/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:30:32,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:30:32,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:30:32,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:30:32,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:30:32,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:30:32,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:30:32,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:30:32,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:30:32,771 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:30:32,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:30:32,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:30:32,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:30:32,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:30:32,773 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:30:32,773 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:30:32,773 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:30:32,773 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:30:32,774 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:30:32,774 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:30:32,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:30:32,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:30:32,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:30:32,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:30:32,775 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:30:32,775 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:30:32,775 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:30:32,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:30:32,776 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:30:32,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:30:32,776 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:30:32,776 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:30:32,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:30:32,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:30:32,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:30:32,777 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:30:32,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:30:32,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:30:32,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:30:32,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:30:32,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:30:32,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:30:32,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:30:32,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:30:32,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:30:32,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:30:32,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:30:32,934 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:30:32,934 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:30:32,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:30:34,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:30:34,200 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:30:34,200 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:30:34,207 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a779eaf/9330ca92cc7446b8b47cec95c52589eb/FLAGb8a9184d8 [2023-12-20 03:30:34,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a779eaf/9330ca92cc7446b8b47cec95c52589eb [2023-12-20 03:30:34,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:30:34,219 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:30:34,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:30:34,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:30:34,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:30:34,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1c519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34, skipping insertion in model container [2023-12-20 03:30:34,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:30:34,365 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5805,5818] [2023-12-20 03:30:34,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:30:34,398 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:30:34,423 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5805,5818] [2023-12-20 03:30:34,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:30:34,445 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:30:34,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34 WrapperNode [2023-12-20 03:30:34,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:30:34,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:30:34,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:30:34,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:30:34,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,478 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 446 [2023-12-20 03:30:34,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:30:34,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:30:34,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:30:34,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:30:34,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,513 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 03:30:34,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:30:34,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:30:34,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:30:34,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:30:34,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (1/1) ... [2023-12-20 03:30:34,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:30:34,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:30:34,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 03:30:34,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 03:30:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:30:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:30:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:30:34,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:30:34,716 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:30:34,717 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:30:35,013 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:30:35,053 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:30:35,056 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:30:35,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:30:35 BoogieIcfgContainer [2023-12-20 03:30:35,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:30:35,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:30:35,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:30:35,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:30:35,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:30:34" (1/3) ... [2023-12-20 03:30:35,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd6074a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:30:35, skipping insertion in model container [2023-12-20 03:30:35,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:30:34" (2/3) ... [2023-12-20 03:30:35,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd6074a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:30:35, skipping insertion in model container [2023-12-20 03:30:35,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:30:35" (3/3) ... [2023-12-20 03:30:35,067 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:30:35,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:30:35,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:30:35,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:30:35,131 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;@572ef7c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:30:35,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:30:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 03:30:35,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:35,143 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] [2023-12-20 03:30:35,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:35,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1781186373, now seen corresponding path program 1 times [2023-12-20 03:30:35,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646995579] [2023-12-20 03:30:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:35,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646995579] [2023-12-20 03:30:35,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646995579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:35,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:30:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878290342] [2023-12-20 03:30:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:35,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:30:35,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:30:35,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:35,560 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:35,623 INFO L93 Difference]: Finished difference Result 217 states and 352 transitions. [2023-12-20 03:30:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:30:35,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 03:30:35,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:35,634 INFO L225 Difference]: With dead ends: 217 [2023-12-20 03:30:35,634 INFO L226 Difference]: Without dead ends: 149 [2023-12-20 03:30:35,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:35,639 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 107 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:35,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 329 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-20 03:30:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2023-12-20 03:30:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2023-12-20 03:30:35,682 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 59 [2023-12-20 03:30:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:35,683 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2023-12-20 03:30:35,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2023-12-20 03:30:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 03:30:35,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:35,686 