. [2023-12-20 12:33:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15500 to 15498. [2023-12-20 12:33:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15498 states, 15496 states have (on average 1.267681982447083) internal successors, (19644), 15497 states have internal predecessors, (19644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15498 states to 15498 states and 19644 transitions. [2023-12-20 12:33:33,716 INFO L78 Accepts]: Start accepts. Automaton has 15498 states and 19644 transitions. Word has length 90 [2023-12-20 12:33:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:33,717 INFO L495 AbstractCegarLoop]: Abstraction has 15498 states and 19644 transitions. [2023-12-20 12:33:33,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 15498 states and 19644 transitions. [2023-12-20 12:33:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:33:33,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:33,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:33:33,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 12:33:33,719 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:33,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash -452363845, now seen corresponding path program 1 times [2023-12-20 12:33:33,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:33,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911422246] [2023-12-20 12:33:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:34,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:34,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911422246] [2023-12-20 12:33:34,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911422246] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:34,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416594615] [2023-12-20 12:33:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:34,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:34,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:34,406 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:34,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 12:33:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:34,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:33:34,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:35,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:36,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416594615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:36,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:36,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 12:33:36,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127802084] [2023-12-20 12:33:36,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:36,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 12:33:36,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:36,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 12:33:36,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 12:33:36,478 INFO L87 Difference]: Start difference. First operand 15498 states and 19644 transitions. Second operand has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:46,749 INFO L93 Difference]: Finished difference Result 22726 states and 28674 transitions. [2023-12-20 12:33:46,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-20 12:33:46,750 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 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 [2023-12-20 12:33:46,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:46,770 INFO L225 Difference]: With dead ends: 22726 [2023-12-20 12:33:46,770 INFO L226 Difference]: Without dead ends: 20040 [2023-12-20 12:33:46,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10828 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=4645, Invalid=27575, Unknown=0, NotChecked=0, Total=32220 [2023-12-20 12:33:46,785 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 23903 mSDsluCounter, 13167 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23903 SdHoareTripleChecker+Valid, 14708 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:46,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23903 Valid, 14708 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 12:33:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20040 states. [2023-12-20 12:33:47,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20040 to 17744. [2023-12-20 12:33:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17744 states, 17742 states have (on average 1.2618645023109007) internal successors, (22388), 17743 states have internal predecessors, (22388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17744 states to 17744 states and 22388 transitions. [2023-12-20 12:33:47,312 INFO L78 Accepts]: Start accepts. Automaton has 17744 states and 22388 transitions. Word has length 97 [2023-12-20 12:33:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:47,312 INFO L495 AbstractCegarLoop]: Abstraction has 17744 states and 22388 transitions. [2023-12-20 12:33:47,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 17744 states and 22388 transitions. [2023-12-20 12:33:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:33:47,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:47,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:33:47,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 12:33:47,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:47,520 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:47,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:47,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1863416823, now seen corresponding path program 1 times [2023-12-20 12:33:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:47,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613404123] [2023-12-20 12:33:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:48,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:48,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613404123] [2023-12-20 12:33:48,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613404123] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:48,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615135449] [2023-12-20 12:33:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:48,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:48,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:48,027 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) [2023-12-20 12:33:48,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 12:33:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:48,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 12:33:48,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:50,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615135449] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:58,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 25] total 60 [2023-12-20 12:33:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594832640] [2023-12-20 12:33:58,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:58,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:33:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:33:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3109, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:33:58,903 INFO L87 Difference]: Start difference. First operand 17744 states and 22388 transitions. Second operand has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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) [2023-12-20 12:34:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:34:32,959 INFO L93 Difference]: Finished difference Result 31525 states and 39266 transitions. [2023-12-20 12:34:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2023-12-20 12:34:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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 97 [2023-12-20 12:34:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:34:32,989 INFO L225 Difference]: With dead ends: 31525 [2023-12-20 12:34:32,989 INFO L226 Difference]: Without dead ends: 27466 [2023-12-20 12:34:33,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58781 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=17856, Invalid=124650, Unknown=0, NotChecked=0, Total=142506 [2023-12-20 12:34:33,004 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 31069 mSDsluCounter, 27325 mSDsCounter, 0 mSdLazyCounter, 3209 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31069 SdHoareTripleChecker+Valid, 28918 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:34:33,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31069 Valid, 28918 Invalid, 3552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [343 Valid, 3209 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 12:34:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27466 states. [2023-12-20 12:34:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27466 to 18673. [2023-12-20 12:34:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18673 states, 18671 states have (on average 1.2555835252530663) internal successors, (23443), 18672 states have internal predecessors, (23443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:34:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18673 states to 18673 states and 23443 transitions. [2023-12-20 12:34:33,603 INFO L78 Accepts]: Start accepts. Automaton has 18673 states and 23443 transitions. Word has length 97 [2023-12-20 12:34:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:34:33,604 INFO L495 AbstractCegarLoop]: Abstraction has 18673 states and 23443 transitions. [2023-12-20 12:34:33,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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) [2023-12-20 12:34:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 18673 states and 23443 transitions. [2023-12-20 12:34:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:34:33,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:34:33,605 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:34:33,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 12:34:33,806 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,SelfDestructingSolverStorable26 [2023-12-20 12:34:33,807 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:34:33,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:34:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1044704494, now seen corresponding path program 1 times [2023-12-20 12:34:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:34:33,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641205247] [2023-12-20 12:34:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:34:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 12:34:34,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:34:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641205247] [2023-12-20 12:34:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641205247] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:34:34,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060547400] [2023-12-20 12:34:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:34:34,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:34:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:34:34,656 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) [2023-12-20 12:34:34,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 12:34:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:34:34,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 12:34:34,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:34:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:36,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:34:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:34:38,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060547400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:34:38,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:34:38,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2023-12-20 12:34:38,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826261036] [2023-12-20 12:34:38,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:34:38,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 12:34:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:34:38,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 12:34:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:34:38,547 INFO L87 Difference]: Start difference. First operand 18673 states and 23443 transitions. Second operand has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:35:02,306 INFO L93 Difference]: Finished difference Result 24754 states and 30689 transitions. [2023-12-20 12:35:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-12-20 12:35:02,306 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 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 [2023-12-20 12:35:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:35:02,323 INFO L225 Difference]: With dead ends: 24754 [2023-12-20 12:35:02,323 INFO L226 Difference]: Without dead ends: 22046 [2023-12-20 12:35:02,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16843 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=7233, Invalid=43617, Unknown=0, NotChecked=0, Total=50850 [2023-12-20 12:35:02,330 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 23050 mSDsluCounter, 31703 mSDsCounter, 0 mSdLazyCounter, 4132 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23050 SdHoareTripleChecker+Valid, 33376 SdHoareTripleChecker+Invalid, 4423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 4132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:35:02,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23050 Valid, 33376 Invalid, 4423 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [291 Valid, 4132 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 12:35:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22046 states. [2023-12-20 12:35:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22046 to 19063. [2023-12-20 12:35:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19063 states, 19061 states have (on average 1.2534494517601384) internal successors, (23892), 19062 states have internal predecessors, (23892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19063 states to 19063 states and 23892 transitions. [2023-12-20 12:35:02,933 INFO L78 Accepts]: Start accepts. Automaton has 19063 states and 23892 transitions. Word has length 98 [2023-12-20 12:35:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:35:02,934 INFO L495 AbstractCegarLoop]: Abstraction has 19063 states and 23892 transitions. [2023-12-20 12:35:02,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 19063 states and 23892 transitions. [2023-12-20 12:35:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:35:02,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:35:02,935 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:35:02,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 12:35:03,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 12:35:03,140 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:35:03,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:35:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash -344913889, now seen corresponding path program 1 times [2023-12-20 12:35:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:35:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489779431] [2023-12-20 12:35:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:35:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:03,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:35:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489779431] [2023-12-20 12:35:03,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489779431] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:35:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849220075] [2023-12-20 