/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:09:12,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:09:13,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:09:13,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:09:13,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:09:13,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:09:13,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:09:13,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:09:13,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:09:13,096 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:09:13,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:09:13,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:09:13,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:09:13,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:09:13,099 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:09:13,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:09:13,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:09:13,099 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:09:13,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:09:13,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:09:13,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:09:13,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:09:13,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:09:13,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:09:13,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:09:13,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:09:13,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:09:13,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:09:13,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:09:13,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:09:13,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:09:13,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:09:13,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:09:13,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:09:13,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:09:13,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:09:13,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:09:13,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:09:13,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:09:13,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:09:13,106 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:09:13,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:09:13,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:09:13,107 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:09:13,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:09:13,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:09:13,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:09:13,384 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:09:13,384 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:09:13,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:09:14,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:09:14,814 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:09:14,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:09:14,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ba93f81/504c2364d90e464580afb7fb9d2bafe3/FLAG5284ef86a [2023-12-21 14:09:14,842 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ba93f81/504c2364d90e464580afb7fb9d2bafe3 [2023-12-21 14:09:14,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:09:14,845 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:09:14,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:09:14,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:09:14,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:09:14,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:09:14" (1/1) ... [2023-12-21 14:09:14,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4109d7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:14, skipping insertion in model container [2023-12-21 14:09:14,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:09:14" (1/1) ... [2023-12-21 14:09:14,894 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:09:15,126 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.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6732,6745] [2023-12-21 14:09:15,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:09:15,181 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:09:15,234 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.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6732,6745] [2023-12-21 14:09:15,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:09:15,272 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:09:15,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15 WrapperNode [2023-12-21 14:09:15,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:09:15,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:09:15,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:09:15,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:09:15,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,328 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 531 [2023-12-21 14:09:15,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:09:15,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:09:15,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:09:15,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:09:15,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,364 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]. [2023-12-21 14:09:15,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,392 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:09:15,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:09:15,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:09:15,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:09:15,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (1/1) ... [2023-12-21 14:09:15,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:09:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:09:15,437 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) [2023-12-21 14:09:15,448 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 [2023-12-21 14:09:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:09:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:09:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:09:15,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:09:15,611 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:09:15,613 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:09:16,078 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:09:16,111 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:09:16,112 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:09:16,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:09:16 BoogieIcfgContainer [2023-12-21 14:09:16,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:09:16,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:09:16,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:09:16,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:09:16,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:09:14" (1/3) ... [2023-12-21 14:09:16,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c4fdc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:09:16, skipping insertion in model container [2023-12-21 14:09:16,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:15" (2/3) ... [2023-12-21 14:09:16,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c4fdc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:09:16, skipping insertion in model container [2023-12-21 14:09:16,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:09:16" (3/3) ... [2023-12-21 14:09:16,119 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:09:16,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:09:16,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:09:16,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:09:16,178 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;@259ce8de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:09:16,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:09:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 115 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 14:09:16,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:16,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:16,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:16,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:16,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1168522135, now seen corresponding path program 1 times [2023-12-21 14:09:16,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:16,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644458631] [2023-12-21 14:09:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:16,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:16,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:16,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644458631] [2023-12-21 14:09:16,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644458631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:16,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:16,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:16,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353998856] [2023-12-21 14:09:16,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:16,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:16,713 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 115 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:16,794 INFO L93 Difference]: Finished difference Result 256 states and 418 transitions. [2023-12-21 14:09:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:16,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-12-21 14:09:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:16,810 INFO L225 Difference]: With dead ends: 256 [2023-12-21 14:09:16,811 INFO L226 Difference]: Without dead ends: 178 [2023-12-21 14:09:16,813 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 [2023-12-21 14:09:16,816 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 132 