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] [2023-12-20 03:30:35,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:30:35,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:35,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1884320944, now seen corresponding path program 1 times [2023-12-20 03:30:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512532303] [2023-12-20 03:30:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:35,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512532303] [2023-12-20 03:30:35,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512532303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:35,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:35,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:30:35,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143195249] [2023-12-20 03:30:35,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:35,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:30:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:30:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:35,867 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:35,892 INFO L93 Difference]: Finished difference Result 359 states and 550 transitions. [2023-12-20 03:30:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:30:35,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 03:30:35,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:35,897 INFO L225 Difference]: With dead ends: 359 [2023-12-20 03:30:35,897 INFO L226 Difference]: Without dead ends: 245 [2023-12-20 03:30:35,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:35,900 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 78 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:35,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-20 03:30:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2023-12-20 03:30:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.512396694214876) internal successors, (366), 242 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 366 transitions. [2023-12-20 03:30:35,920 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 366 transitions. Word has length 60 [2023-12-20 03:30:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:35,920 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 366 transitions. [2023-12-20 03:30:35,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 366 transitions. [2023-12-20 03:30:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 03:30:35,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:35,921 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] [2023-12-20 03:30:35,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:30:35,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:35,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1090276998, now seen corresponding path program 1 times [2023-12-20 03:30:35,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:35,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944289931] [2023-12-20 03:30:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:36,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:36,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944289931] [2023-12-20 03:30:36,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944289931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:36,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:36,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:30:36,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737875476] [2023-12-20 03:30:36,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:36,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:30:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:30:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:36,037 INFO L87 Difference]: Start difference. First operand 243 states and 366 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:36,057 INFO L93 Difference]: Finished difference Result 631 states and 980 transitions. [2023-12-20 03:30:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:30:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-20 03:30:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:36,060 INFO L225 Difference]: With dead ends: 631 [2023-12-20 03:30:36,060 INFO L226 Difference]: Without dead ends: 421 [2023-12-20 03:30:36,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:36,067 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:36,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-20 03:30:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2023-12-20 03:30:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.5358851674641147) internal successors, (642), 418 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 642 transitions. [2023-12-20 03:30:36,090 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 642 transitions. Word has length 61 [2023-12-20 03:30:36,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:36,091 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 642 transitions. [2023-12-20 03:30:36,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 642 transitions. [2023-12-20 03:30:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 03:30:36,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:36,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:36,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:30:36,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:36,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash -27171808, now seen corresponding path program 1 times [2023-12-20 03:30:36,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:36,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224584894] [2023-12-20 03:30:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:36,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:36,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:36,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224584894] [2023-12-20 03:30:36,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224584894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:36,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:36,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:30:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857541841] [2023-12-20 03:30:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:30:36,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:30:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:36,181 INFO L87 Difference]: Start difference. First operand 419 states and 642 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:36,196 INFO L93 Difference]: Finished difference Result 1127 states and 1756 transitions. [2023-12-20 03:30:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:30:36,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 03:30:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:36,199 INFO L225 Difference]: With dead ends: 1127 [2023-12-20 03:30:36,199 INFO L226 Difference]: Without dead ends: 741 [2023-12-20 03:30:36,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:36,201 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 68 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:36,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 277 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-12-20 03:30:36,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 739. [2023-12-20 03:30:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 1.5420054200542006) internal successors, (1138), 738 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1138 transitions. [2023-12-20 03:30:36,222 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1138 transitions. Word has length 62 [2023-12-20 03:30:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:36,223 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1138 transitions. [2023-12-20 03:30:36,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1138 transitions. [2023-12-20 03:30:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 03:30:36,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:36,224 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] [2023-12-20 03:30:36,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:30:36,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:36,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2064580108, now seen corresponding path program 1 times [2023-12-20 03:30:36,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:36,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145060666] [2023-12-20 03:30:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:36,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:36,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145060666] [2023-12-20 03:30:36,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145060666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:36,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:36,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:30:36,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479211759] [2023-12-20 03:30:36,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:36,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:30:36,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:36,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:30:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:36,387 INFO L87 Difference]: Start difference. First operand 739 states and 1138 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:36,593 INFO L93 Difference]: Finished difference Result 7799 states and 12188 transitions. [2023-12-20 03:30:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:30:36,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-20 03:30:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:36,615 INFO L225 Difference]: With dead ends: 7799 [2023-12-20 03:30:36,615 INFO L226 Difference]: Without dead ends: 7093 [2023-12-20 03:30:36,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 03:30:36,620 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 1198 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:36,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1760 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:30:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2023-12-20 