12:35:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:03,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:35:03,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:35:03,967 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) [2023-12-20 12:35:04,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 12:35:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:04,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 12:35:04,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:35:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:06,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:35:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849220075] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:35:08,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:35:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 21] total 58 [2023-12-20 12:35:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223605435] [2023-12-20 12:35:08,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:35:08,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 12:35:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:35:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 12:35:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 12:35:08,998 INFO L87 Difference]: Start difference. First operand 19063 states and 23892 transitions. Second operand has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:35:53,770 INFO L93 Difference]: Finished difference Result 32385 states and 40020 transitions. [2023-12-20 12:35:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2023-12-20 12:35:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 12:35:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:35:53,798 INFO L225 Difference]: With dead ends: 32385 [2023-12-20 12:35:53,798 INFO L226 Difference]: Without dead ends: 30516 [2023-12-20 12:35:53,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48263 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=15068, Invalid=104302, Unknown=0, NotChecked=0, Total=119370 [2023-12-20 12:35:53,810 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 20457 mSDsluCounter, 31453 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20457 SdHoareTripleChecker+Valid, 33086 SdHoareTripleChecker+Invalid, 4347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:35:53,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20457 Valid, 33086 Invalid, 4347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [271 Valid, 4076 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 12:35:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30516 states. [2023-12-20 12:35:55,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30516 to 28405. [2023-12-20 12:35:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28405 states, 28403 states have (on average 1.2439531035454001) internal successors, (35332), 28404 states have internal predecessors, (35332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28405 states to 28405 states and 35332 transitions. [2023-12-20 12:35:55,378 INFO L78 Accepts]: Start accepts. Automaton has 28405 states and 35332 transitions. Word has length 99 [2023-12-20 12:35:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:35:55,378 INFO L495 AbstractCegarLoop]: Abstraction has 28405 states and 35332 transitions. [2023-12-20 12:35:55,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:35:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 28405 states and 35332 transitions. [2023-12-20 12:35:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:35:55,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:35:55,398 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:35:55,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 12:35:55,598 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,SelfDestructingSolverStorable28 [2023-12-20 12:35:55,598 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:35:55,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:35:55,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1670491045, now seen corresponding path program 1 times [2023-12-20 12:35:55,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:35:55,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109017644] [2023-12-20 12:35:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:35:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:57,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:35:57,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109017644] [2023-12-20 12:35:57,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109017644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:35:57,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620073310] [2023-12-20 12:35:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:35:57,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:35:57,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:35:57,221 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) [2023-12-20 12:35:57,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 12:35:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:35:57,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 12:35:57,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:35:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:35:59,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:36:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:36:05,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620073310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:36:05,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:36:05,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 21] total 63 [2023-12-20 12:36:05,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739669766] [2023-12-20 12:36:05,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:36:05,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-20 12:36:05,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:36:05,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-20 12:36:05,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=3568, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 12:36:05,631 INFO L87 Difference]: Start difference. First operand 28405 states and 35332 transitions. Second operand has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:38:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:38:55,657 INFO L93 Difference]: Finished difference Result 67456 states and 82551 transitions. [2023-12-20 12:38:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 500 states. [2023-12-20 12:38:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 12:38:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:38:55,729 INFO L225 Difference]: With dead ends: 67456 [2023-12-20 12:38:55,729 INFO L226 Difference]: Without dead ends: 59492 [2023-12-20 12:38:55,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131286 ImplicationChecksByTransitivity, 158.7s TimeCoverageRelationStatistics Valid=38252, Invalid=272554, Unknown=0, NotChecked=0, Total=310806 [2023-12-20 12:38:55,757 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 27554 mSDsluCounter, 35696 mSDsCounter, 0 mSdLazyCounter, 7673 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27554 SdHoareTripleChecker+Valid, 37349 SdHoareTripleChecker+Invalid, 8233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 7673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:38:55,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27554 Valid, 37349 Invalid, 8233 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [560 Valid, 7673 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-20 12:38:55,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59492 states. [2023-12-20 12:38:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59492 to 36142. [2023-12-20 12:38:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36142 states, 36140 states have (on average 1.2372717210846707) internal