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 395 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 [2023-12-21 14:09:16,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 395 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-21 14:09:16,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2023-12-21 14:09:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.457142857142857) internal successors, (255), 175 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 255 transitions. [2023-12-21 14:09:16,875 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 255 transitions. Word has length 72 [2023-12-21 14:09:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:16,875 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 255 transitions. [2023-12-21 14:09:16,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:16,876 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 255 transitions. [2023-12-21 14:09:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 14:09:16,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:16,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:16,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:09:16,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:16,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:16,881 INFO L85 PathProgramCache]: Analyzing trace with hash 199267447, now seen corresponding path program 1 times [2023-12-21 14:09:16,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:16,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933993105] [2023-12-21 14:09:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:16,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933993105] [2023-12-21 14:09:17,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933993105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:17,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:17,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:17,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978847612] [2023-12-21 14:09:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:17,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:17,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:17,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:17,048 INFO L87 Difference]: Start difference. First operand 176 states and 255 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:17,082 INFO L93 Difference]: Finished difference Result 428 states and 655 transitions. [2023-12-21 14:09:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:17,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-21 14:09:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:17,086 INFO L225 Difference]: With dead ends: 428 [2023-12-21 14:09:17,086 INFO L226 Difference]: Without dead ends: 294 [2023-12-21 14:09:17,088 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 [2023-12-21 14:09:17,089 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 94 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 342 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 [2023-12-21 14:09:17,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 342 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-21 14:09:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2023-12-21 14:09:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.5085910652920962) internal successors, (439), 291 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 439 transitions. [2023-12-21 14:09:17,115 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 439 transitions. Word has length 73 [2023-12-21 14:09:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:17,116 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 439 transitions. [2023-12-21 14:09:17,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 439 transitions. [2023-12-21 14:09:17,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 14:09:17,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:17,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:17,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:09:17,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:17,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:17,118 INFO L85 PathProgramCache]: Analyzing trace with hash -619794628, now seen corresponding path program 1 times [2023-12-21 14:09:17,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:17,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991329692] [2023-12-21 14:09:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:17,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:17,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:17,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991329692] [2023-12-21 14:09:17,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991329692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:17,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:17,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:17,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182992111] [2023-12-21 14:09:17,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:17,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:17,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:17,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:17,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:17,257 INFO L87 Difference]: Start difference. First operand 292 states and 439 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:17,290 INFO L93 Difference]: Finished difference Result 760 states and 1181 transitions. [2023-12-21 14:09:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:17,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 14:09:17,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:17,295 INFO L225 Difference]: With dead ends: 760 [2023-12-21 14:09:17,295 INFO L226 Difference]: Without dead ends: 510 [2023-12-21 14:09:17,300 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 [2023-12-21 14:09:17,302 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 338 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 [2023-12-21 14:09:17,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 338 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-12-21 14:09:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2023-12-21 14:09:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.5364891518737673) internal successors, (779), 507 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 779 transitions. [2023-12-21 14:09:17,317 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 779 transitions. Word has length 74 [2023-12-21 14:09:17,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:17,321 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 779 transitions. [2023-12-21 14:09:17,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 779 transitions. [2023-12-21 14:09:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 14:09:17,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:17,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:17,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:09:17,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:17,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -544666826, now seen corresponding path program 1 times [2023-12-21 14:09:17,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:17,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056786267] [2023-12-21 14:09:17,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:17,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056786267] [2023-12-21 14:09:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056786267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:17,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:17,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:17,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021756967] [2023-12-21 14:09:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:17,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:17,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:17,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:17,433 INFO L87 Difference]: Start difference. First operand 508 states and 779 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:17,455 INFO L93 Difference]: Finished difference Result 1376 states and 2149 transitions. [2023-12-21 14:09:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:17,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 14:09:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:17,462 INFO L225 Difference]: With dead ends: 1376 [2023-12-21 14:09:17,462 INFO L226 Difference]: Without dead ends: 910 [2023-12-21 14:09:17,463 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 [2023-12-21 14:09:17,468 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 84 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 334 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 [2023-12-21 14:09:17,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 334 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-21 14:09:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-21 14:09:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 1.5468577728776185) internal successors, (1403), 907 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1403 transitions. [2023-12-21 14:09:17,490 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1403 transitions. Word has length 75 [2023-12-21 14:09:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:17,490 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1403 transitions. [2023-12-21 14:09:17,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1403 transitions. [2023-12-21 14:09:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 14:09:17,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:17,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:17,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:09:17,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:17,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1064989273, now seen corresponding path program 1 times [2023-12-21 14:09:17,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:17,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66912225] [2023-12-21 