/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 20:01:00,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 20:01:00,958 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 20:01:00,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 20:01:00,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 20:01:00,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 20:01:00,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 20:01:00,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 20:01:00,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 20:01:00,997 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 20:01:00,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 20:01:00,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 20:01:00,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 20:01:00,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 20:01:00,999 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 20:01:00,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 20:01:01,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 20:01:01,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 20:01:01,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 20:01:01,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 20:01:01,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 20:01:01,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 20:01:01,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 20:01:01,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 20:01:01,008 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 20:01:01,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 20:01:01,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 20:01:01,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 20:01:01,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 20:01:01,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:01:01,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 20:01:01,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 20:01:01,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 20:01:01,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 20:01:01,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 20:01:01,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 20:01:01,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 20:01:01,011 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 20:01:01,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 20:01:01,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 20:01:01,011 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 20:01:01,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 20:01:01,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 20:01:01,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 20:01:01,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 20:01:01,312 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 20:01:01,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-12-16 20:01:02,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 20:01:03,018 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 20:01:03,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-12-16 20:01:03,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355f97aa7/70495653c78748c5a8b7299e80ed8b15/FLAGd925c1901 [2023-12-16 20:01:03,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355f97aa7/70495653c78748c5a8b7299e80ed8b15 [2023-12-16 20:01:03,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 20:01:03,045 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 20:01:03,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 20:01:03,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 20:01:03,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 20:01:03,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22852d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03, skipping insertion in model container [2023-12-16 20:01:03,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 20:01:03,338 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1258,1271] [2023-12-16 20:01:03,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:01:03,551 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 20:01:03,559 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1258,1271] [2023-12-16 20:01:03,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:01:03,637 INFO L206 MainTranslator]: Completed translation [2023-12-16 20:01:03,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03 WrapperNode [2023-12-16 20:01:03,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 20:01:03,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 20:01:03,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 20:01:03,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 20:01:03,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,817 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1644 [2023-12-16 20:01:03,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 20:01:03,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 20:01:03,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 20:01:03,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 20:01:03,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,871 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,933 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 20:01:03,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,966 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:03,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:04,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 20:01:04,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 20:01:04,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 20:01:04,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 20:01:04,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (1/1) ... [2023-12-16 20:01:04,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:01:04,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:04,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 20:01:04,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 20:01:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 20:01:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 20:01:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 20:01:04,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 20:01:04,329 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 20:01:04,331 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 20:01:05,441 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 20:01:05,498 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 20:01:05,499 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 20:01:05,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:01:05 BoogieIcfgContainer [2023-12-16 20:01:05,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 20:01:05,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 20:01:05,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 20:01:05,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 20:01:05,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:01:03" (1/3) ... [2023-12-16 20:01:05,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c24b60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:01:05, skipping insertion in model container [2023-12-16 20:01:05,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:03" (2/3) ... [2023-12-16 20:01:05,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c24b60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:01:05, skipping insertion in model container [2023-12-16 20:01:05,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:01:05" (3/3) ... [2023-12-16 20:01:05,509 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-12-16 20:01:05,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 20:01:05,524 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 20:01:05,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 20:01:05,586 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;@72a7e838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 20:01:05,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 20:01:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 258 states have (on average 1.6666666666666667) internal successors, (430), 259 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-16 