successors, (44715), 36141 states have internal predecessors, (44715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:38:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36142 states to 36142 states and 44715 transitions. [2023-12-20 12:38:58,675 INFO L78 Accepts]: Start accepts. Automaton has 36142 states and 44715 transitions. Word has length 99 [2023-12-20 12:38:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:38:58,675 INFO L495 AbstractCegarLoop]: Abstraction has 36142 states and 44715 transitions. [2023-12-20 12:38:58,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:38:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 36142 states and 44715 transitions. [2023-12-20 12:38:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:38:58,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:38:58,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:38:58,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 12:38:58,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:38:58,881 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:38:58,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:38:58,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1378580634, now seen corresponding path program 1 times [2023-12-20 12:38:58,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:38:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089186079] [2023-12-20 12:38:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:38:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:38:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:38:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:38:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089186079] [2023-12-20 12:38:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089186079] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:38:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103799062] [2023-12-20 12:38:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:38:59,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:38:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:38:59,771 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) [2023-12-20 12:38:59,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 12:38:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:38:59,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:38:59,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:39:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:01,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:39:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:04,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103799062] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:39:04,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:39:04,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 62 [2023-12-20 12:39:04,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545023432] [2023-12-20 12:39:04,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:39:04,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 12:39:04,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:39:04,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 12:39:04,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3410, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 12:39:04,403 INFO L87 Difference]: Start difference. First operand 36142 states and 44715 transitions. Second operand has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:39:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:39:26,304 INFO L93 Difference]: Finished difference Result 49011 states and 59994 transitions. [2023-12-20 12:39:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-20 12:39:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 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 [2023-12-20 12:39:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:39:26,341 INFO L225 Difference]: With dead ends: 49011 [2023-12-20 12:39:26,342 INFO L226 Difference]: Without dead ends: 44499 [2023-12-20 12:39:26,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12040 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=5036, Invalid=33576, Unknown=0, NotChecked=0, Total=38612 [2023-12-20 12:39:26,354 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 29027 mSDsluCounter, 29388 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29027 SdHoareTripleChecker+Valid, 30933 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:39:26,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29027 Valid, 30933 Invalid, 2262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [200 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 12:39:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44499 states. [2023-12-20 12:39:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44499 to 38991. [2023-12-20 12:39:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38991 states, 38989 states have (on average 1.235374079868681) internal successors, (48166), 38990 states have internal predecessors, (48166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:39:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38991 states to 38991 states and 48166 transitions. [2023-12-20 12:39:29,683 INFO L78 Accepts]: Start accepts. Automaton has 38991 states and 48166 transitions. Word has length 100 [2023-12-20 12:39:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:39:29,683 INFO L495 AbstractCegarLoop]: Abstraction has 38991 states and 48166 transitions. [2023-12-20 12:39:29,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:39:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 38991 states and 48166 transitions. [2023-12-20 12:39:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:39:29,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:39:29,685 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:39:29,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 12:39:29,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:39:29,890 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:39:29,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:39:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash 270429162, now seen corresponding path program 1 times [2023-12-20 12:39:29,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:39:29,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201004349] [2023-12-20 12:39:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:39:29,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:39:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:39:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:30,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:39:30,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201004349] [2023-12-20 12:39:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201004349] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:39:30,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887485565] [2023-12-20 12:39:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:39:30,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:39:30,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:39:30,705 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) [2023-12-20 12:39:30,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 12:39:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:39:30,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 12:39:30,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:39:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:32,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:39:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887485565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:39:35,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:39:35,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 19] total 60 [2023-12-20 12:39:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115504717] [2023-12-20 