14:09:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:17,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:17,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66912225] [2023-12-21 14:09:17,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66912225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:17,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:17,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:17,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29373765] [2023-12-21 14:09:17,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:17,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:17,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:17,621 INFO L87 Difference]: Start difference. First operand 908 states and 1403 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:17,644 INFO L93 Difference]: Finished difference Result 2512 states and 3917 transitions. [2023-12-21 14:09:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:17,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-21 14:09:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:17,650 INFO L225 Difference]: With dead ends: 2512 [2023-12-21 14:09:17,650 INFO L226 Difference]: Without dead ends: 1646 [2023-12-21 14:09:17,652 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 [2023-12-21 14:09:17,652 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 79 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 330 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 [2023-12-21 14:09:17,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 330 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2023-12-21 14:09:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1644. [2023-12-21 14:09:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1643 states have (on average 1.5453438831405966) internal successors, (2539), 1643 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2539 transitions. [2023-12-21 14:09:17,685 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2539 transitions. Word has length 76 [2023-12-21 14:09:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:17,686 INFO L495 AbstractCegarLoop]: Abstraction has 1644 states and 2539 transitions. [2023-12-21 14:09:17,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2539 transitions. [2023-12-21 14:09:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 14:09:17,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:17,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:17,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:09:17,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:17,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:17,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1230877810, now seen corresponding path program 1 times [2023-12-21 14:09:17,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:17,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566181190] [2023-12-21 14:09:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:17,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566181190] [2023-12-21 14:09:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566181190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:17,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:17,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:17,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032402606] [2023-12-21 14:09:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:17,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:17,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:17,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:17,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:17,932 INFO L87 Difference]: Start difference. First operand 1644 states and 2539 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:18,332 INFO L93 Difference]: Finished difference Result 20868 states and 32503 transitions. [2023-12-21 14:09:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:09:18,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-21 14:09:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:18,404 INFO L225 Difference]: With dead ends: 20868 [2023-12-21 14:09:18,404 INFO L226 Difference]: Without dead ends: 19266 [2023-12-21 14:09:18,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:09:18,420 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1770 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:18,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 2901 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19266 states. [2023-12-21 14:09:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19266 to 3244. [2023-12-21 14:09:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 3243 states have (on average 1.5328399629972247) internal successors, (4971), 3243 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 4971 transitions. [2023-12-21 14:09:18,682 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 4971 transitions. Word has length 77 [2023-12-21 14:09:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:18,682 INFO L495 AbstractCegarLoop]: Abstraction has 3244 states and 4971 transitions. [2023-12-21 14:09:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 4971 transitions. [2023-12-21 14:09:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 14:09:18,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:18,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:18,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:09:18,684 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:18,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash 835749454, now seen corresponding path program 1 times [2023-12-21 14:09:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:18,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127288898] [2023-12-21 14:09:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:18,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:18,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127288898] [2023-12-21 14:09:18,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127288898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:18,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:18,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:18,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761416293] [2023-12-21 14:09:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:18,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:18,788 INFO L87 Difference]: Start difference. First operand 3244 states and 4971 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:18,833 INFO L93 Difference]: Finished difference Result 9296 states and 14221 transitions. [2023-12-21 14:09:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:18,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-21 14:09:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:18,859 INFO L225 Difference]: With dead ends: 9296 [2023-12-21 14:09:18,860 INFO L226 Difference]: Without dead ends: 6094 [2023-12-21 14:09:18,864 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 [2023-12-21 14:09:18,865 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 69 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 260 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 [2023-12-21 14:09:18,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 260 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:18,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2023-12-21 14:09:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 6028. [2023-12-21 14:09:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 6027 states have (on average 1.5043968807035009) internal successors, (9067), 6027 states have internal predecessors, (9067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 9067 transitions. [2023-12-21 14:09:18,980 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 9067 transitions. Word has length 79 [2023-12-21 14:09:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:18,981 INFO L495 AbstractCegarLoop]: Abstraction has 6028 states and 9067 transitions. [2023-12-21 14:09:18,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 9067 transitions. [2023-12-21 14:09:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 14:09:18,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:18,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:18,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:09:18,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:18,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash 856752109, now seen corresponding path program 1 times [2023-12-21 14:09:18,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:18,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162287055] [2023-12-21 14:09:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:18,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:19,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:19,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162287055] [2023-12-21 14:09:19,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162287055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:19,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:19,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672320587] [2023-12-21 14:09:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:19,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:19,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:19,356 INFO L87 Difference]: Start difference. First operand 6028 states and 9067 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:19,619 INFO L93 Difference]: Finished difference Result 12016 states and 18093 transitions. [2023-12-21 14:09:19,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:19,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-21 14:09:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:19,634 INFO L225 Difference]: With dead ends: 12016 [2023-12-21 14:09:19,634 INFO L226 Difference]: Without dead ends: 6030 [2023-12-21 14:09:19,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:09:19,644 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 472 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:19,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 