20:01:05,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:05,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:05,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:05,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1623680595, now seen corresponding path program 1 times [2023-12-16 20:01:05,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312050572] [2023-12-16 20:01:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:05,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312050572] [2023-12-16 20:01:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312050572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:06,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:06,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:06,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718573315] [2023-12-16 20:01:06,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:06,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:01:06,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:01:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:01:06,362 INFO L87 Difference]: Start difference. First operand has 260 states, 258 states have (on average 1.6666666666666667) internal successors, (430), 259 states have internal predecessors, (430), 0 states have call successors, (0), 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 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:06,464 INFO L93 Difference]: Finished difference Result 426 states and 706 transitions. [2023-12-16 20:01:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:01:06,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-16 20:01:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:06,485 INFO L225 Difference]: With dead ends: 426 [2023-12-16 20:01:06,485 INFO L226 Difference]: Without dead ends: 260 [2023-12-16 20:01:06,490 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 [2023-12-16 20:01:06,494 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:06,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1264 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-16 20:01:06,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-12-16 20:01:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.6525096525096525) internal successors, (428), 259 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 428 transitions. [2023-12-16 20:01:06,545 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 428 transitions. Word has length 84 [2023-12-16 20:01:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:06,546 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 428 transitions. [2023-12-16 20:01:06,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 428 transitions. [2023-12-16 20:01:06,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 20:01:06,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:06,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:06,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 20:01:06,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:06,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:06,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1207234535, now seen corresponding path program 1 times [2023-12-16 20:01:06,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:06,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196792815] [2023-12-16 20:01:06,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:06,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:06,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196792815] [2023-12-16 20:01:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196792815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:06,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162582039] [2023-12-16 20:01:06,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:06,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:01:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:06,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:01:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:01:06,813 INFO L87 Difference]: Start difference. First operand 260 states and 428 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:06,837 INFO L93 Difference]: Finished difference Result 429 states and 704 transitions. [2023-12-16 20:01:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:01:06,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-16 20:01:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:06,840 INFO L225 Difference]: With dead ends: 429 [2023-12-16 20:01:06,840 INFO L226 Difference]: Without dead ends: 263 [2023-12-16 20:01:06,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:01:06,843 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:06,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1262 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-16 20:01:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2023-12-16 20:01:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.6475095785440612) internal successors, (430), 261 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 430 transitions. [2023-12-16 20:01:06,852 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 430 transitions. Word has length 85 [2023-12-16 20:01:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:06,852 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 430 transitions. [2023-12-16 20:01:06,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 430 transitions. [2023-12-16 20:01:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 20:01:06,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:06,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 20:01:06,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:06,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1440867065, now seen corresponding path program 1 times [2023-12-16 20:01:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456991944] [2023-12-16 20:01:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456991944] [2023-12-16 20:01:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456991944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:07,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:07,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 20:01:07,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170382717] [2023-12-16 20:01:07,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:07,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:01:07,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:07,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:01:07,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:07,494 INFO L87 Difference]: Start difference. First operand 262 states and 430 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:07,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:07,805 INFO L93 Difference]: Finished difference Result 771 states and 1259 transitions. [2023-12-16 20:01:07,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 20:01:07,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 20:01:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:07,809 INFO L225 Difference]: With dead ends: 771 [2023-12-16 20:01:07,809 INFO L226 Difference]: Without dead ends: 603 [2023-12-16 20:01:07,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-12-16 20:01:07,815 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2661 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:07,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 2534 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-12-16 20:01:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 283. [2023-12-16 20:01:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.6382978723404256) internal successors, (462), 282 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 462 transitions. [2023-12-16 20:01:07,837 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 462 transitions. Word has length 86 [2023-12-16 20:01:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:07,837 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 462 transitions. [2023-12-16 20:01:07,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 462 transitions. [2023-12-16 20:01:07,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 20:01:07,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:07,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:07,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 20:01:07,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:07,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:07,842 