03:30:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 1443. [2023-12-20 03:30:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.5325936199722607) internal successors, (2210), 1442 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2210 transitions. [2023-12-20 03:30:36,697 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2210 transitions. Word has length 63 [2023-12-20 03:30:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:36,699 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 2210 transitions. [2023-12-20 03:30:36,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2210 transitions. [2023-12-20 03:30:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 03:30:36,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:36,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:36,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:30:36,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:36,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:36,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1135227800, now seen corresponding path program 1 times [2023-12-20 03:30:36,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:36,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438071836] [2023-12-20 03:30:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:36,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:36,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:36,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438071836] [2023-12-20 03:30:36,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438071836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:36,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:36,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:30:36,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829947562] [2023-12-20 03:30:36,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:36,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:30:36,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:36,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:30:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:36,802 INFO L87 Difference]: Start difference. First operand 1443 states and 2210 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:36,827 INFO L93 Difference]: Finished difference Result 4087 states and 6260 transitions. [2023-12-20 03:30:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:30:36,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 03:30:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:36,835 INFO L225 Difference]: With dead ends: 4087 [2023-12-20 03:30:36,835 INFO L226 Difference]: Without dead ends: 2677 [2023-12-20 03:30:36,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:36,839 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 58 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:36,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 219 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2023-12-20 03:30:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2643. [2023-12-20 03:30:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2642 states have (on average 1.5026495079485238) internal successors, (3970), 2642 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3970 transitions. [2023-12-20 03:30:36,882 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3970 transitions. Word has length 65 [2023-12-20 03:30:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:36,883 INFO L495 AbstractCegarLoop]: Abstraction has 2643 states and 3970 transitions. [2023-12-20 03:30:36,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3970 transitions. [2023-12-20 03:30:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 03:30:36,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:36,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:36,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:30:36,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:36,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1114225145, now seen corresponding path program 1 times [2023-12-20 03:30:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803820600] [2023-12-20 03:30:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:37,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:37,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803820600] [2023-12-20 03:30:37,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803820600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:37,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:37,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:30:37,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349860304] [2023-12-20 03:30:37,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:37,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:30:37,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:37,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:30:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:37,114 INFO L87 Difference]: Start difference. First operand 2643 states and 3970 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:37,245 INFO L93 Difference]: Finished difference Result 5255 states and 7908 transitions. [2023-12-20 03:30:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:30:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 03:30:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:37,251 INFO L225 Difference]: With dead ends: 5255 [2023-12-20 03:30:37,252 INFO L226 Difference]: Without dead ends: 2645 [2023-12-20 03:30:37,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 03:30:37,255 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 148 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:37,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 506 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2023-12-20 03:30:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2643. [2023-12-20 03:30:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2642 states have (on average 1.490537471612415) internal successors, (3938), 2642 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3938 transitions. [2023-12-20 03:30:37,319 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3938 transitions. Word has length 65 [2023-12-20 03:30:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:37,319 INFO L495 AbstractCegarLoop]: Abstraction has 2643 states and 3938 transitions. [2023-12-20 03:30:37,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3938 transitions. [2023-12-20 03:30:37,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:30:37,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:37,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:37,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:30:37,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:37,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash -234566684, now seen corresponding path program 1 times [2023-12-20 03:30:37,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:37,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253643354] [2023-12-20 03:30:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:37,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253643354] [2023-12-20 03:30:37,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253643354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:37,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:37,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:30:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427311357] [2023-12-20 03:30:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:37,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:30:37,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:37,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:30:37,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:37,358 INFO L87 Difference]: Start difference. First operand 2643 states and 3938 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:37,380 INFO L93 Difference]: Finished difference Result 5146 states and 7752 transitions. [2023-12-20 03:30:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:30:37,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:30:37,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:37,389 INFO L225 Difference]: With dead ends: 5146 [2023-12-20 03:30:37,389 INFO L226 Difference]: Without dead ends: 3735 [2023-12-20 03:30:37,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:37,392 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:37,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 297 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:37,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2023-12-20 03:30:37,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3733. [2023-12-20 03:30:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.4887459807073955) internal successors, (5556), 3732 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5556 transitions. [2023-12-20 03:30:37,438 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5556 transitions. Word has length 66 [2023-12-20 03:30:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:37,438 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5556 transitions. [2023-12-20 03:30:37,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5556 transitions. [2023-12-20 03:30:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:30:37,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:37,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:37,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:30:37,439 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:37,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash -183150479, now seen corresponding path program 1 times [2023-12-20 03:30:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:37,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925029400] [2023-12-20 03:30:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:37,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:37,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925029400] [2023-12-20 