745 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2023-12-21 14:09:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 6028. [2023-12-21 14:09:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 6027 states have (on average 1.49377799900448) internal successors, (9003), 6027 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 9003 transitions. [2023-12-21 14:09:19,753 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 9003 transitions. Word has length 79 [2023-12-21 14:09:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:19,753 INFO L495 AbstractCegarLoop]: Abstraction has 6028 states and 9003 transitions. [2023-12-21 14:09:19,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 9003 transitions. [2023-12-21 14:09:19,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 14:09:19,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:19,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:19,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:09:19,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:19,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash 89483993, now seen corresponding path program 1 times [2023-12-21 14:09:19,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:19,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437717904] [2023-12-21 14:09:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:19,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:19,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:19,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437717904] [2023-12-21 14:09:19,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437717904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:19,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:19,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:19,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913677376] [2023-12-21 14:09:19,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:19,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:19,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:19,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:19,827 INFO L87 Difference]: Start difference. First operand 6028 states and 9003 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:19,866 INFO L93 Difference]: Finished difference Result 11795 states and 17777 transitions. [2023-12-21 14:09:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:19,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 14:09:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:19,882 INFO L225 Difference]: With dead ends: 11795 [2023-12-21 14:09:19,882 INFO L226 Difference]: Without dead ends: 8592 [2023-12-21 14:09:19,888 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 [2023-12-21 14:09:19,889 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 101 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 354 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 [2023-12-21 14:09:19,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 354 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:19,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2023-12-21 14:09:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 8590. [2023-12-21 14:09:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.491791826755152) internal successors, (12813), 8589 states have internal predecessors, (12813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12813 transitions. [2023-12-21 14:09:20,029 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12813 transitions. Word has length 80 [2023-12-21 14:09:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:20,030 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12813 transitions. [2023-12-21 14:09:20,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12813 transitions. [2023-12-21 14:09:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 14:09:20,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:20,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:20,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:09:20,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:20,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:20,031 INFO L85 PathProgramCache]: Analyzing trace with hash 787602291, now seen corresponding path program 1 times [2023-12-21 14:09:20,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:20,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559384667] [2023-12-21 14:09:20,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:20,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:20,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:20,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559384667] [2023-12-21 14:09:20,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559384667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:20,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:20,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:20,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811762659] [2023-12-21 14:09:20,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:20,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:20,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:20,125 INFO L87 Difference]: Start difference. First operand 8590 states and 12813 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:20,246 INFO L93 Difference]: Finished difference Result 17136 states and 25582 transitions. [2023-12-21 14:09:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:20,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 14:09:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:20,262 INFO L225 Difference]: With dead ends: 17136 [2023-12-21 14:09:20,263 INFO L226 Difference]: Without dead ends: 8590 [2023-12-21 14:09:20,274 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 [2023-12-21 14:09:20,275 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 388 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:20,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 115 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-21 14:09:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 8590. [2023-12-21 14:09:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.480614739783444) internal successors, (12717), 8589 states have internal predecessors, (12717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12717 transitions. [2023-12-21 14:09:20,457 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12717 transitions. Word has length 80 [2023-12-21 14:09:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:20,457 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12717 transitions. [2023-12-21 14:09:20,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12717 transitions. [2023-12-21 14:09:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 14:09:20,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:20,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:20,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:09:20,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:20,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:20,466 INFO L85 PathProgramCache]: Analyzing trace with hash 24738584, now seen corresponding path program 1 times [2023-12-21 14:09:20,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:20,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070160727] [2023-12-21 14:09:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:20,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:20,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:20,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070160727] [2023-12-21 14:09:20,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070160727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:20,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:20,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:20,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924112523] [2023-12-21 14:09:20,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:20,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:20,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:20,577 INFO L87 Difference]: Start difference. First operand 8590 states and 12717 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:20,688 INFO L93 Difference]: Finished difference Result 17136 states and 25390 transitions. [2023-12-21 14:09:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:20,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 14:09:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:20,703 INFO L225 Difference]: With dead ends: 17136 [2023-12-21 14:09:20,704 INFO L226 Difference]: Without dead ends: 8590 [2023-12-21 14:09:20,713 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 [2023-12-21 14:09:20,714 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 359 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:20,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 131 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-21 14:09:20,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 8590. [2023-12-21 14:09:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.4694376528117359) internal successors, (12621), 8589 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12621 transitions. [2023-12-21 14:09:20,855 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12621 transitions. Word has length 80 [2023-12-21 14:09:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:20,856 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12621 transitions. [2023-12-21 14:09:20,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12621 transitions. [2023-12-21 14:09:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 14:09:20,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:20,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:20,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:09:20,857 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:20,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:20,858 INFO L85 PathProgramCache]: Analyzing trace with hash 890270973, now seen corresponding path program 1 times [2023-12-21 14:09:20,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:20,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517211441] [2023-12-21 