INFO L85 PathProgramCache]: Analyzing trace with hash -117298803, now seen corresponding path program 1 times [2023-12-16 20:01:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055485155] [2023-12-16 20:01:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:08,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:08,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055485155] [2023-12-16 20:01:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055485155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:08,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 20:01:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641159049] [2023-12-16 20:01:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:01:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:01:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:08,113 INFO L87 Difference]: Start difference. First operand 283 states and 462 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:08,360 INFO L93 Difference]: Finished difference Result 781 states and 1275 transitions. [2023-12-16 20:01:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 20:01:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-16 20:01:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:08,365 INFO L225 Difference]: With dead ends: 781 [2023-12-16 20:01:08,365 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 20:01:08,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-12-16 20:01:08,370 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 2696 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:08,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2696 Valid, 2549 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 20:01:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 288. [2023-12-16 20:01:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.6341463414634145) internal successors, (469), 287 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 469 transitions. [2023-12-16 20:01:08,378 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 469 transitions. Word has length 87 [2023-12-16 20:01:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:08,379 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 469 transitions. [2023-12-16 20:01:08,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 469 transitions. [2023-12-16 20:01:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-16 20:01:08,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:08,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:08,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 20:01:08,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:08,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1777488031, now seen corresponding path program 1 times [2023-12-16 20:01:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:08,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988754110] [2023-12-16 20:01:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:08,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:08,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988754110] [2023-12-16 20:01:08,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988754110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:08,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:08,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:01:08,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903905150] [2023-12-16 20:01:08,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:08,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:01:08,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:08,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:01:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:08,599 INFO L87 Difference]: Start difference. First operand 288 states and 469 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:08,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:08,779 INFO L93 Difference]: Finished difference Result 787 states and 1276 transitions. [2023-12-16 20:01:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:01:08,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-16 20:01:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:08,782 INFO L225 Difference]: With dead ends: 787 [2023-12-16 20:01:08,782 INFO L226 Difference]: Without dead ends: 608 [2023-12-16 20:01:08,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:01:08,783 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2176 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:08,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 2102 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-12-16 20:01:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 290. [2023-12-16 20:01:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.6262975778546713) internal successors, (470), 289 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 470 transitions. [2023-12-16 20:01:08,789 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 470 transitions. Word has length 88 [2023-12-16 20:01:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:08,789 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 470 transitions. [2023-12-16 20:01:08,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 470 transitions. [2023-12-16 20:01:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-16 20:01:08,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:08,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:08,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 20:01:08,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:08,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash -575936655, now seen corresponding path program 1 times [2023-12-16 20:01:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987697087] [2023-12-16 20:01:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:09,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:09,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987697087] [2023-12-16 20:01:09,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987697087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:09,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:09,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:01:09,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165328886] [2023-12-16 20:01:09,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:09,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:01:09,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:01:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:09,015 INFO L87 Difference]: Start difference. First operand 290 states and 470 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 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) [2023-12-16 20:01:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:09,198 INFO L93 Difference]: Finished difference Result 790 states and 1275 transitions. [2023-12-16 20:01:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:01:09,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 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 [2023-12-16 20:01:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:09,200 INFO L225 Difference]: With dead ends: 790 [2023-12-16 20:01:09,200 INFO L226 Difference]: Without dead ends: 606 [2023-12-16 20:01:09,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:01:09,201 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2163 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:09,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 2099 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-16 20:01:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 292. [2023-12-16 20:01:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.6185567010309279) internal successors, (471), 291 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 471 transitions. [2023-12-16 20:01:09,208 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 471 transitions. Word has length 89 [2023-12-16 20:01:09,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:09,208 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 471 transitions. [2023-12-16 20:01:09,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 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) [2023-12-16 20:01:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 471 transitions. [2023-12-16 20:01:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-16 20:01:09,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:09,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:09,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 20:01:09,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:09,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash 261394425, now seen corresponding path program 1 times [2023-12-16 20:01:09,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:09,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378657911] [2023-12-16 20:01:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:09,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:09,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:09,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378657911] [2023-12-16 20:01:09,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378657911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:09,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:09,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:01:09,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567384235] [2023-12-16 20:01:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:09,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:01:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:09,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:01:09,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:09,409 INFO L87 Difference]: Start difference. First operand 292 states and 471 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 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) [2023-12-16 20:01:09,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:09,564 INFO L93 Difference]: Finished difference Result 793 states and 1274 transitions. [2023-12-16 20:01:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:01:09,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 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 [2023-12-16 20:01:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:09,567 INFO L225 Difference]: With dead ends: 793 [2023-12-16 20:01:09,567 INFO L226 Difference]: Without dead ends: 604 [2023-12-16 20:01:09,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:01:09,567 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 2150 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:09,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 2080 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-12-16 20:01:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 294. [2023-12-16 20:01:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.6109215017064846) internal successors, (472), 293 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 472 transitions. [2023-12-16 20:01:09,574 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 472 transitions. Word has length 90 [2023-12-16 20:01:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:09,574 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 472 transitions. [2023-12-16 20:01:09,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 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) [2023-12-16 20:01:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 472 transitions. [2023-12-16 20:01:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 20:01:09,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:09,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:09,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 20:01:09,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:09,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:09,575 INFO L85 PathProgramCache]: Analyzing trace with hash -806927081, now seen corresponding path program 1 times [2023-12-16 20:01:09,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:09,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161440451] [2023-12-16 20:01:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:09,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:09,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:09,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161440451] [2023-12-16 20:01:09,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161440451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:09,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:09,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:01:09,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236975370] [2023-12-16 20:01:09,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:09,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:01:09,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:09,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:01:09,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:09,730 INFO L87 Difference]: Start difference. First operand 294 states and 472 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:09,893 INFO L93 Difference]: Finished difference Result 796 states and 1273 transitions. [2023-12-16 20:01:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:01:09,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-16 20:01:09,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:09,896 INFO L225 Difference]: With dead ends: 796 [2023-12-16 20:01:09,896 INFO L226 Difference]: Without dead ends: 602 [2023-12-16 20:01:09,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:01:09,898 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2137 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:09,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 2069 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-12-16 20:01:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 296. [2023-12-16 20:01:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.6033898305084746) internal successors, (473), 295 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 473 transitions. [2023-12-16 20:01:09,905 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 473 transitions. Word has length 91 [2023-12-16 20:01:09,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:09,905 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 473 transitions. [2023-12-16 20:01:09,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 473 transitions. [2023-12-16 20:01:09,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 20:01:09,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:09,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:09,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 20:01:09,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:09,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1378034349, now seen corresponding path program 1 times [2023-12-16 20:01:09,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:09,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100687847] [2023-12-16 20:01:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:10,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:10,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100687847] [2023-12-16 20:01:10,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100687847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:10,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:10,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:10,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867044645] [2023-12-16 20:01:10,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:10,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:10,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:10,067 INFO L87 Difference]: Start difference. First operand 296 states and 473 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:10,154 INFO L93 Difference]: Finished difference Result 616 states and 989 transitions. [2023-12-16 20:01:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:01:10,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-16 20:01:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:10,156 INFO L225 Difference]: With dead ends: 616 [2023-12-16 20:01:10,156 INFO L226 Difference]: Without dead ends: 421 [2023-12-16 20:01:10,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:10,158 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1101 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:10,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1242 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-16 20:01:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 280. [2023-12-16 20:01:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6129032258064515) internal successors, (450), 279 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 450 transitions. [2023-12-16 20:01:10,168 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 450 transitions. Word has length 92 [2023-12-16 20:01:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:10,168 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 450 transitions. [2023-12-16 20:01:10,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 450 transitions. [2023-12-16 20:01:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-16 20:01:10,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:10,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:10,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 20:01:10,170 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:10,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1264062484, now seen corresponding path program 1 times [2023-12-16 20:01:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:10,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187536644] [2023-12-16 20:01:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:10,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187536644] [2023-12-16 20:01:10,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187536644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275831258] [2023-12-16 20:01:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:10,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:10,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:10,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:01:10,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 20:01:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:11,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 20:01:11,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:11,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:01:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275831258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:11,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:01:11,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-16 20:01:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738327327] [2023-12-16 20:01:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:11,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:01:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:01:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:11,561 INFO L87 Difference]: Start difference. First operand 280 states and 450 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:11,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:11,781 INFO L93 Difference]: Finished difference Result 448 states and 724 transitions. [2023-12-16 20:01:11,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:01:11,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2023-12-16 20:01:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:11,783 INFO L225 Difference]: With dead ends: 448 [2023-12-16 20:01:11,783 INFO L226 Difference]: Without dead ends: 280 [2023-12-16 20:01:11,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:11,784 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 306 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:11,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 511 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:01:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-16 20:01:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-12-16 20:01:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6057347670250897) internal successors, (448), 279 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 448 transitions. [2023-12-16 20:01:11,789 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 448 transitions. Word has length 196 [2023-12-16 20:01:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:11,789 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 448 transitions. [2023-12-16 20:01:11,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 448 transitions. [2023-12-16 20:01:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-16 20:01:11,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:11,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:11,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 20:01:12,002 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,SelfDestructingSolverStorable9 [2023-12-16 20:01:12,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:12,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash -50597174, now seen corresponding path program 1 times [2023-12-16 20:01:12,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:12,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618061060] [2023-12-16 20:01:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:12,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:12,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618061060] [2023-12-16 20:01:12,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618061060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:12,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:12,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:12,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941321090] [2023-12-16 20:01:12,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:12,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:01:12,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:01:12,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:01:12,861 INFO L87 Difference]: Start difference. First operand 280 states and 448 transitions. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:13,147 INFO L93 Difference]: Finished difference Result 592 states and 953 transitions. [2023-12-16 20:01:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:13,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-12-16 20:01:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:13,149 INFO L225 Difference]: With dead ends: 592 [2023-12-16 20:01:13,149 INFO L226 Difference]: Without dead ends: 417 [2023-12-16 20:01:13,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 20:01:13,150 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 819 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:13,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1473 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:01:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-16 20:01:13,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 331. [2023-12-16 20:01:13,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.603030303030303) internal successors, (529), 330 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 529 transitions. [2023-12-16 20:01:13,162 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 529 transitions. Word has length 197 [2023-12-16 20:01:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:13,163 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 529 transitions. [2023-12-16 20:01:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 529 transitions. [2023-12-16 20:01:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-16 20:01:13,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:13,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:13,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 20:01:13,165 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:13,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1621303522, now seen corresponding path program 1 times [2023-12-16 20:01:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630463606] [2023-12-16 20:01:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:14,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:14,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630463606] [2023-12-16 20:01:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630463606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:14,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:14,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:14,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482419123] [2023-12-16 20:01:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:14,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:14,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:14,521 INFO L87 Difference]: Start difference. First operand 331 states and 529 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:14,893 INFO L93 Difference]: Finished difference Result 585 states and 942 transitions. [2023-12-16 20:01:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:01:14,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-16 20:01:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:14,895 INFO L225 Difference]: With dead ends: 585 [2023-12-16 20:01:14,895 INFO L226 Difference]: Without dead ends: 417 [2023-12-16 20:01:14,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:14,896 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 793 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:14,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 747 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 20:01:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-16 20:01:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2023-12-16 20:01:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.6012084592145015) internal successors, (530), 331 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 530 transitions. [2023-12-16 20:01:14,902 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 530 transitions. Word has length 198 [2023-12-16 20:01:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:14,902 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 530 transitions. [2023-12-16 20:01:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 530 transitions. [2023-12-16 20:01:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-16 20:01:14,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:14,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:14,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 20:01:14,904 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:14,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash -54545572, now seen corresponding path program 1 times [2023-12-16 20:01:14,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:14,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017395298] [2023-12-16 20:01:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:14,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:15,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:15,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017395298] [2023-12-16 20:01:15,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017395298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:15,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:15,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291567955] [2023-12-16 20:01:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:01:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:01:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:01:15,736 INFO L87 Difference]: Start difference. First operand 332 states and 530 transitions. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:16,105 INFO L93 Difference]: Finished difference Result 646 states and 1027 transitions. [2023-12-16 20:01:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:01:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-16 20:01:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:16,107 INFO L225 Difference]: With dead ends: 646 [2023-12-16 20:01:16,107 INFO L226 Difference]: Without dead ends: 478 [2023-12-16 20:01:16,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:01:16,108 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 809 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:16,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1418 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 20:01:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-16 20:01:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 415. [2023-12-16 20:01:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.606280193236715) internal successors, (665), 414 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 665 transitions. [2023-12-16 20:01:16,115 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 665 transitions. Word has length 198 [2023-12-16 20:01:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:16,116 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 665 transitions. [2023-12-16 20:01:16,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:16,116 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 665 transitions. [2023-12-16 20:01:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-16 20:01:16,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:16,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:16,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 20:01:16,117 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:16,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash 107226576, now seen corresponding path program 1 times [2023-12-16 20:01:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:16,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983074547] [2023-12-16 20:01:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:16,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:17,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:17,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983074547] [2023-12-16 20:01:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983074547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:17,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121641164] [2023-12-16 20:01:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:17,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:17,025 INFO L87 Difference]: Start difference. First operand 415 states and 665 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:17,379 INFO L93 Difference]: Finished difference Result 585 states and 940 transitions. [2023-12-16 20:01:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:01:17,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2023-12-16 20:01:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:17,381 INFO L225 Difference]: With dead ends: 585 [2023-12-16 20:01:17,381 INFO L226 Difference]: Without dead ends: 417 [2023-12-16 20:01:17,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:17,382 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 731 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:17,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 740 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 20:01:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-16 20:01:17,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2023-12-16 20:01:17,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.6048192771084338) internal successors, (666), 415 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 666 transitions. [2023-12-16 20:01:17,390 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 666 transitions. Word has length 199 [2023-12-16 20:01:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:17,390 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 666 transitions. [2023-12-16 20:01:17,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 666 transitions. [2023-12-16 20:01:17,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-16 20:01:17,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:17,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:17,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 20:01:17,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:17,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:17,393 INFO L85 PathProgramCache]: Analyzing trace with hash 247775186, now seen corresponding path program 1 times [2023-12-16 20:01:17,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:17,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908719575] [2023-12-16 20:01:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:17,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:19,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:19,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908719575] [2023-12-16 20:01:19,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908719575] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:19,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854687782] [2023-12-16 20:01:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:19,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:19,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:19,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:01:19,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 20:01:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:20,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-16 20:01:20,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:20,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:01:20,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854687782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:20,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:01:20,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2023-12-16 20:01:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49124448] [2023-12-16 20:01:20,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:20,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 20:01:20,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:20,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 20:01:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-12-16 20:01:20,934 INFO L87 Difference]: Start difference. First operand 416 states and 666 transitions. Second operand has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:21,671 INFO L93 Difference]: Finished difference Result 902 states and 1436 transitions. [2023-12-16 20:01:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 20:01:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2023-12-16 20:01:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:21,673 INFO L225 Difference]: With dead ends: 902 [2023-12-16 20:01:21,674 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 20:01:21,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-12-16 20:01:21,674 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1545 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:21,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1819 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 20:01:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 20:01:21,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 416. [2023-12-16 20:01:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.6) internal successors, (664), 415 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 664 transitions. [2023-12-16 20:01:21,684 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 664 transitions. Word has length 199 [2023-12-16 20:01:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:21,684 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 664 transitions. [2023-12-16 20:01:21,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 664 transitions. [2023-12-16 20:01:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-16 20:01:21,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:21,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:21,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 20:01:21,894 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,SelfDestructingSolverStorable14 [2023-12-16 20:01:21,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:21,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash -324453882, now seen corresponding path program 1 times [2023-12-16 20:01:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263938002] [2023-12-16 20:01:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263938002] [2023-12-16 20:01:24,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263938002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:24,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:24,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 20:01:24,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329950732] [2023-12-16 20:01:24,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:24,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 20:01:24,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 20:01:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-16 20:01:24,803 INFO L87 Difference]: Start difference. First operand 416 states and 664 transitions. Second operand has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:25,267 INFO L93 Difference]: Finished difference Result 1228 states and 1966 transitions. [2023-12-16 20:01:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 20:01:25,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-16 20:01:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:25,272 INFO L225 Difference]: With dead ends: 1228 [2023-12-16 20:01:25,272 INFO L226 Difference]: Without dead ends: 997 [2023-12-16 20:01:25,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-12-16 20:01:25,273 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1676 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:25,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 3149 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 20:01:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-16 20:01:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 605. [2023-12-16 20:01:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.5728476821192052) internal successors, (950), 604 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 950 transitions. [2023-12-16 20:01:25,290 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 950 transitions. Word has length 200 [2023-12-16 20:01:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:25,290 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 950 transitions. [2023-12-16 20:01:25,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:25,291 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 950 transitions. [2023-12-16 20:01:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-16 20:01:25,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:25,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:25,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 20:01:25,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:25,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2107320392, now seen corresponding path program 1 times [2023-12-16 20:01:25,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:25,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347899211] [2023-12-16 20:01:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:25,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:25,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:25,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347899211] [2023-12-16 20:01:25,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347899211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:25,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:25,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 20:01:25,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190347126] [2023-12-16 20:01:25,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:25,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:01:25,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:25,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:01:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:01:25,753 INFO L87 Difference]: Start difference. First operand 605 states and 950 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:25,769 INFO L93 Difference]: Finished difference Result 934 states and 1481 transitions. [2023-12-16 20:01:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:01:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2023-12-16 20:01:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:25,772 INFO L225 Difference]: With dead ends: 934 [2023-12-16 20:01:25,772 INFO L226 Difference]: Without dead ends: 601 [2023-12-16 20:01:25,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:25,773 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 554 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:25,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 829 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-12-16 20:01:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2023-12-16 20:01:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.5666666666666667) internal successors, (940), 600 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 940 transitions. [2023-12-16 20:01:25,784 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 940 transitions. Word has length 201 [2023-12-16 20:01:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:25,785 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 940 transitions. [2023-12-16 20:01:25,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 940 transitions. [2023-12-16 20:01:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-16 20:01:25,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:25,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:25,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 20:01:25,787 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:25,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:25,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1785007650, now seen corresponding path program 1 times [2023-12-16 20:01:25,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119027216] [2023-12-16 20:01:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:28,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:28,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119027216] [2023-12-16 20:01:28,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119027216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:28,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100945384] [2023-12-16 20:01:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:28,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:28,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:28,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:01:29,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 20:01:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:29,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-16 20:01:29,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:30,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 20:01:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100945384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 20:01:32,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 20:01:32,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 20] total 56 [2023-12-16 20:01:32,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568080406] [2023-12-16 20:01:32,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 20:01:32,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-16 20:01:32,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:32,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-16 20:01:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2023-12-16 20:01:32,570 INFO L87 Difference]: Start difference. First operand 601 states and 940 transitions. Second operand has 57 states, 57 states have (on average 10.368421052631579) internal successors, (591), 56 states have internal predecessors, (591), 0 states have call successors, (0), 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... [2023-12-16 20:01:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2023-12-16 20:01:53,300 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 20:01:53,300 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 20:01:53,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31140 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=14033, Invalid=64647, Unknown=0, NotChecked=0, Total=78680 [2023-12-16 20:01:53,316 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 14372 mSDsluCounter, 7327 mSDsCounter, 0 mSdLazyCounter, 6229 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14372 SdHoareTripleChecker+Valid, 7560 SdHoareTripleChecker+Invalid, 6320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 6229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:53,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14372 Valid, 7560 Invalid, 6320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 6229 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 20:01:53,318 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 20:01:53,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 20:01:53,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 20:01:53,529 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (601states) and FLOYD_HOARE automaton (currently 227 states, 57 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-22-1 term,while SimplifyDDA2 was simplifying 22 xjuncts wrt. a ATOM-1 context. [2023-12-16 20:01:53,533 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:53,536 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 20:01:53,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 08:01:53 BoogieIcfgContainer [2023-12-16 20:01:53,540 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 20:01:53,541 INFO L158 Benchmark]: Toolchain (without parser) took 50495.22ms. Allocated memory was 277.9MB in the beginning and 1.1GB in the end (delta: 860.9MB). Free memory was 227.3MB in the beginning and 908.5MB in the end (delta: -681.2MB). Peak memory consumption was 180.7MB. Max. memory is 8.0GB. [2023-12-16 20:01:53,541 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 20:01:53,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 591.88ms. Allocated memory is still 277.9MB. Free memory was 227.1MB in the beginning and 194.7MB in the end (delta: 32.4MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-16 20:01:53,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 178.92ms. Allocated memory is still 277.9MB. Free memory was 194.7MB in the beginning and 232.2MB in the end (delta: -37.5MB). Peak memory consumption was 49.4MB. Max. memory is 8.0GB. [2023-12-16 20:01:53,541 INFO L158 Benchmark]: Boogie Preprocessor took 199.73ms. Allocated memory is still 277.9MB. Free memory was 232.2MB in the beginning and 214.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 20:01:53,542 INFO L158 Benchmark]: RCFGBuilder took 1482.35ms. Allocated memory is still 277.9MB. Free memory was 214.4MB in the beginning and 148.2MB in the end (delta: 66.2MB). Peak memory consumption was 71.5MB. Max. memory is 8.0GB. [2023-12-16 20:01:53,542 INFO L158 Benchmark]: TraceAbstraction took 48037.48ms. Allocated memory was 277.9MB in the beginning and 1.1GB in the end (delta: 860.9MB). Free memory was 147.1MB in the beginning and 908.5MB in the end (delta: -761.4MB). Peak memory consumption was 99.7MB. Max. memory is 8.0GB. [2023-12-16 20:01:53,548 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 591.88ms. Allocated memory is still 277.9MB. Free memory was 227.1MB in the beginning and 194.7MB in the end (delta: 32.4MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 178.92ms. Allocated memory is still 277.9MB. Free memory was 194.7MB in the beginning and 232.2MB in the end (delta: -37.5MB). Peak memory consumption was 49.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 199.73ms. Allocated memory is still 277.9MB. Free memory was 232.2MB in the beginning and 214.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * RCFGBuilder took 1482.35ms. Allocated memory is still 277.9MB. Free memory was 214.4MB in the beginning and 148.2MB in the end (delta: 66.2MB). Peak memory consumption was 71.5MB. Max. memory is 8.0GB. * TraceAbstraction took 48037.48ms. Allocated memory was 277.9MB in the beginning and 1.1GB in the end (delta: 860.9MB). Free memory was 147.1MB in the beginning and 908.5MB in the end (delta: -761.4MB). Peak memory consumption was 99.7MB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (601states) and FLOYD_HOARE automaton (currently 227 states, 57 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-22-1 term,while SimplifyDDA2 was simplifying 22 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 260 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.0s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36691 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36691 mSDsluCounter, 35447 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28544 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10333 IncrementalHoareTripleChecker+Invalid, 10446 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 6903 mSDtfsCounter, 10333 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1217 GetRequests, 775 SyntacticMatches, 1 SemanticMatches, 440 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31414 ImplicationChecksByTransitivity, 19.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=605occurred in iteration=16, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 2863 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 3177 NumberOfCodeBlocks, 3177 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 3356 ConstructedInterpolants, 0 QuantifiedInterpolants, 21583 SizeOfPredicates, 49 NumberOfNonLiveVariables, 4892 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 22 InterpolantComputations, 17 PerfectInterpolantSequences, 180/260 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