03:30:37,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925029400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:37,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:37,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:30:37,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877934631] [2023-12-20 03:30:37,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:37,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:30:37,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:37,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:30:37,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:30:37,503 INFO L87 Difference]: Start difference. First operand 3733 states and 5556 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:37,574 INFO L93 Difference]: Finished difference Result 7431 states and 11077 transitions. [2023-12-20 03:30:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:30:37,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:30:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:37,583 INFO L225 Difference]: With dead ends: 7431 [2023-12-20 03:30:37,583 INFO L226 Difference]: Without dead ends: 3733 [2023-12-20 03:30:37,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:37,587 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 322 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:37,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 99 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2023-12-20 03:30:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3733. [2023-12-20 03:30:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.4758842443729903) internal successors, (5508), 3732 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5508 transitions. [2023-12-20 03:30:37,639 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5508 transitions. Word has length 66 [2023-12-20 03:30:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:37,639 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5508 transitions. [2023-12-20 03:30:37,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5508 transitions. [2023-12-20 03:30:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:30:37,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:37,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:37,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:30:37,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:37,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash -55065172, now seen corresponding path program 1 times [2023-12-20 03:30:37,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:37,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154107811] [2023-12-20 03:30:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:37,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154107811] [2023-12-20 03:30:37,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154107811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:37,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:37,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:30:37,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226423994] [2023-12-20 03:30:37,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:37,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:30:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:30:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:30:37,713 INFO L87 Difference]: Start difference. First operand 3733 states and 5508 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:37,783 INFO L93 Difference]: Finished difference Result 7431 states and 10981 transitions. [2023-12-20 03:30:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:30:37,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:30:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:37,806 INFO L225 Difference]: With dead ends: 7431 [2023-12-20 03:30:37,806 INFO L226 Difference]: Without dead ends: 3733 [2023-12-20 03:30:37,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:37,812 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 293 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:37,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 115 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2023-12-20 03:30:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3733. [2023-12-20 03:30:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.4630225080385852) internal successors, (5460), 3732 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5460 transitions. [2023-12-20 03:30:37,890 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5460 transitions. Word has length 66 [2023-12-20 03:30:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:37,890 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5460 transitions. [2023-12-20 03:30:37,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5460 transitions. [2023-12-20 03:30:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:30:37,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:37,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:37,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:30:37,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:37,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash -584355673, now seen corresponding path program 1 times [2023-12-20 03:30:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639920332] [2023-12-20 03:30:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639920332] [2023-12-20 03:30:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639920332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:37,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:37,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:30:37,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979205735] [2023-12-20 03:30:37,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:37,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:30:37,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:30:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:30:37,968 INFO L87 Difference]: Start difference. First operand 3733 states and 5460 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:38,043 INFO L93 Difference]: Finished difference Result 7431 states and 10885 transitions. [2023-12-20 03:30:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:30:38,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:30:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:38,048 INFO L225 Difference]: With dead ends: 7431 [2023-12-20 03:30:38,049 INFO L226 Difference]: Without dead ends: 3733 [2023-12-20 03:30:38,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:38,053 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 329 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:38,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 91 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2023-12-20 03:30:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3733. [2023-12-20 03:30:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.45016077170418) internal successors, (5412), 3732 states have internal predecessors, (5412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5412 transitions. [2023-12-20 03:30:38,109 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5412 transitions. Word has length 66 [2023-12-20 03:30:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:38,109 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5412 transitions. [2023-12-20 03:30:38,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5412 transitions. [2023-12-20 03:30:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:30:38,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:38,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:38,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:30:38,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:38,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1347219380, now seen corresponding path program 1 times [2023-12-20 03:30:38,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:38,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974166960] [2023-12-20 03:30:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:38,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:38,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974166960] [2023-12-20 03:30:38,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974166960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:38,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:38,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:30:38,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981448615] [2023-12-20 03:30:38,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:38,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:30:38,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:30:38,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:30:38,253 INFO L87 Difference]: Start difference. First operand 3733 states and 5412 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:38,296 INFO L93 Difference]: Finished difference Result 6717 states and 9707 transitions. [2023-12-20 03:30:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:30:38,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:30:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:38,305 INFO L225 Difference]: With dead ends: 6717 [2023-12-20 03:30:38,305 INFO L226 Difference]: Without dead ends: 6715 [2023-12-20 03:30:38,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:30:38,308 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 174 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:38,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 580 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2023-12-20 03:30:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 3861. [2023-12-20 03:30:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3861 states, 3860 states have (on average 1.4310880829015544) internal successors, (5524), 3860 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 5524 transitions. [2023-12-20 03:30:38,375 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 5524 transitions. Word has length 66 [2023-12-20 03:30:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:38,376 INFO L495 AbstractCegarLoop]: Abstraction has 3861 states and 5524 transitions. [2023-12-20 03:30:38,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 