14:09:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:20,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517211441] [2023-12-21 14:09:20,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517211441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:20,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:20,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:20,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453008528] [2023-12-21 14:09:20,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:20,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:20,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:20,958 INFO L87 Difference]: Start difference. First operand 8590 states and 12621 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:21,067 INFO L93 Difference]: Finished difference Result 17136 states and 25198 transitions. [2023-12-21 14:09:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:21,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 14:09:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:21,082 INFO L225 Difference]: With dead ends: 17136 [2023-12-21 14:09:21,082 INFO L226 Difference]: Without dead ends: 8590 [2023-12-21 14:09:21,092 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 [2023-12-21 14:09:21,092 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 369 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:21,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 123 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-21 14:09:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 8590. [2023-12-21 14:09:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.4582605658400278) internal successors, (12525), 8589 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12525 transitions. [2023-12-21 14:09:21,260 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12525 transitions. Word has length 80 [2023-12-21 14:09:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:21,260 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12525 transitions. [2023-12-21 14:09:21,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12525 transitions. [2023-12-21 14:09:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 14:09:21,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:21,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:21,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:09:21,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:21,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1018356280, now seen corresponding path program 1 times [2023-12-21 14:09:21,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:21,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027758425] [2023-12-21 14:09:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:21,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:21,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027758425] [2023-12-21 14:09:21,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027758425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:21,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:21,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:21,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6602023] [2023-12-21 14:09:21,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:21,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:21,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:21,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:21,339 INFO L87 Difference]: Start difference. First operand 8590 states and 12525 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:21,443 INFO L93 Difference]: Finished difference Result 17136 states and 25006 transitions. [2023-12-21 14:09:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:21,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 14:09:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:21,458 INFO L225 Difference]: With dead ends: 17136 [2023-12-21 14:09:21,458 INFO L226 Difference]: Without dead ends: 8590 [2023-12-21 14:09:21,468 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 [2023-12-21 14:09:21,469 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 392 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:21,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 107 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-21 14:09:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 8590. [2023-12-21 14:09:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.44708347886832) internal successors, (12429), 8589 states have internal predecessors, (12429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12429 transitions. [2023-12-21 14:09:21,596 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12429 transitions. Word has length 80 [2023-12-21 14:09:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:21,597 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12429 transitions. [2023-12-21 14:09:21,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12429 transitions. [2023-12-21 14:09:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 14:09:21,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:21,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:21,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:09:21,598 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:21,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:21,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1386627507, now seen corresponding path program 1 times [2023-12-21 14:09:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:21,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107551943] [2023-12-21 14:09:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:21,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:21,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:21,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107551943] [2023-12-21 14:09:21,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107551943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:21,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:21,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:09:21,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969128599] [2023-12-21 14:09:21,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:21,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:21,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:21,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:21,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:21,779 INFO L87 Difference]: Start difference. First operand 8590 states and 12429 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:21,862 INFO L93 Difference]: Finished difference Result 15484 states and 22340 transitions. [2023-12-21 14:09:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:09:21,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 14:09:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:21,891 INFO L225 Difference]: With dead ends: 15484 [2023-12-21 14:09:21,891 INFO L226 Difference]: Without dead ends: 15482 [2023-12-21 14:09:21,897 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 [2023-12-21 14:09:21,897 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 204 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 690 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 [2023-12-21 14:09:21,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 690 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15482 states. [2023-12-21 14:09:22,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15482 to 8846. [2023-12-21 14:09:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8846 states, 8845 states have (on average 1.4305257207461843) internal successors, (12653), 8845 states have internal predecessors, (12653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12653 transitions. [2023-12-21 14:09:22,053 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12653 transitions. Word has length 80 [2023-12-21 14:09:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:22,053 INFO L495 AbstractCegarLoop]: Abstraction has 8846 states and 12653 transitions. [2023-12-21 14:09:22,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12653 transitions. [2023-12-21 14:09:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 14:09:22,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:22,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:22,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:09:22,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:22,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:22,058 INFO L85 PathProgramCache]: Analyzing trace with hash 547687804, now seen corresponding path program 1 times [2023-12-21 14:09:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:22,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45695948] [2023-12-21 14:09:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 14:09:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45695948] [2023-12-21 14:09:22,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45695948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:22,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:22,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:22,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981620589] [2023-12-21 14:09:22,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:22,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:22,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:22,228 INFO L87 Difference]: Start difference. First operand 8846 states and 12653 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:22,594 INFO L93 Difference]: Finished difference Result 63292 states and 90580 transitions. [2023-12-21 14:09:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 111 [2023-12-21 14:09:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:22,702 INFO L225 Difference]: With dead ends: 63292 [2023-12-21 14:09:22,702 INFO L226 Difference]: Without dead ends: 54490 [2023-12-21 14:09:22,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:22,714 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1549 