12:39:35,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:39:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:39:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:39:35,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:39:35,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3170, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:39:35,842 INFO L87 Difference]: Start difference. First operand 38991 states and 48166 transitions. Second operand has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 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) [2023-12-20 12:40:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:40:13,375 INFO L93 Difference]: Finished difference Result 58069 states and 71202 transitions. [2023-12-20 12:40:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-20 12:40:13,376 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 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 100 [2023-12-20 12:40:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:40:13,428 INFO L225 Difference]: With dead ends: 58069 [2023-12-20 12:40:13,428 INFO L226 Difference]: Without dead ends: 51519 [2023-12-20 12:40:13,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22381 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=9415, Invalid=56377, Unknown=0, NotChecked=0, Total=65792 [2023-12-20 12:40:13,440 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 25379 mSDsluCounter, 31542 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25379 SdHoareTripleChecker+Valid, 33112 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:40:13,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25379 Valid, 33112 Invalid, 3218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [171 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 12:40:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51519 states. [2023-12-20 12:40:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51519 to 45601. [2023-12-20 12:40:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45601 states, 45599 states have (on average 1.2313866532160793) internal successors, (56150), 45600 states have internal predecessors, (56150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45601 states to 45601 states and 56150 transitions. [2023-12-20 12:40:18,170 INFO L78 Accepts]: Start accepts. Automaton has 45601 states and 56150 transitions. Word has length 100 [2023-12-20 12:40:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:40:18,170 INFO L495 AbstractCegarLoop]: Abstraction has 45601 states and 56150 transitions. [2023-12-20 12:40:18,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 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) [2023-12-20 12:40:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 45601 states and 56150 transitions. [2023-12-20 12:40:18,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:40:18,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:40:18,172 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:40:18,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 12:40:18,377 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,SelfDestructingSolverStorable31 [2023-12-20 12:40:18,378 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:40:18,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:40:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1516062234, now seen corresponding path program 1 times [2023-12-20 12:40:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:40:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87028969] [2023-12-20 12:40:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:40:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:19,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:40:19,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87028969] [2023-12-20 12:40:19,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87028969] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:40:19,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896970095] [2023-12-20 12:40:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:19,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:40:19,143 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) [2023-12-20 12:40:19,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 12:40:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:19,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:40:19,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:40:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:21,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:40:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896970095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:40:24,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:40:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 21] total 60 [2023-12-20 12:40:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263250561] [2023-12-20 12:40:24,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:40:24,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:40:24,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:40:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:40:24,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3232, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:40:24,866 INFO L87 Difference]: Start difference. First operand 45601 states and 56150 transitions. Second operand has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:40:44,094 INFO L93 Difference]: Finished difference Result 64589 states and 78859 transitions. [2023-12-20 12:40:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-20 12:40:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 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 [2023-12-20 12:40:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:40:44,149 INFO L225 Difference]: With dead ends: 64589 [2023-12-20 12:40:44,150 INFO L226 Difference]: Without dead ends: 58393 [2023-12-20 12:40:44,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=4981, Invalid=26881, Unknown=0, NotChecked=0, Total=31862 [2023-12-20 12:40:44,159 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 22737 mSDsluCounter, 31844 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22737 SdHoareTripleChecker+Valid, 33409 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:40:44,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22737 Valid, 33409 Invalid, 2918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 12:40:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58393 states. [2023-12-20 12:40:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58393 to 45430. [2023-12-20 12:40:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45430 states, 45428 states have (on average 1.2315532270846175) internal successors, (55947), 45429 states have internal predecessors, (55947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45430 states to 45430 states and 55947 transitions. [2023-12-20 12:40:48,959 INFO L78 Accepts]: Start accepts. Automaton has 45430 states and 55947 transitions. Word has length 100 [2023-12-20 12:40:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:40:48,959 INFO L495 AbstractCegarLoop]: Abstraction has 45430 states and 55947 transitions. [2023-12-20 12:40:48,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 45430 states and 55947 transitions. [2023-12-20 12:40:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:40:48,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:40:48,961 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:40:48,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 12:40:49,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:49,166 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:40:49,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:40:49,166 INFO L85 PathProgramCache]: Analyzing trace with hash -347737969, now seen corresponding path program 1 times [2023-12-20 