5524 transitions. [2023-12-20 03:30:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:30:38,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:38,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:38,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:30:38,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:38,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:38,378 INFO L85 PathProgramCache]: Analyzing trace with hash 347946167, now seen corresponding path program 1 times [2023-12-20 03:30:38,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:38,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600967281] [2023-12-20 03:30:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:38,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 03:30:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600967281] [2023-12-20 03:30:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600967281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:30:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902428005] [2023-12-20 03:30:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:38,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:30:38,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:38,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:30:38,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:38,490 INFO L87 Difference]: Start difference. First operand 3861 states and 5524 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) [2023-12-20 03:30:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:38,625 INFO L93 Difference]: Finished difference Result 23713 states and 33970 transitions. [2023-12-20 03:30:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:30:38,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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 93 [2023-12-20 03:30:38,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:38,659 INFO L225 Difference]: With dead ends: 23713 [2023-12-20 03:30:38,659 INFO L226 Difference]: Without dead ends: 19887 [2023-12-20 03:30:38,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:30:38,668 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 928 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:38,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 786 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:38,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19887 states. [2023-12-20 03:30:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19887 to 7685. [2023-12-20 03:30:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7684 states have (on average 1.426861009890682) internal successors, (10964), 7684 states have internal predecessors, (10964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:38,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 10964 transitions. [2023-12-20 03:30:38,826 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 10964 transitions. Word has length 93 [2023-12-20 03:30:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:38,826 INFO L495 AbstractCegarLoop]: Abstraction has 7685 states and 10964 transitions. [2023-12-20 03:30:38,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) [2023-12-20 03:30:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 10964 transitions. [2023-12-20 03:30:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:30:38,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:38,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:38,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:30:38,829 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:38,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:38,830 INFO L85 PathProgramCache]: Analyzing trace with hash -805999939, now seen corresponding path program 1 times [2023-12-20 03:30:38,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:38,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876921328] [2023-12-20 03:30:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:38,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 03:30:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876921328] [2023-12-20 03:30:38,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876921328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:38,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:38,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:30:38,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618552440] [2023-12-20 03:30:38,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:38,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:30:38,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:30:38,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:38,935 INFO L87 Difference]: Start difference. First operand 7685 states and 10964 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2023-12-20 03:30:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:39,077 INFO L93 Difference]: Finished difference Result 27537 states and 39410 transitions. [2023-12-20 03:30:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:30:39,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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 93 [2023-12-20 03:30:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:39,111 INFO L225 Difference]: With dead ends: 27537 [2023-12-20 03:30:39,112 INFO L226 Difference]: Without dead ends: 23711 [2023-12-20 03:30:39,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:30:39,122 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 879 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:39,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 813 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:39,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23711 states. [2023-12-20 03:30:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23711 to 13429. [2023-12-20 03:30:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13429 states, 13428 states have (on average 1.4212094131665178) internal successors, (19084), 13428 states have internal predecessors, (19084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13429 states to 13429 states and 19084 transitions. [2023-12-20 03:30:39,354 INFO L78 Accepts]: Start accepts. Automaton has 13429 states and 19084 transitions. Word has length 93 [2023-12-20 03:30:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:39,354 INFO L495 AbstractCegarLoop]: Abstraction has 13429 states and 19084 transitions. [2023-12-20 03:30:39,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2023-12-20 03:30:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 13429 states and 19084 transitions. [2023-12-20 03:30:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:30:39,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:39,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:39,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:30:39,358 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:39,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash -509954511, now seen corresponding path program 1 times [2023-12-20 03:30:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877544244] [2023-12-20 03:30:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:39,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:30:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:39,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877544244] [2023-12-20 03:30:39,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877544244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:39,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:39,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:30:39,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301231391] [2023-12-20 03:30:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:39,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:30:39,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:39,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:30:39,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:39,461 INFO L87 Difference]: Start difference. First operand 13429 states and 19084 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) 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) [2023-12-20 03:30:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:39,614 INFO L93 Difference]: Finished difference Result 31361 states and 44850 transitions. [2023-12-20 03:30:39,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:30:39,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) 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 93 [2023-12-20 03:30:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:39,658 INFO L225 Difference]: With dead ends: 31361 [2023-12-20 03:30:39,658 INFO L226 Difference]: Without dead ends: 27535 [2023-12-20 03:30:39,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:30:39,671 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 774 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:39,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 929 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:39,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27535 states. [2023-12-20 03:30:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27535 to 17253. [2023-12-20 03:30:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17253 states, 17252 states have (on average 1.4215163459309066) internal successors, (24524), 17252 states have internal predecessors, (24524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17253 states to 17253 states and 24524 transitions. [2023-12-20 03:30:40,073 INFO L78 Accepts]: Start accepts. Automaton has 17253 states and 24524 transitions. Word has length 93 [2023-12-20 03:30:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:40,073 INFO L495 AbstractCegarLoop]: Abstraction has 17253 states and 24524 transitions. [2023-12-20 03:30:40,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) 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) [2023-12-20 03:30:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 17253 states and 24524 transitions. [2023-12-20 03:30:40,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:30:40,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:40,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:40,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:30:40,077 