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:22,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1129 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54490 states. [2023-12-21 14:09:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54490 to 17646. [2023-12-21 14:09:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17646 states, 17645 states have (on average 1.4261830546897138) internal successors, (25165), 17645 states have internal predecessors, (25165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17646 states to 17646 states and 25165 transitions. [2023-12-21 14:09:23,234 INFO L78 Accepts]: Start accepts. Automaton has 17646 states and 25165 transitions. Word has length 111 [2023-12-21 14:09:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:23,234 INFO L495 AbstractCegarLoop]: Abstraction has 17646 states and 25165 transitions. [2023-12-21 14:09:23,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 17646 states and 25165 transitions. [2023-12-21 14:09:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 14:09:23,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:23,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:23,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:09:23,240 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:23,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1176854258, now seen corresponding path program 1 times [2023-12-21 14:09:23,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:23,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464348675] [2023-12-21 14:09:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 14:09:23,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:23,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464348675] [2023-12-21 14:09:23,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464348675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:23,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:23,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:23,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923622417] [2023-12-21 14:09:23,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:23,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:23,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:23,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:23,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:23,415 INFO L87 Difference]: Start difference. First operand 17646 states and 25165 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:23,773 INFO L93 Difference]: Finished difference Result 72092 states and 103092 transitions. [2023-12-21 14:09:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 111 [2023-12-21 14:09:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:23,877 INFO L225 Difference]: With dead ends: 72092 [2023-12-21 14:09:23,878 INFO L226 Difference]: Without dead ends: 63290 [2023-12-21 14:09:23,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:23,911 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1438 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:23,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 1194 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63290 states. [2023-12-21 14:09:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63290 to 30862. [2023-12-21 14:09:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30862 states, 30861 states have (on average 1.420984413985289) internal successors, (43853), 30861 states have internal predecessors, (43853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30862 states to 30862 states and 43853 transitions. [2023-12-21 14:09:24,760 INFO L78 Accepts]: Start accepts. Automaton has 30862 states and 43853 transitions. Word has length 111 [2023-12-21 14:09:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:24,762 INFO L495 AbstractCegarLoop]: Abstraction has 30862 states and 43853 transitions. [2023-12-21 14:09:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:24,762 INFO L276 IsEmpty]: Start isEmpty. Operand 30862 states and 43853 transitions. [2023-12-21 14:09:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 14:09:24,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:24,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:24,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:09:24,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:24,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:24,769 INFO L85 PathProgramCache]: Analyzing trace with hash -22908152, now seen corresponding path program 1 times [2023-12-21 14:09:24,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:24,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75688006] [2023-12-21 14:09:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:24,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 14:09:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:24,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75688006] [2023-12-21 14:09:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75688006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:24,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058155057] [2023-12-21 14:09:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:24,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:24,938 INFO L87 Difference]: Start difference. First operand 30862 states and 43853 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:25,400 INFO L93 Difference]: Finished difference Result 80892 states and 115604 transitions. [2023-12-21 14:09:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:25,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 111 [2023-12-21 14:09:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:25,532 INFO L225 Difference]: With dead ends: 80892 [2023-12-21 14:09:25,533 INFO L226 Difference]: Without dead ends: 72090 [2023-12-21 14:09:25,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:25,573 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1272 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:25,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1250 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72090 states. [2023-12-21 14:09:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72090 to 39662. [2023-12-21 14:09:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39662 states, 39661 states have (on average 1.4211694107561585) internal successors, (56365), 39661 states have internal predecessors, (56365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39662 states to 39662 states and 56365 transitions. [2023-12-21 14:09:26,375 INFO L78 Accepts]: Start accepts. Automaton has 39662 states and 56365 transitions. Word has length 111 [2023-12-21 14:09:26,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:26,375 INFO L495 AbstractCegarLoop]: Abstraction has 39662 states and 56365 transitions. [2023-12-21 14:09:26,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand 39662 states and 56365 transitions. [2023-12-21 14:09:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 14:09:26,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:26,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:26,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:09:26,382 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:26,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash -880808830, now seen corresponding path program 1 times [2023-12-21 14:09:26,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:26,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067787924] [2023-12-21 14:09:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 14:09:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067787924] [2023-12-21 14:09:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067787924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:26,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:26,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171179554] [2023-12-21 14:09:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:26,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:26,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:26,742 INFO L87 Difference]: Start difference. First operand 39662 states and 56365 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:27,141 INFO L93 Difference]: Finished difference Result 89692 states and 128116 transitions. [2023-12-21 14:09:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:27,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 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 111 [2023-12-21 14:09:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:27,261 INFO L225 Difference]: With dead ends: 89692 [2023-12-21 14:09:27,261 INFO L226 Difference]: Without dead ends: 80890 [2023-12-21 14:09:27,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:27,304 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1269 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:27,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 1328 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80890 states. [2023-12-21 14:09:28,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80890 to 48462. [2023-12-21 14:09:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48462 states, 48461 states have (on average 1.421287220651658) internal successors, (68877), 48461 states have internal predecessors, (68877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48462 states to 48462 states and 68877 transitions. [2023-12-21 14:09:28,190 INFO L78 Accepts]: Start accepts. Automaton has 48462 states and 68877 transitions. Word has length 111 [2023-12-21 14:09:28,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:28,190 INFO L495 AbstractCegarLoop]: Abstraction has 48462 states and 68877 transitions. [2023-12-21 14:09:28,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 48462 states and 68877 transitions. [2023-12-21 14:09:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 14:09:28,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:28,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:28,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:09:28,197 