12:40:49,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:40:49,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283330631] [2023-12-20 12:40:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:40:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:49,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:40:49,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283330631] [2023-12-20 12:40:49,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283330631] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:40:49,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016519034] [2023-12-20 12:40:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:49,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:49,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:40:49,516 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) [2023-12-20 12:40:49,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 12:40:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:49,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:40:49,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:40:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:50,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:40:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016519034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:40:51,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:40:51,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-12-20 12:40:51,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195329016] [2023-12-20 12:40:51,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:40:51,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-20 12:40:51,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:40:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-20 12:40:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:40:51,672 INFO L87 Difference]: Start difference. First operand 45430 states and 55947 transitions. Second operand has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 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) [2023-12-20 12:41:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:41:06,748 INFO L93 Difference]: Finished difference Result 126071 states and 154412 transitions. [2023-12-20 12:41:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-20 12:41:06,748 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 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 101 [2023-12-20 12:41:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:41:06,847 INFO L225 Difference]: With dead ends: 126071 [2023-12-20 12:41:06,847 INFO L226 Difference]: Without dead ends: 97273 [2023-12-20 12:41:06,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2588, Invalid=10984, Unknown=0, NotChecked=0, Total=13572 [2023-12-20 12:41:06,864 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 27305 mSDsluCounter, 18291 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27305 SdHoareTripleChecker+Valid, 19853 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:41:06,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27305 Valid, 19853 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 12:41:06,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97273 states. [2023-12-20 12:41:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97273 to 56768. [2023-12-20 12:41:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56768 states, 56766 states have (on average 1.226438360990734) internal successors, (69620), 56767 states have internal predecessors, (69620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:41:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56768 states to 56768 states and 69620 transitions. [2023-12-20 12:41:13,850 INFO L78 Accepts]: Start accepts. Automaton has 56768 states and 69620 transitions. Word has length 101 [2023-12-20 12:41:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:41:13,851 INFO L495 AbstractCegarLoop]: Abstraction has 56768 states and 69620 transitions. [2023-12-20 12:41:13,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 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) [2023-12-20 12:41:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 56768 states and 69620 transitions. [2023-12-20 12:41:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:41:13,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:41:13,853 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:41:13,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 12:41:14,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:41:14,055 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:41:14,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:41:14,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1377902027, now seen corresponding path program 1 times [2023-12-20 12:41:14,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:41:14,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446008615] [2023-12-20 12:41:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:41:14,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:41:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:41:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:14,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:41:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446008615] [2023-12-20 12:41:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446008615] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:41:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592285563] [2023-12-20 12:41:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:41:14,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:41:14,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:41:14,427 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) [2023-12-20 12:41:14,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 12:41:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:41:14,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:41:14,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:41:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:15,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:41:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 41 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:16,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592285563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:41:16,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:41:16,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2023-12-20 12:41:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294835004] [2023-12-20 12:41:16,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:41:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 12:41:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:41:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 12:41:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 12:41:16,691 INFO L87 Difference]: Start difference. First operand 56768 states and 69620 transitions. Second operand has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 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) [2023-12-20 12:41:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:41:32,914 INFO L93 Difference]: Finished difference Result 136721 states and 166757 transitions. [2023-12-20 12:41:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-20 12:41:32,915 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 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 101 [2023-12-20 12:41:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:41:33,027 INFO L225 Difference]: With dead ends: 136721 [2023-12-20 12:41:33,027 INFO L226 Difference]: Without dead ends: 107707 [2023-12-20 12:41:33,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2317, Invalid=9455, Unknown=0, NotChecked=0, Total=11772 [2023-12-20 12:41:33,062 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 26252 mSDsluCounter, 19293 