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:40,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:40,078 INFO L85 PathProgramCache]: Analyzing trace with hash 918542123, now seen corresponding path program 1 times [2023-12-20 03:30:40,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:40,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064427479] [2023-12-20 03:30:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:40,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 03:30:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064427479] [2023-12-20 03:30:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064427479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:40,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:30:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290227125] [2023-12-20 03:30:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:30:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:30:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:40,199 INFO L87 Difference]: Start difference. First operand 17253 states and 24524 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) 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) [2023-12-20 03:30:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:40,362 INFO L93 Difference]: Finished difference Result 35185 states and 50290 transitions. [2023-12-20 03:30:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:30:40,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) 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 93 [2023-12-20 03:30:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:40,411 INFO L225 Difference]: With dead ends: 35185 [2023-12-20 03:30:40,412 INFO L226 Difference]: Without dead ends: 31359 [2023-12-20 03:30:40,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:30:40,425 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 817 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:40,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 930 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31359 states. [2023-12-20 03:30:40,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31359 to 21077. [2023-12-20 03:30:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21077 states, 21076 states have (on average 1.4217118997912317) internal successors, (29964), 21076 states have internal predecessors, (29964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21077 states to 21077 states and 29964 transitions. [2023-12-20 03:30:40,783 INFO L78 Accepts]: Start accepts. Automaton has 21077 states and 29964 transitions. Word has length 93 [2023-12-20 03:30:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:40,783 INFO L495 AbstractCegarLoop]: Abstraction has 21077 states and 29964 transitions. [2023-12-20 03:30:40,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) 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) [2023-12-20 03:30:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 21077 states and 29964 transitions. [2023-12-20 03:30:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 03:30:40,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:40,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:40,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:30:40,787 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:40,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:40,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1542410051, now seen corresponding path program 1 times [2023-12-20 03:30:40,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:40,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027530420] [2023-12-20 03:30:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:40,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:30:41,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:41,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027530420] [2023-12-20 03:30:41,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027530420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:41,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:41,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:30:41,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600255789] [2023-12-20 03:30:41,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:41,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:30:41,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:41,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:30:41,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:30:41,010 INFO L87 Difference]: Start difference. First operand 21077 states and 29964 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:41,181 INFO L93 Difference]: Finished difference Result 36609 states and 52370 transitions. [2023-12-20 03:30:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:30:41,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 03:30:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:41,234 INFO L225 Difference]: With dead ends: 36609 [2023-12-20 03:30:41,234 INFO L226 Difference]: Without dead ends: 33983 [2023-12-20 03:30:41,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:30:41,247 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 809 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:41,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 860 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:30:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33983 states. [2023-12-20 03:30:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33983 to 23701. [2023-12-20 03:30:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23701 states, 23700 states have (on average 1.4236286919831223) internal successors, (33740), 23700 states have internal predecessors, (33740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23701 states to 23701 states and 33740 transitions. [2023-12-20 03:30:41,621 INFO L78 Accepts]: Start accepts. Automaton has 23701 states and 33740 transitions. Word has length 94 [2023-12-20 03:30:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:41,621 INFO L495 AbstractCegarLoop]: Abstraction has 23701 states and 33740 transitions. [2023-12-20 03:30:41,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:41,621 INFO L276 IsEmpty]: Start isEmpty. Operand 23701 states and 33740 transitions. [2023-12-20 03:30:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:30:41,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:41,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:30:41,625 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:41,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash 342548852, now seen corresponding path program 1 times [2023-12-20 03:30:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:41,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325305048] [2023-12-20 03:30:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:42,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:42,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325305048] [2023-12-20 03:30:42,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325305048] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:30:42,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666820441] [2023-12-20 03:30:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:42,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:30:42,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:30:42,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:30:42,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 03:30:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:42,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 03:30:42,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:30:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:30:42,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:30:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:30:42,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666820441] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:30:42,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:30:42,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-20 03:30:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259528731] [2023-12-20 03:30:42,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:30:42,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 03:30:42,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:42,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 03:30:42,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:30:42,576 INFO L87 Difference]: Start difference. First operand 23701 states and 33740 transitions. Second operand has 17 states, 17 states have (on average 16.0) internal successors, (272), 17 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:52,585 INFO L93 Difference]: Finished difference Result 425449 states and 596374 transitions. [2023-12-20 03:30:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-20 03:30:52,586 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.0) internal successors, (272), 17 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:30:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:53,479 INFO L225 Difference]: With dead ends: 425449 [2023-12-20 03:30:53,479 INFO L226 Difference]: Without dead ends: 401783 [2023-12-20 03:30:53,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29410 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=8236, Invalid=53516, Unknown=0, NotChecked=0, Total=61752 [2023-12-20 03:30:53,743 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 8614 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 3067 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8614 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:53,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8614 Valid, 2411 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 3067 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 03:30:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401783 states. [2023-12-20 03:30:56,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401783 to 165853. [2023-12-20 03:30:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165853 states, 165852 states have (on average 1.393386875045221) internal successors, (231096), 165852 states have internal predecessors, (231096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165853 states to 165853 states and 231096 transitions. [2023-12-20 03:30:57,678 INFO L78 Accepts]: Start accepts. Automaton has 165853 states and 231096 transitions. Word has length 95 [2023-12-20 03:30:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:57,678 INFO L495 AbstractCegarLoop]: Abstraction has 165853 states and 231096 transitions. [2023-12-20 03:30:57,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.0) internal successors, (272), 17 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 165853 states and 231096 transitions. [2023-12-20 03:30:57,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:30:57,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:57,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:57,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 03:30:57,889 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,SelfDestructingSolverStorable17 [2023-12-20 03:30:57,890 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:57,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash 675454055, now seen corresponding path program 1 times [2023-12-20 03:30:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:57,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321622592] [2023-12-20 03:30:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:57,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321622592] [2023-12-20 03:30:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321622592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:30:57,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:30:57,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:30:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285878390] [2023-12-20 03:30:57,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:30:57,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:30:57,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:30:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:57,953 INFO L87 Difference]: Start difference. First operand 165853 states and 231096 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:58,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:59,000 INFO L93 Difference]: Finished difference Result 294268 states and 409720 transitions. [2023-12-20 03:30:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:30:59,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:30:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:59,188 INFO L225 Difference]: With dead ends: 294268 [2023-12-20 03:30:59,188 INFO L226 Difference]: Without dead ends: 128450 [2023-12-20 03:30:59,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:30:59,438 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 59 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:59,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 280 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:30:59,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128450 states. [2023-12-20 03:31:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128450 to 128448. [2023-12-20 03:31:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128448 states, 128447 states have (on average 1.3765677672503056) internal successors, (176816), 128447 states have internal predecessors, (176816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128448 states to 128448 states and 176816 transitions. [2023-12-20 03:31:01,399 INFO L78 Accepts]: Start accepts. Automaton has 128448 states and 176816 transitions. Word has length 95 [2023-12-20 03:31:01,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:31:01,399 INFO L495 AbstractCegarLoop]: Abstraction has 128448 states and 176816 transitions. [2023-12-20 03:31:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:01,399 INFO L276 IsEmpty]: Start isEmpty. Operand 128448 states and 176816 transitions. [2023-12-20 03:31:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 03:31:01,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:31:01,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:31:01,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:31:01,402 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:31:01,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:31:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2087401601, now seen corresponding path program 1 times [2023-12-20 03:31:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:31:01,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056850596] [2023-12-20 03:31:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:01,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:31:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:01,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:31:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056850596] [2023-12-20 03:31:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056850596] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:31:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572804750] [2023-12-20 03:31:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:01,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:31:01,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:31:01,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:31:01,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 03:31:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:01,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:31:01,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:31:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:02,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:31:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:02,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572804750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:31:02,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:31:02,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-20 03:31:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267098353] [2023-12-20 03:31:02,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:31:02,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:31:02,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:31:02,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:31:02,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:31:02,971 INFO L87 Difference]: Start difference. First operand 128448 states and 176816 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:05,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:31:05,719 INFO L93 Difference]: Finished difference Result 711275 states and 969359 transitions. [2023-12-20 03:31:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 03:31:05,720 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 0 states have call successors, (0), 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 96 [2023-12-20 03:31:05,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:31:07,045 INFO L225 Difference]: With dead ends: 711275 [2023-12-20 03:31:07,046 INFO L226 Difference]: Without dead ends: 587694 [2023-12-20 03:31:07,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=538, Invalid=1624, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 03:31:07,175 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1662 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:31:07,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 1491 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 03:31:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587694 states. [2023-12-20 03:31:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587694 to 257400. [2023-12-20 03:31:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257400 states, 257399 states have (on average 1.3650480382596668) internal successors, (351362), 257399 states have internal predecessors, (351362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257400 states to 257400 states and 351362 transitions. [2023-12-20 03:31:12,843 INFO L78 Accepts]: Start accepts. Automaton has 257400 states and 351362 transitions. Word has length 96 [2023-12-20 03:31:12,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:31:12,843 INFO L495 AbstractCegarLoop]: Abstraction has 257400 states and 351362 transitions. [2023-12-20 03:31:12,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 257400 states and 351362 transitions. [2023-12-20 03:31:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 03:31:12,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:31:12,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:31:12,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 03:31:13,052 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,SelfDestructingSolverStorable19 [2023-12-20 03:31:13,053 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:31:13,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:31:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1968240871, now seen corresponding path program 1 times [2023-12-20 03:31:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:31:13,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552074771] [2023-12-20 03:31:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:31:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:13,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:31:13,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552074771] [2023-12-20 03:31:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552074771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:31:13,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451753155] [2023-12-20 03:31:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:13,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:31:13,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:31:13,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:31:13,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 03:31:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:13,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:31:13,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:31:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:13,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:31:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:14,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451753155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:31:14,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:31:14,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-12-20 03:31:14,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509486337] [2023-12-20 03:31:14,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:31:14,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 03:31:14,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:31:14,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 03:31:14,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-20 03:31:14,160 INFO L87 Difference]: Start difference. First operand 257400 states and 351362 transitions. Second operand has 20 states, 20 states have (on average 10.5) internal successors, (210), 19 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:18,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:31:18,749 INFO L93 Difference]: Finished difference Result 1438943 states and 1946238 transitions. [2023-12-20 03:31:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-20 03:31:18,750 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.5) internal successors, (210), 19 states have internal predecessors, (210), 0 states have call successors, (0), 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 96 [2023-12-20 03:31:18,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:31:20,896 INFO L225 Difference]: With dead ends: 1438943 [2023-12-20 03:31:20,896 INFO L226 Difference]: Without dead ends: 1181580 [2023-12-20 03:31:21,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 03:31:21,423 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 2788 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2788 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:31:21,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2788 Valid, 1364 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 03:31:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181580 states. [2023-12-20 03:31:30,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181580 to 595880. [2023-12-20 03:31:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595880 states, 595879 states have (on average 1.3528434464043875) internal successors, (806131), 595879 states have internal predecessors, (806131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595880 states to 595880 states and 806131 transitions. [2023-12-20 03:31:34,365 INFO L78 Accepts]: Start accepts. Automaton has 595880 states and 806131 transitions. Word has length 96 [2023-12-20 03:31:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:31:34,365 INFO L495 AbstractCegarLoop]: Abstraction has 595880 states and 806131 transitions. [2023-12-20 03:31:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.5) internal successors, (210), 19 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 595880 states and 806131 transitions. [2023-12-20 03:31:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:31:34,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:31:34,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:31:34,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 03:31:34,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:31:34,577 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:31:34,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:31:34,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2018736231, now seen corresponding path program 1 times [2023-12-20 03:31:34,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:31:34,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867132994] [2023-12-20 03:31:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:34,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:31:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:31:34,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:31:34,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867132994] [2023-12-20 03:31:34,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867132994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:31:34,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:31:34,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:31:34,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747560903] [2023-12-20 03:31:34,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:31:34,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:31:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:31:34,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:31:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:31:34,636 INFO L87 Difference]: Start difference. First operand 595880 states and 806131 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:31:39,510 INFO L93 Difference]: Finished difference Result 1156109 states and 1570577 transitions. [2023-12-20 03:31:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:31:39,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 03:31:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:31:40,789 INFO L225 Difference]: With dead ends: 1156109 [2023-12-20 03:31:40,789 INFO L226 Difference]: Without dead ends: 560387 [2023-12-20 03:31:41,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:31:41,367 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 68 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:31:41,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 120 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:31:41,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560387 states. [2023-12-20 03:31:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560387 to 560387. [2023-12-20 03:31:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560387 states, 560386 states have (on average 1.3517379092268544) internal successors, (757495), 560386 states have internal predecessors, (757495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560387 states to 560387 states and 757495 transitions. [2023-12-20 03:31:50,027 INFO L78 Accepts]: Start accepts. Automaton has 560387 states and 757495 transitions. Word has length 97 [2023-12-20 03:31:50,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:31:50,027 INFO L495 AbstractCegarLoop]: Abstraction has 560387 states and 757495 transitions. [2023-12-20 03:31:50,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 560387 states and 757495 transitions. [2023-12-20 03:31:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:31:50,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:31:50,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:31:50,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:31:50,033 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:31:50,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:31:50,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1517371200, now seen corresponding path program 1 times [2023-12-20 03:31:50,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:31:50,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92327873] [2023-12-20 03:31:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:31:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:50,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:31:50,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92327873] [2023-12-20 03:31:50,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92327873] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:31:50,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003343407] [2023-12-20 03:31:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:50,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:31:50,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:31:50,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:31:50,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 03:31:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:51,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:31:51,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:31:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:51,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:31:52,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:52,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003343407] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:31:52,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:31:52,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-20 03:31:52,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927935455] [2023-12-20 03:31:52,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:31:52,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:31:52,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:31:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:31:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:31:52,046 INFO L87 Difference]: Start difference. First operand 560387 states and 757495 transitions. Second operand has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 18 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:32:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:32:03,458 INFO L93 Difference]: Finished difference Result 3434555 states and 4606055 transitions. [2023-12-20 03:32:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 03:32:03,458 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 18 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 03:32:03,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:32:10,781 INFO L225 Difference]: With dead ends: 3434555 [2023-12-20 03:32:10,781 INFO L226 Difference]: Without dead ends: 2948137 [2023-12-20 03:32:11,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=805, Invalid=2275, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 03:32:11,350 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 2291 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:32:11,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 1217 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:32:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948137 states. [2023-12-20 03:32:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948137 to 1339464.