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:28,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:28,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1771842058, now seen corresponding path program 1 times [2023-12-21 14:09:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809845986] [2023-12-21 14:09:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 14:09:28,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:28,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809845986] [2023-12-21 14:09:28,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809845986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:28,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:28,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:28,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243106222] [2023-12-21 14:09:28,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:28,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:28,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:28,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:28,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:28,354 INFO L87 Difference]: Start difference. First operand 48462 states and 68877 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:28,880 INFO L93 Difference]: Finished difference Result 98492 states and 140628 transitions. [2023-12-21 14:09:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:28,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 111 [2023-12-21 14:09:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:28,997 INFO L225 Difference]: With dead ends: 98492 [2023-12-21 14:09:28,997 INFO L226 Difference]: Without dead ends: 89690 [2023-12-21 14:09:29,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:29,030 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1373 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:29,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1438 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89690 states. [2023-12-21 14:09:30,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89690 to 57262. [2023-12-21 14:09:30,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57262 states, 57261 states have (on average 1.421368819964723) internal successors, (81389), 57261 states have internal predecessors, (81389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57262 states to 57262 states and 81389 transitions. [2023-12-21 14:09:30,131 INFO L78 Accepts]: Start accepts. Automaton has 57262 states and 81389 transitions. Word has length 111 [2023-12-21 14:09:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:30,131 INFO L495 AbstractCegarLoop]: Abstraction has 57262 states and 81389 transitions. [2023-12-21 14:09:30,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 57262 states and 81389 transitions. [2023-12-21 14:09:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 14:09:30,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:30,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:30,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:09:30,139 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:30,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:30,139 INFO L85 PathProgramCache]: Analyzing trace with hash -721790003, now seen corresponding path program 1 times [2023-12-21 14:09:30,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:30,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030646838] [2023-12-21 14:09:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:30,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:09:30,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:30,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030646838] [2023-12-21 14:09:30,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030646838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:30,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:30,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017135272] [2023-12-21 14:09:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:30,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:30,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:30,292 INFO L87 Difference]: Start difference. First operand 57262 states and 81389 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:30,970 INFO L93 Difference]: Finished difference Result 101724 states and 145332 transitions. [2023-12-21 14:09:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:30,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 112 [2023-12-21 14:09:30,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:31,083 INFO L225 Difference]: With dead ends: 101724 [2023-12-21 14:09:31,083 INFO L226 Difference]: Without dead ends: 95706 [2023-12-21 14:09:31,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:31,115 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1368 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:31,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1332 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95706 states. [2023-12-21 14:09:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95706 to 63278. [2023-12-21 14:09:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63278 states, 63277 states have (on average 1.422776048169161) internal successors, (90029), 63277 states have internal predecessors, (90029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63278 states to 63278 states and 90029 transitions. [2023-12-21 14:09:32,415 INFO L78 Accepts]: Start accepts. Automaton has 63278 states and 90029 transitions. Word has length 112 [2023-12-21 14:09:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:32,415 INFO L495 AbstractCegarLoop]: Abstraction has 63278 states and 90029 transitions. [2023-12-21 14:09:32,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 63278 states and 90029 transitions. [2023-12-21 14:09:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 14:09:32,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:32,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:09:32,424 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:32,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1311967558, now seen corresponding path program 1 times [2023-12-21 14:09:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127905545] [2023-12-21 14:09:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127905545] [2023-12-21 14:09:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127905545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:09:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134183570] [2023-12-21 14:09:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:33,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:09:33,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:09:33,008 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) [2023-12-21 14:09:33,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 14:09:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:33,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 14:09:33,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:09:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:09:33,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:09:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:09:33,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134183570] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:09:33,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:09:33,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-21 14:09:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419274189] [2023-12-21 14:09:33,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:09:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 14:09:33,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 14:09:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:09:33,838 INFO L87 Difference]: Start difference. First operand 63278 states and 90029 transitions. Second operand has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:47,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:47,296 INFO L93 Difference]: Finished difference Result 1150578 states and 1611551 transitions. [2023-12-21 14:09:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-21 14:09:47,297 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 states have internal predecessors, (326), 0 states have call successors, (0), 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 113 [2023-12-21 14:09:47,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:49,243 INFO L225 Difference]: With dead ends: 1150578 [2023-12-21 14:09:49,244 INFO L226 Difference]: Without dead ends: 1087344 [2023-12-21 14:09:49,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29340 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=8236, Invalid=53516, Unknown=0, NotChecked=0, Total=61752 [2023-12-21 14:09:49,501 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 10895 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 3175 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10895 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:49,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10895 Valid, 2669 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3175 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 14:09:50,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087344 states. [2023-12-21 14:09:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087344 to 441046. [2023-12-21 14:09:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441046 states, 441045 states have (on average 1.3952249770431588) internal successors, (615357), 441045 states have internal predecessors, (615357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441046 states to 441046 states and 615357 transitions. [2023-12-21 14:09:59,929 INFO L78 Accepts]: Start accepts. Automaton has 441046 states and 615357 transitions. Word has length 113 [2023-12-21 14:09:59,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:59,930 INFO L495 AbstractCegarLoop]: Abstraction has 441046 states and 615357 transitions. [2023-12-21 14:09:59,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 441046 states and 615357 transitions. [2023-12-21 14:09:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 14:09:59,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:59,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:59,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 14:10:00,150 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,SelfDestructingSolverStorable20 [2023-12-21 14:10:00,151 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:00,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash -350314400, now seen corresponding path program 1 times [2023-12-21 14:10:00,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:00,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650177924] [2023-12-21 14:10:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:00,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650177924] [2023-12-21 14:10:00,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650177924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:00,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:00,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851543224] [2023-12-21 14:10:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:00,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:00,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:00,264 INFO L87 Difference]: Start difference. First operand 441046 states and 615357 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:03,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:03,420 INFO L93 Difference]: Finished difference Result 780530 states and 1088408 transitions. [2023-12-21 14:10:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:03,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-21 14:10:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:04,034 INFO L225 Difference]: With dead ends: 780530 [2023-12-21 14:10:04,034 INFO L226 Difference]: Without dead ends: 339528 [2023-12-21 14:10:04,627 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 [2023-12-21 14:10:04,639 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 69 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 336 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 [2023-12-21 14:10:04,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 336 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339528 states. [2023-12-21 14:10:08,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339528 to 339526. [2023-12-21 14:10:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339526 states, 339525 states have (on average 1.3808585523893675) internal successors, (468836), 339525 states have internal predecessors, (468836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339526 states to 339526 states and 468836 transitions. [2023-12-21 14:10:10,149 INFO L78 Accepts]: Start accepts. Automaton has 339526 states and 468836 transitions. Word has length 113 [2023-12-21 14:10:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:10,149 INFO L495 AbstractCegarLoop]: Abstraction has 339526 states and 468836 transitions. [2023-12-21 14:10:10,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 339526 states and 468836 transitions. [2023-12-21 14:10:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 14:10:10,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:10,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:10,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:10:10,157 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:10,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -547774863, now seen corresponding path program 1 times [2023-12-21 14:10:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481805262] [2023-12-21 14:10:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:11,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481805262] [2023-12-21 14:10:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481805262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:10:11,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84029102] [2023-12-21 14:10:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:11,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:10:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:10:11,406 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) [2023-12-21 14:10:11,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 14:10:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:11,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 14:10:11,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:10:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:12,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:10:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:13,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84029102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:10:13,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:10:13,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2023-12-21 14:10:13,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064729368] [2023-12-21 14:10:13,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:10:13,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 14:10:13,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 14:10:13,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:10:13,527 INFO L87 Difference]: Start difference. First operand 339526 states and 468836 transitions. Second operand has 25 states, 25 states have (on average 12.32) internal successors, (308), 24 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:23,475 INFO L93 Difference]: Finished difference Result 2470976 states and 3353405 transitions. [2023-12-21 14:10:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-21 14:10:23,475 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.32) internal successors, (308), 24 states have internal predecessors, (308), 0 states have call successors, (0), 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 114 [2023-12-21 14:10:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:27,635 INFO L225 Difference]: With dead ends: 2470976 [2023-12-21 14:10:27,635 INFO L226 Difference]: Without dead ends: 2157051 [2023-12-21 14:10:28,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2009, Invalid=6733, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 14:10:28,496 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 3674 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3674 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:28,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3674 Valid, 2009 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 14:10:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157051 states. [2023-12-21 14:10:50,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157051 to 790548. [2023-12-21 14:10:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790548 states, 790547 states have (on average 1.3752566261082517) internal successors, (1087205), 790547 states have internal predecessors, (1087205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790548 states to 790548 states and 1087205 transitions. [2023-12-21 14:10:54,305 INFO L78 Accepts]: Start accepts. Automaton has 790548 states and 1087205 transitions. Word has length 114 [2023-12-21 14:10:54,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:54,306 INFO L495 AbstractCegarLoop]: Abstraction has 790548 states and 1087205 transitions. [2023-12-21 14:10:54,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.32) internal successors, (308), 24 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 790548 states and 1087205 transitions. [2023-12-21 14:10:54,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 14:10:54,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:54,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:54,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 14:10:54,533 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,SelfDestructingSolverStorable22 [2023-12-21 14:10:54,533 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:54,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:54,534 INFO L85 PathProgramCache]: Analyzing trace with hash -755077367, now seen corresponding path program 1 times [2023-12-21 14:10:54,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:54,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313761670] [2023-12-21 14:10:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:54,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:55,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313761670] [2023-12-21 14:10:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313761670] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:10:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293373739] [2023-12-21 14:10:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:55,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:10:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:10:55,176 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) [2023-12-21 14:10:55,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 14:10:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:55,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 14:10:55,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:10:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:55,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:10:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:56,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293373739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:10:56,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:10:56,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-21 14:10:56,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092670236] [2023-12-21 14:10:56,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:10:56,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 14:10:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:56,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 14:10:56,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2023-12-21 14:10:56,761 INFO L87 Difference]: Start difference. First operand 790548 states and 1087205 transitions. Second operand has 23 states, 23 states have (on average 12.608695652173912) internal successors, (290), 22 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)