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26252 SdHoareTripleChecker+Valid, 20859 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:41:33,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26252 Valid, 20859 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 12:41:33,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107707 states. [2023-12-20 12:41:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107707 to 72861. [2023-12-20 12:41:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72861 states, 72859 states have (on average 1.2225257003252858) internal successors, (89072), 72860 states have internal predecessors, (89072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:41:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72861 states to 72861 states and 89072 transitions. [2023-12-20 12:41:42,617 INFO L78 Accepts]: Start accepts. Automaton has 72861 states and 89072 transitions. Word has length 101 [2023-12-20 12:41:42,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:41:42,617 INFO L495 AbstractCegarLoop]: Abstraction has 72861 states and 89072 transitions. [2023-12-20 12:41:42,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 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) [2023-12-20 12:41:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 72861 states and 89072 transitions. [2023-12-20 12:41:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:41:42,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:41:42,624 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:41:42,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 12:41:42,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 12:41:42,829 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:41:42,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:41:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1272668459, now seen corresponding path program 1 times [2023-12-20 12:41:42,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:41:42,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828416135] [2023-12-20 12:41:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:41:42,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:41:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:41:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:43,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:41:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828416135] [2023-12-20 12:41:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828416135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:41:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312001879] [2023-12-20 12:41:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:41:43,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:41:43,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:41:43,599 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:41:43,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 12:41:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:41:43,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:41:43,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:41:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:44,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:41:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 31 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312001879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:41:45,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:41:45,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 15] total 46 [2023-12-20 12:41:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040388385] [2023-12-20 12:41:45,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:41:45,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 12:41:45,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:41:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 12:41:45,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 12:41:45,857 INFO L87 Difference]: Start difference. First operand 72861 states and 89072 transitions. Second operand has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:17,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:42:17,127 INFO L93 Difference]: Finished difference Result 149367 states and 181214 transitions. [2023-12-20 12:42:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-20 12:42:17,127 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 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 [2023-12-20 12:42:17,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:42:17,255 INFO L225 Difference]: With dead ends: 149367 [2023-12-20 12:42:17,255 INFO L226 Difference]: Without dead ends: 110249 [2023-12-20 12:42:17,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20962 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=9769, Invalid=44287, Unknown=0, NotChecked=0, Total=54056 [2023-12-20 12:42:17,288 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 30292 mSDsluCounter, 23378 mSDsCounter, 0 mSdLazyCounter, 3090 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30292 SdHoareTripleChecker+Valid, 24942 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:42:17,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30292 Valid, 24942 Invalid, 3263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 3090 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 12:42:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110249 states. [2023-12-20 12:42:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110249 to 71422. [2023-12-20 12:42:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71422 states, 71420 states have (on average 1.2226267152058248) internal successors, (87320), 71421 states have internal predecessors, (87320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71422 states to 71422 states and 87320 transitions. [2023-12-20 12:42:27,430 INFO L78 Accepts]: Start accepts. Automaton has 71422 states and 87320 transitions. Word has length 101 [2023-12-20 12:42:27,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:42:27,431 INFO L495 AbstractCegarLoop]: Abstraction has 71422 states and 87320 transitions. [2023-12-20 12:42:27,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 71422 states and 87320 transitions. [2023-12-20 12:42:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 12:42:27,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:42:27,432 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:42:27,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-20 12:42:27,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:27,637 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:42:27,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:42:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash -901265796, now seen corresponding path program 1 times [2023-12-20 12:42:27,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:42:27,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232594743] [2023-12-20 12:42:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:27,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:42:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:42:28,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232594743] [2023-12-20 12:42:28,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232594743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:42:28,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225438364] [2023-12-20 12:42:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:28,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:28,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:42:28,953 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:42:28,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 12:42:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:29,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-20 12:42:29,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:42:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:31,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:42:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:38,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225438364] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:42:38,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:42:38,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 86 [2023-12-20 12:42:38,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711473154] [2023-12-20 12:42:38,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:42:38,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-20 12:42:38,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:42:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-20 12:42:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2023-12-20 12:42:38,759 INFO L87 Difference]: Start difference. First operand 71422 states and 87320 transitions. Second operand has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 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) Received shutdown request... [2023-12-20 12:46:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 430 states. [2023-12-20 12:46:42,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108577 ImplicationChecksByTransitivity, 234.4s TimeCoverageRelationStatistics Valid=34634, Invalid=222922, Unknown=0, NotChecked=0, Total=257556 [2023-12-20 12:46:42,473 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 9646 mSDsluCounter, 9312 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9646 SdHoareTripleChecker+Valid, 9687 SdHoareTripleChecker+Invalid, 7118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:42,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9646 Valid, 9687 Invalid, 7118 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 6697 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-20 12:46:42,474 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 12:46:42,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-20 12:46:42,494 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:46:42,495 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:46:42,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:42,675 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (71422states) and FLOYD_HOARE automaton (currently 430 states, 86 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 508 known predicates. [2023-12-20 12:46:42,676 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 12:46:42,679 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:46:42,696 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 12:46:42,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:46:42 BoogieIcfgContainer [2023-12-20 12:46:42,697 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 12:46:42,697 INFO L158 Benchmark]: Toolchain (without parser) took 833649.95ms. Allocated memory was 244.3MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 186.8MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-20 12:46:42,698 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 12:46:42,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1301.23ms. Allocated memory is still 244.3MB. Free memory was 186.8MB in the beginning and 159.0MB in the end (delta: 27.8MB). Peak memory consumption was 93.2MB. Max. memory is 8.0GB. [2023-12-20 12:46:42,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 275.81ms. Allocated memory is still 244.3MB. Free memory was 159.0MB in the beginning and 141.3MB in the end (delta: 17.7MB). Peak memory consumption was 98.4MB. Max. memory is 8.0GB. [2023-12-20 12:46:42,698 INFO L158 Benchmark]: Boogie Preprocessor took 440.10ms. Allocated memory was 244.3MB in the beginning and 382.7MB in the end (delta: 138.4MB). Free memory was 141.3MB in the beginning and 234.7MB in the end (delta: -93.3MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. [2023-12-20 12:46:42,698 INFO L158 Benchmark]: RCFGBuilder took 3109.85ms. Allocated memory was 382.7MB in the beginning and 718.3MB in the end (delta: 335.5MB). Free memory was 234.7MB in the beginning and 333.5MB in the end (delta: -98.8MB). Peak memory consumption was 238.3MB. Max. memory is 8.0GB. [2023-12-20 12:46:42,698 INFO L158 Benchmark]: TraceAbstraction took 828516.82ms. Allocated memory was 718.3MB in the beginning and 3.4GB in the end (delta: 2.7GB). Free memory was 333.0MB in the beginning and 2.1GB in the end (delta: -1.8GB). Peak memory consumption was 893.5MB. Max. memory is 8.0GB. [2023-12-20 12:46:42,699 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1301.23ms. Allocated memory is still 244.3MB. Free memory was 186.8MB in the beginning and 159.0MB in the end (delta: 27.8MB). Peak memory consumption was 93.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 275.81ms. Allocated memory is still 244.3MB. Free memory was 159.0MB in the beginning and 141.3MB in the end (delta: 17.7MB). Peak memory consumption was 98.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 440.10ms. Allocated memory was 244.3MB in the beginning and 382.7MB in the end (delta: 138.4MB). Free memory was 141.3MB in the beginning and 234.7MB in the end (delta: -93.3MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. * RCFGBuilder took 3109.85ms. Allocated memory was 382.7MB in the beginning and 718.3MB in the end (delta: 335.5MB). Free memory was 234.7MB in the beginning and 333.5MB in the end (delta: -98.8MB). Peak memory consumption was 238.3MB. Max. memory is 8.0GB. * TraceAbstraction took 828516.82ms. Allocated memory was 718.3MB in the beginning and 3.4GB in the end (delta: 2.7GB). Free memory was 333.0MB in the beginning and 2.1GB in the end (delta: -1.8GB). Peak memory consumption was 893.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 295]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 295). Cancelled while NwaCegarLoop was constructing difference of abstraction (71422states) and FLOYD_HOARE automaton (currently 430 states, 86 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 508 known predicates. - TimeoutResultAtElement [Line: 358]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 358). Cancelled while NwaCegarLoop was constructing difference of abstraction (71422states) and FLOYD_HOARE automaton (currently 430 states, 86 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 508 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 809 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 828.5s, OverallIterations: 37, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 691.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 409467 SdHoareTripleChecker+Valid, 46.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 409467 mSDsluCounter, 433603 SdHoareTripleChecker+Invalid, 40.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 381019 mSDsCounter, 5627 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55967 IncrementalHoareTripleChecker+Invalid, 61594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5627 mSolverCounterUnsat, 52584 mSDtfsCounter, 55967 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6260 GetRequests, 2608 SyntacticMatches, 10 SemanticMatches, 3641 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452555 ImplicationChecksByTransitivity, 594.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72861occurred in iteration=35, InterpolantAutomatonStates: 2517, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 48.1s AutomataMinimizationTime, 36 MinimizatonAttempts, 185880 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 81.9s InterpolantComputationTime, 3959 NumberOfCodeBlocks, 3959 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 5431 ConstructedInterpolants, 0 QuantifiedInterpolants, 129941 SizeOfPredicates, 165 NumberOfNonLiveVariables, 6793 ConjunctsInSsa, 534 ConjunctsInUnsatCore, 73 InterpolantComputations, 19 PerfectInterpolantSequences, 1242/3453 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown