/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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:32:40,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:32:40,704 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:32:40,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:32:40,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:32:40,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:32:40,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:32:40,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:32:40,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:32:40,740 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:32:40,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:32:40,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:32:40,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:32:40,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:32:40,741 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:32:40,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:32:40,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:32:40,741 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:32:40,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:32:40,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:32:40,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:32:40,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:32:40,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:32:40,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:32:40,744 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:32:40,744 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:32:40,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:32:40,744 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:32:40,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:32:40,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:32:40,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:32:40,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:32:40,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:32:40,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:32:40,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:32:40,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:32:40,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:32:40,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:32:40,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:32:40,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:32:40,747 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:32:40,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:32:40,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:32:40,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:32:40,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:32:40,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:32:40,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:32:40,968 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:32:40,968 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:32:40,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 06:32:42,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:32:42,291 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:32:42,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 06:32:42,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efcad8056/cce495d9fb4d4282a9f7049d9d60df6a/FLAGf205de05e [2023-12-16 06:32:42,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efcad8056/cce495d9fb4d4282a9f7049d9d60df6a [2023-12-16 06:32:42,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:32:42,329 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:32:42,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:32:42,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:32:42,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:32:42,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:42,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbf1d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42, skipping insertion in model container [2023-12-16 06:32:42,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:42,382 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:32:42,646 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15440,15453] [2023-12-16 06:32:42,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:32:42,727 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:32:42,801 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15440,15453] [2023-12-16 06:32:42,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:32:42,874 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:32:42,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42 WrapperNode [2023-12-16 06:32:42,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:32:42,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:32:42,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:32:42,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:32:42,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:42,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:42,990 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1332 [2023-12-16 06:32:42,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:32:42,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:32:42,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:32:42,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:32:43,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,069 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 06:32:43,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,093 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,099 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:32:43,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:32:43,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:32:43,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:32:43,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (1/1) ... [2023-12-16 06:32:43,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:32:43,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:32:43,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 06:32:43,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 06:32:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:32:43,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:32:43,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:32:43,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:32:43,323 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:32:43,325 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:32:44,099 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:32:44,142 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:32:44,142 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 06:32:44,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:32:44 BoogieIcfgContainer [2023-12-16 06:32:44,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:32:44,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:32:44,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:32:44,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:32:44,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:32:42" (1/3) ... [2023-12-16 06:32:44,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da06bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:32:44, skipping insertion in model container [2023-12-16 06:32:44,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:32:42" (2/3) ... [2023-12-16 06:32:44,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da06bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:32:44, skipping insertion in model container [2023-12-16 06:32:44,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:32:44" (3/3) ... [2023-12-16 06:32:44,149 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 06:32:44,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:32:44,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:32:44,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:32:44,220 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;@580a7a31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:32:44,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:32:44,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 329 states, 327 states have (on average 1.7798165137614679) internal successors, (582), 328 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 06:32:44,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:44,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:44,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:44,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1440445336, now seen corresponding path program 1 times [2023-12-16 06:32:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:44,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640345479] [2023-12-16 06:32:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:44,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:44,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:44,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640345479] [2023-12-16 06:32:44,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640345479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:44,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:44,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:44,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061670083] [2023-12-16 06:32:44,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:44,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:32:44,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:32:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:32:44,806 INFO L87 Difference]: Start difference. First operand has 329 states, 327 states have (on average 1.7798165137614679) internal successors, (582), 328 states have internal predecessors, (582), 0 states have call successors, (0), 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 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:44,962 INFO L93 Difference]: Finished difference Result 636 states and 1108 transitions. [2023-12-16 06:32:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:32:44,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2023-12-16 06:32:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:44,979 INFO L225 Difference]: With dead ends: 636 [2023-12-16 06:32:44,979 INFO L226 Difference]: Without dead ends: 522 [2023-12-16 06:32:44,983 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 [2023-12-16 06:32:44,985 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 381 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:44,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 931 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:32:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-16 06:32:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 520. [2023-12-16 06:32:45,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.4932562620423893) internal successors, (775), 519 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 775 transitions. [2023-12-16 06:32:45,051 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 775 transitions. Word has length 151 [2023-12-16 06:32:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:45,054 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 775 transitions. [2023-12-16 06:32:45,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 775 transitions. [2023-12-16 06:32:45,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 06:32:45,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:45,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:45,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:32:45,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:45,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:45,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2022320357, now seen corresponding path program 1 times [2023-12-16 06:32:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:45,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347150336] [2023-12-16 06:32:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:45,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:45,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:45,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347150336] [2023-12-16 06:32:45,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347150336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:45,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956641282] [2023-12-16 06:32:45,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:45,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:32:45,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:32:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:32:45,464 INFO L87 Difference]: Start difference. First operand 520 states and 775 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:45,521 INFO L93 Difference]: Finished difference Result 1527 states and 2268 transitions. [2023-12-16 06:32:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:32:45,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2023-12-16 06:32:45,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:45,526 INFO L225 Difference]: With dead ends: 1527 [2023-12-16 06:32:45,526 INFO L226 Difference]: Without dead ends: 1015 [2023-12-16 06:32:45,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:32:45,532 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1049 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:45,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1195 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-12-16 06:32:45,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1013. [2023-12-16 06:32:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 1.4782608695652173) internal successors, (1496), 1012 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1496 transitions. [2023-12-16 06:32:45,562 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1496 transitions. Word has length 151 [2023-12-16 06:32:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:45,563 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1496 transitions. [2023-12-16 06:32:45,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1496 transitions. [2023-12-16 06:32:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 06:32:45,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:45,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:45,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:32:45,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:45,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:45,565 INFO L85 PathProgramCache]: Analyzing trace with hash -439480105, now seen corresponding path program 1 times [2023-12-16 06:32:45,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:45,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362178005] [2023-12-16 06:32:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:45,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:45,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:45,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362178005] [2023-12-16 06:32:45,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362178005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:45,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426940888] [2023-12-16 06:32:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:32:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:32:45,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:32:45,635 INFO L87 Difference]: Start difference. First operand 1013 states and 1496 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:45,664 INFO L93 Difference]: Finished difference Result 3003 states and 4428 transitions. [2023-12-16 06:32:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:32:45,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-16 06:32:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:45,673 INFO L225 Difference]: With dead ends: 3003 [2023-12-16 06:32:45,673 INFO L226 Difference]: Without dead ends: 2017 [2023-12-16 06:32:45,677 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 [2023-12-16 06:32:45,679 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 471 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:45,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1216 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2023-12-16 06:32:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1015. [2023-12-16 06:32:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 1.4773175542406312) internal successors, (1498), 1014 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1498 transitions. [2023-12-16 06:32:45,717 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1498 transitions. Word has length 152 [2023-12-16 06:32:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:45,722 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1498 transitions. [2023-12-16 06:32:45,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1498 transitions. [2023-12-16 06:32:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-16 06:32:45,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:45,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:45,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:32:45,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:45,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash -357941146, now seen corresponding path program 1 times [2023-12-16 06:32:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:45,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768828299] [2023-12-16 06:32:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:46,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768828299] [2023-12-16 06:32:46,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768828299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:46,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:46,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:46,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918598846] [2023-12-16 06:32:46,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:46,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:32:46,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:32:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:32:46,040 INFO L87 Difference]: Start difference. First operand 1015 states and 1498 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:46,118 INFO L93 Difference]: Finished difference Result 2933 states and 4308 transitions. [2023-12-16 06:32:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:32:46,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-16 06:32:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:46,125 INFO L225 Difference]: With dead ends: 2933 [2023-12-16 06:32:46,125 INFO L226 Difference]: Without dead ends: 1947 [2023-12-16 06:32:46,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:32:46,133 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 951 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:46,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1232 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:46,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2023-12-16 06:32:46,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1945. [2023-12-16 06:32:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1944 states have (on average 1.4573045267489713) internal successors, (2833), 1944 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2833 transitions. [2023-12-16 06:32:46,168 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2833 transitions. Word has length 153 [2023-12-16 06:32:46,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:46,168 INFO L495 AbstractCegarLoop]: Abstraction has 1945 states and 2833 transitions. [2023-12-16 06:32:46,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2833 transitions. [2023-12-16 06:32:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-16 06:32:46,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:46,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:46,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:32:46,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:46,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash 916719672, now seen corresponding path program 1 times [2023-12-16 06:32:46,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:46,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142855748] [2023-12-16 06:32:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:46,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142855748] [2023-12-16 06:32:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142855748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:46,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490217491] [2023-12-16 06:32:46,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:32:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:32:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:32:46,244 INFO L87 Difference]: Start difference. First operand 1945 states and 2833 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:46,274 INFO L93 Difference]: Finished difference Result 5761 states and 8381 transitions. [2023-12-16 06:32:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:32:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-16 06:32:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:46,286 INFO L225 Difference]: With dead ends: 5761 [2023-12-16 06:32:46,286 INFO L226 Difference]: Without dead ends: 3859 [2023-12-16 06:32:46,290 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 [2023-12-16 06:32:46,290 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 457 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:46,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1082 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2023-12-16 06:32:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 1949. [2023-12-16 06:32:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1948 states have (on average 1.4563655030800822) internal successors, (2837), 1948 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2837 transitions. [2023-12-16 06:32:46,339 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2837 transitions. Word has length 154 [2023-12-16 06:32:46,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:46,341 INFO L495 AbstractCegarLoop]: Abstraction has 1949 states and 2837 transitions. [2023-12-16 06:32:46,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2837 transitions. [2023-12-16 06:32:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-16 06:32:46,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:46,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:46,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:32:46,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:46,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:46,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1506950247, now seen corresponding path program 1 times [2023-12-16 06:32:46,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:46,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838991519] [2023-12-16 06:32:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:46,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:46,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:46,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838991519] [2023-12-16 06:32:46,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838991519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:46,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817751878] [2023-12-16 06:32:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:46,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:32:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:32:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:32:46,593 INFO L87 Difference]: Start difference. First operand 1949 states and 2837 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:46,677 INFO L93 Difference]: Finished difference Result 5637 states and 8173 transitions. [2023-12-16 06:32:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:32:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-16 06:32:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:46,687 INFO L225 Difference]: With dead ends: 5637 [2023-12-16 06:32:46,687 INFO L226 Difference]: Without dead ends: 3735 [2023-12-16 06:32:46,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:32:46,691 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 949 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:46,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1217 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:32:46,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2023-12-16 06:32:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3733. [2023-12-16 06:32:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.4359592711682745) internal successors, (5359), 3732 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5359 transitions. [2023-12-16 06:32:46,770 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5359 transitions. Word has length 155 [2023-12-16 06:32:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:46,771 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5359 transitions. [2023-12-16 06:32:46,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5359 transitions. [2023-12-16 06:32:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-16 06:32:46,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:46,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:46,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:32:46,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:46,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:46,776 INFO L85 PathProgramCache]: Analyzing trace with hash 70163481, now seen corresponding path program 1 times [2023-12-16 06:32:46,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:46,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746338119] [2023-12-16 06:32:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:46,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:46,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:46,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746338119] [2023-12-16 06:32:46,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746338119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:46,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:46,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969547139] [2023-12-16 06:32:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:32:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:32:46,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:32:46,835 INFO L87 Difference]: Start difference. First operand 3733 states and 5359 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:46,879 INFO L93 Difference]: Finished difference Result 10769 states and 15501 transitions. [2023-12-16 06:32:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:32:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-16 06:32:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:46,899 INFO L225 Difference]: With dead ends: 10769 [2023-12-16 06:32:46,900 INFO L226 Difference]: Without dead ends: 7375 [2023-12-16 06:32:46,906 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 [2023-12-16 06:32:46,907 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 443 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:46,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1392 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2023-12-16 06:32:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 3741. [2023-12-16 06:32:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 1.4350267379679145) internal successors, (5367), 3740 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 5367 transitions. [2023-12-16 06:32:47,014 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 5367 transitions. Word has length 156 [2023-12-16 06:32:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:47,014 INFO L495 AbstractCegarLoop]: Abstraction has 3741 states and 5367 transitions. [2023-12-16 06:32:47,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 5367 transitions. [2023-12-16 06:32:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-16 06:32:47,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:47,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:47,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:32:47,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:47,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1340167208, now seen corresponding path program 1 times [2023-12-16 06:32:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:47,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246593269] [2023-12-16 06:32:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:47,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246593269] [2023-12-16 06:32:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246593269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:47,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:47,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:32:47,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014211224] [2023-12-16 06:32:47,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:47,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:32:47,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:32:47,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:32:47,251 INFO L87 Difference]: Start difference. First operand 3741 states and 5367 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:47,358 INFO L93 Difference]: Finished difference Result 10855 states and 15512 transitions. [2023-12-16 06:32:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:32:47,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-16 06:32:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:47,386 INFO L225 Difference]: With dead ends: 10855 [2023-12-16 06:32:47,386 INFO L226 Difference]: Without dead ends: 7201 [2023-12-16 06:32:47,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:32:47,390 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1417 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:47,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 1224 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2023-12-16 06:32:47,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 7199. [2023-12-16 06:32:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7199 states, 7198 states have (on average 1.4148374548485692) internal successors, (10184), 7198 states have internal predecessors, (10184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7199 states to 7199 states and 10184 transitions. [2023-12-16 06:32:47,504 INFO L78 Accepts]: Start accepts. Automaton has 7199 states and 10184 transitions. Word has length 157 [2023-12-16 06:32:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:47,505 INFO L495 AbstractCegarLoop]: Abstraction has 7199 states and 10184 transitions. [2023-12-16 06:32:47,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7199 states and 10184 transitions. [2023-12-16 06:32:47,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-16 06:32:47,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:47,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:47,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:32:47,512 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:47,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1317970712, now seen corresponding path program 1 times [2023-12-16 06:32:47,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:47,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217100992] [2023-12-16 06:32:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:47,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:47,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:47,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217100992] [2023-12-16 06:32:47,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217100992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:47,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:47,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:32:47,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264477425] [2023-12-16 06:32:47,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:47,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:32:47,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:32:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:32:47,720 INFO L87 Difference]: Start difference. First operand 7199 states and 10184 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:47,769 INFO L93 Difference]: Finished difference Result 12623 states and 17844 transitions. [2023-12-16 06:32:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:32:47,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-16 06:32:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:47,778 INFO L225 Difference]: With dead ends: 12623 [2023-12-16 06:32:47,778 INFO L226 Difference]: Without dead ends: 5497 [2023-12-16 06:32:47,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:32:47,787 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 65 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:47,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1473 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:47,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5497 states. [2023-12-16 06:32:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5497 to 5497. [2023-12-16 06:32:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5497 states, 5496 states have (on average 1.4122998544395924) internal successors, (7762), 5496 states have internal predecessors, (7762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 7762 transitions. [2023-12-16 06:32:47,871 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 7762 transitions. Word has length 157 [2023-12-16 06:32:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:47,871 INFO L495 AbstractCegarLoop]: Abstraction has 5497 states and 7762 transitions. [2023-12-16 06:32:47,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 7762 transitions. [2023-12-16 06:32:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-16 06:32:47,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:47,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:47,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:32:47,877 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:47,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1232985335, now seen corresponding path program 1 times [2023-12-16 06:32:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:47,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140823602] [2023-12-16 06:32:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:47,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140823602] [2023-12-16 06:32:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140823602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:47,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801363044] [2023-12-16 06:32:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:32:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:32:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:32:47,925 INFO L87 Difference]: Start difference. First operand 5497 states and 7762 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:48,015 INFO L93 Difference]: Finished difference Result 12145 states and 17704 transitions. [2023-12-16 06:32:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:32:48,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2023-12-16 06:32:48,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:48,026 INFO L225 Difference]: With dead ends: 12145 [2023-12-16 06:32:48,026 INFO L226 Difference]: Without dead ends: 7259 [2023-12-16 06:32:48,030 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 [2023-12-16 06:32:48,031 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 233 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:48,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 974 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:32:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7259 states. [2023-12-16 06:32:48,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7259 to 7113. [2023-12-16 06:32:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7113 states, 7112 states have (on average 1.4580989876265467) internal successors, (10370), 7112 states have internal predecessors, (10370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 10370 transitions. [2023-12-16 06:32:48,136 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 10370 transitions. Word has length 158 [2023-12-16 06:32:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:48,137 INFO L495 AbstractCegarLoop]: Abstraction has 7113 states and 10370 transitions. [2023-12-16 06:32:48,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 10370 transitions. [2023-12-16 06:32:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-16 06:32:48,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:48,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:48,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:32:48,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:48,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1198029479, now seen corresponding path program 1 times [2023-12-16 06:32:48,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:48,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754123536] [2023-12-16 06:32:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:48,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:48,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754123536] [2023-12-16 06:32:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754123536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:48,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:48,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:32:48,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586507249] [2023-12-16 06:32:48,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:48,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:32:48,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:32:48,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:32:48,561 INFO L87 Difference]: Start difference. First operand 7113 states and 10370 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:49,200 INFO L93 Difference]: Finished difference Result 31489 states and 47925 transitions. [2023-12-16 06:32:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 06:32:49,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-16 06:32:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:49,248 INFO L225 Difference]: With dead ends: 31489 [2023-12-16 06:32:49,248 INFO L226 Difference]: Without dead ends: 25125 [2023-12-16 06:32:49,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-16 06:32:49,264 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 4642 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4642 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:49,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4642 Valid, 2394 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:32:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25125 states. [2023-12-16 06:32:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25125 to 17213. [2023-12-16 06:32:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17213 states, 17212 states have (on average 1.4880316058563792) internal successors, (25612), 17212 states have internal predecessors, (25612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17213 states to 17213 states and 25612 transitions. [2023-12-16 06:32:49,617 INFO L78 Accepts]: Start accepts. Automaton has 17213 states and 25612 transitions. Word has length 161 [2023-12-16 06:32:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:49,617 INFO L495 AbstractCegarLoop]: Abstraction has 17213 states and 25612 transitions. [2023-12-16 06:32:49,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 17213 states and 25612 transitions. [2023-12-16 06:32:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-16 06:32:49,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:49,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:32:49,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:49,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1392266336, now seen corresponding path program 1 times [2023-12-16 06:32:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:49,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651333052] [2023-12-16 06:32:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:49,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:49,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651333052] [2023-12-16 06:32:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651333052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:49,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:49,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:32:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272611109] [2023-12-16 06:32:49,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:49,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:32:49,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:49,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:32:49,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:32:49,951 INFO L87 Difference]: Start difference. First operand 17213 states and 25612 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:50,082 INFO L93 Difference]: Finished difference Result 33257 states and 51098 transitions. [2023-12-16 06:32:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:32:50,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-16 06:32:50,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:50,116 INFO L225 Difference]: With dead ends: 33257 [2023-12-16 06:32:50,116 INFO L226 Difference]: Without dead ends: 21375 [2023-12-16 06:32:50,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:32:50,135 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 775 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:50,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 959 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21375 states. [2023-12-16 06:32:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21375 to 21373. [2023-12-16 06:32:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21373 states, 21372 states have (on average 1.4984091334456298) internal successors, (32024), 21372 states have internal predecessors, (32024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21373 states to 21373 states and 32024 transitions. [2023-12-16 06:32:50,444 INFO L78 Accepts]: Start accepts. Automaton has 21373 states and 32024 transitions. Word has length 161 [2023-12-16 06:32:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:50,445 INFO L495 AbstractCegarLoop]: Abstraction has 21373 states and 32024 transitions. [2023-12-16 06:32:50,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 21373 states and 32024 transitions. [2023-12-16 06:32:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-16 06:32:50,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:50,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:50,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:32:50,457 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:50,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:50,457 INFO L85 PathProgramCache]: Analyzing trace with hash -970878576, now seen corresponding path program 1 times [2023-12-16 06:32:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:50,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131847333] [2023-12-16 06:32:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:50,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131847333] [2023-12-16 06:32:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131847333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:50,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:50,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491856047] [2023-12-16 06:32:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:50,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:32:50,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:32:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:32:50,736 INFO L87 Difference]: Start difference. First operand 21373 states and 32024 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:50,927 INFO L93 Difference]: Finished difference Result 56243 states and 84125 transitions. [2023-12-16 06:32:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:32:50,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-16 06:32:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:50,994 INFO L225 Difference]: With dead ends: 56243 [2023-12-16 06:32:50,995 INFO L226 Difference]: Without dead ends: 35001 [2023-12-16 06:32:51,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:32:51,025 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 934 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:51,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1233 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35001 states. [2023-12-16 06:32:51,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35001 to 34999. [2023-12-16 06:32:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34999 states, 34998 states have (on average 1.4783130464597978) internal successors, (51738), 34998 states have internal predecessors, (51738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34999 states to 34999 states and 51738 transitions. [2023-12-16 06:32:51,604 INFO L78 Accepts]: Start accepts. Automaton has 34999 states and 51738 transitions. Word has length 161 [2023-12-16 06:32:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:51,605 INFO L495 AbstractCegarLoop]: Abstraction has 34999 states and 51738 transitions. [2023-12-16 06:32:51,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 34999 states and 51738 transitions. [2023-12-16 06:32:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 06:32:51,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:51,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:51,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:32:51,620 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:51,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:51,621 INFO L85 PathProgramCache]: Analyzing trace with hash -428451477, now seen corresponding path program 1 times [2023-12-16 06:32:51,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:51,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712382624] [2023-12-16 06:32:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:51,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712382624] [2023-12-16 06:32:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712382624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:32:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545908458] [2023-12-16 06:32:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:32:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:32:51,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:32:51,804 INFO L87 Difference]: Start difference. First operand 34999 states and 51738 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:51,974 INFO L93 Difference]: Finished difference Result 62915 states and 93044 transitions. [2023-12-16 06:32:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:32:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-16 06:32:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:52,274 INFO L225 Difference]: With dead ends: 62915 [2023-12-16 06:32:52,274 INFO L226 Difference]: Without dead ends: 34999 [2023-12-16 06:32:52,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:32:52,301 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 53 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:52,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1434 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34999 states. [2023-12-16 06:32:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34999 to 34999. [2023-12-16 06:32:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34999 states, 34998 states have (on average 1.47828447339848) internal successors, (51737), 34998 states have internal predecessors, (51737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34999 states to 34999 states and 51737 transitions. [2023-12-16 06:32:53,065 INFO L78 Accepts]: Start accepts. Automaton has 34999 states and 51737 transitions. Word has length 163 [2023-12-16 06:32:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:53,065 INFO L495 AbstractCegarLoop]: Abstraction has 34999 states and 51737 transitions. [2023-12-16 06:32:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 34999 states and 51737 transitions. [2023-12-16 06:32:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 06:32:53,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:53,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:53,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:32:53,085 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:53,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash 716908174, now seen corresponding path program 1 times [2023-12-16 06:32:53,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:53,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123753873] [2023-12-16 06:32:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123753873] [2023-12-16 06:32:53,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123753873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:53,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:53,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358262254] [2023-12-16 06:32:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:53,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:32:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:32:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:32:53,177 INFO L87 Difference]: Start difference. First operand 34999 states and 51737 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:53,467 INFO L93 Difference]: Finished difference Result 87988 states and 130464 transitions. [2023-12-16 06:32:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:32:53,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-16 06:32:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:53,565 INFO L225 Difference]: With dead ends: 87988 [2023-12-16 06:32:53,565 INFO L226 Difference]: Without dead ends: 54466 [2023-12-16 06:32:53,600 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 [2023-12-16 06:32:53,601 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 395 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:53,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1045 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:32:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54466 states. [2023-12-16 06:32:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54466 to 54464. [2023-12-16 06:32:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54464 states, 54463 states have (on average 1.4610653103942126) internal successors, (79574), 54463 states have internal predecessors, (79574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54464 states to 54464 states and 79574 transitions. [2023-12-16 06:32:54,609 INFO L78 Accepts]: Start accepts. Automaton has 54464 states and 79574 transitions. Word has length 163 [2023-12-16 06:32:54,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:54,609 INFO L495 AbstractCegarLoop]: Abstraction has 54464 states and 79574 transitions. [2023-12-16 06:32:54,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:54,610 INFO L276 IsEmpty]: Start isEmpty. Operand 54464 states and 79574 transitions. [2023-12-16 06:32:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 06:32:54,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:54,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:54,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:32:54,630 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:54,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash -882613592, now seen corresponding path program 1 times [2023-12-16 06:32:54,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:54,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017363256] [2023-12-16 06:32:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:54,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:54,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017363256] [2023-12-16 06:32:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017363256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:54,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:54,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:54,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270882482] [2023-12-16 06:32:54,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:54,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:32:54,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:54,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:32:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:32:54,678 INFO L87 Difference]: Start difference. First operand 54464 states and 79574 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:55,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:55,320 INFO L93 Difference]: Finished difference Result 126464 states and 186744 transitions. [2023-12-16 06:32:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:32:55,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-16 06:32:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:55,667 INFO L225 Difference]: With dead ends: 126464 [2023-12-16 06:32:55,667 INFO L226 Difference]: Without dead ends: 82760 [2023-12-16 06:32:55,742 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 [2023-12-16 06:32:55,743 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 301 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:55,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 998 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:32:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82760 states. [2023-12-16 06:32:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82760 to 75830. [2023-12-16 06:32:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75830 states, 75829 states have (on average 1.4907489219164172) internal successors, (113042), 75829 states have internal predecessors, (113042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75830 states to 75830 states and 113042 transitions. [2023-12-16 06:32:57,180 INFO L78 Accepts]: Start accepts. Automaton has 75830 states and 113042 transitions. Word has length 167 [2023-12-16 06:32:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:32:57,181 INFO L495 AbstractCegarLoop]: Abstraction has 75830 states and 113042 transitions. [2023-12-16 06:32:57,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:57,181 INFO L276 IsEmpty]: Start isEmpty. Operand 75830 states and 113042 transitions. [2023-12-16 06:32:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 06:32:57,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:32:57,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:32:57,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:32:57,213 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:32:57,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:32:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash -948399224, now seen corresponding path program 1 times [2023-12-16 06:32:57,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:32:57,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146190099] [2023-12-16 06:32:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:32:57,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:32:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:32:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:32:57,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:32:57,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146190099] [2023-12-16 06:32:57,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146190099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:32:57,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:32:57,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:32:57,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626562288] [2023-12-16 06:32:57,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:32:57,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:32:57,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:32:57,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:32:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:32:57,273 INFO L87 Difference]: Start difference. First operand 75830 states and 113042 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:32:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:32:58,099 INFO L93 Difference]: Finished difference Result 216232 states and 324642 transitions. [2023-12-16 06:32:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:32:58,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-16 06:32:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:32:58,597 INFO L225 Difference]: With dead ends: 216232 [2023-12-16 06:32:58,598 INFO L226 Difference]: Without dead ends: 149808 [2023-12-16 06:32:58,642 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 [2023-12-16 06:32:58,642 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 375 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:32:58,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 885 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:32:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149808 states. [2023-12-16 06:33:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149808 to 149806. [2023-12-16 06:33:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149806 states, 149805 states have (on average 1.4857047495076934) internal successors, (222566), 149805 states have internal predecessors, (222566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149806 states to 149806 states and 222566 transitions. [2023-12-16 06:33:01,294 INFO L78 Accepts]: Start accepts. Automaton has 149806 states and 222566 transitions. Word has length 167 [2023-12-16 06:33:01,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:33:01,294 INFO L495 AbstractCegarLoop]: Abstraction has 149806 states and 222566 transitions. [2023-12-16 06:33:01,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 149806 states and 222566 transitions. [2023-12-16 06:33:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 06:33:01,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:33:01,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:33:01,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:33:01,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:33:01,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:33:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1887218445, now seen corresponding path program 1 times [2023-12-16 06:33:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:33:01,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560611365] [2023-12-16 06:33:01,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:33:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:33:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:33:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:33:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:33:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560611365] [2023-12-16 06:33:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560611365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:33:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:33:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:33:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108320323] [2023-12-16 06:33:01,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:33:01,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:33:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:33:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:33:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:33:01,649 INFO L87 Difference]: Start difference. First operand 149806 states and 222566 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:02,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:33:02,586 INFO L93 Difference]: Finished difference Result 266873 states and 396095 transitions. [2023-12-16 06:33:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:33:02,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-16 06:33:02,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:33:02,804 INFO L225 Difference]: With dead ends: 266873 [2023-12-16 06:33:02,804 INFO L226 Difference]: Without dead ends: 117124 [2023-12-16 06:33:02,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:33:02,920 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 43 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:33:02,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1415 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:33:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117124 states. [2023-12-16 06:33:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117124 to 117124. [2023-12-16 06:33:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117124 states, 117123 states have (on average 1.4822110089393201) internal successors, (173601), 117123 states have internal predecessors, (173601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117124 states to 117124 states and 173601 transitions. [2023-12-16 06:33:05,114 INFO L78 Accepts]: Start accepts. Automaton has 117124 states and 173601 transitions. Word has length 167 [2023-12-16 06:33:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:33:05,114 INFO L495 AbstractCegarLoop]: Abstraction has 117124 states and 173601 transitions. [2023-12-16 06:33:05,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 117124 states and 173601 transitions. [2023-12-16 06:33:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-16 06:33:05,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:33:05,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:33:05,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:33:05,134 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:33:05,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:33:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash 166213248, now seen corresponding path program 1 times [2023-12-16 06:33:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:33:05,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85839137] [2023-12-16 06:33:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:33:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:33:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:33:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:33:05,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:33:05,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85839137] [2023-12-16 06:33:05,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85839137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:33:05,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:33:05,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:33:05,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409760831] [2023-12-16 06:33:05,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:33:05,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:33:05,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:33:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:33:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:33:05,191 INFO L87 Difference]: Start difference. First operand 117124 states and 173601 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:06,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:33:06,294 INFO L93 Difference]: Finished difference Result 295490 states and 441137 transitions. [2023-12-16 06:33:06,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:33:06,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2023-12-16 06:33:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:33:06,657 INFO L225 Difference]: With dead ends: 295490 [2023-12-16 06:33:06,658 INFO L226 Difference]: Without dead ends: 194572 [2023-12-16 06:33:06,745 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 [2023-12-16 06:33:06,746 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 301 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:33:06,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 965 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:33:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194572 states. [2023-12-16 06:33:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194572 to 179330. [2023-12-16 06:33:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179330 states, 179329 states have (on average 1.4997964634833183) internal successors, (268957), 179329 states have internal predecessors, (268957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179330 states to 179330 states and 268957 transitions. [2023-12-16 06:33:10,091 INFO L78 Accepts]: Start accepts. Automaton has 179330 states and 268957 transitions. Word has length 169 [2023-12-16 06:33:10,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:33:10,092 INFO L495 AbstractCegarLoop]: Abstraction has 179330 states and 268957 transitions. [2023-12-16 06:33:10,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 179330 states and 268957 transitions. [2023-12-16 06:33:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-16 06:33:10,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:33:10,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:33:10,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:33:10,115 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:33:10,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:33:10,116 INFO L85 PathProgramCache]: Analyzing trace with hash 713692690, now seen corresponding path program 1 times [2023-12-16 06:33:10,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:33:10,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084477239] [2023-12-16 06:33:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:33:10,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:33:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:33:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:33:10,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:33:10,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084477239] [2023-12-16 06:33:10,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084477239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:33:10,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:33:10,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:33:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826164153] [2023-12-16 06:33:10,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:33:10,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:33:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:33:10,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:33:10,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:33:10,707 INFO L87 Difference]: Start difference. First operand 179330 states and 268957 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:33:13,935 INFO L93 Difference]: Finished difference Result 663678 states and 997360 transitions. [2023-12-16 06:33:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 06:33:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2023-12-16 06:33:13,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:33:14,944 INFO L225 Difference]: With dead ends: 663678 [2023-12-16 06:33:14,944 INFO L226 Difference]: Without dead ends: 491619 [2023-12-16 06:33:15,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-16 06:33:15,541 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 4935 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:33:15,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4935 Valid, 2211 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:33:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491619 states. [2023-12-16 06:33:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491619 to 226861. [2023-12-16 06:33:21,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226861 states, 226860 states have (on average 1.5067177995239354) internal successors, (341814), 226860 states have internal predecessors, (341814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226861 states to 226861 states and 341814 transitions. [2023-12-16 06:33:22,055 INFO L78 Accepts]: Start accepts. Automaton has 226861 states and 341814 transitions. Word has length 172 [2023-12-16 06:33:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:33:22,055 INFO L495 AbstractCegarLoop]: Abstraction has 226861 states and 341814 transitions. [2023-12-16 06:33:22,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:22,056 INFO L276 IsEmpty]: Start isEmpty. Operand 226861 states and 341814 transitions. [2023-12-16 06:33:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-16 06:33:22,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:33:22,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:33:22,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 06:33:22,095 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:33:22,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:33:22,095 INFO L85 PathProgramCache]: Analyzing trace with hash 781025862, now seen corresponding path program 1 times [2023-12-16 06:33:22,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:33:22,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141709961] [2023-12-16 06:33:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:33:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:33:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:33:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:33:22,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:33:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141709961] [2023-12-16 06:33:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141709961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:33:22,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:33:22,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:33:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123511298] [2023-12-16 06:33:22,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:33:22,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:33:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:33:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:33:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:33:22,475 INFO L87 Difference]: Start difference. First operand 226861 states and 341814 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:33:24,617 INFO L93 Difference]: Finished difference Result 513903 states and 781911 transitions. [2023-12-16 06:33:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:33:24,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2023-12-16 06:33:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:33:25,248 INFO L225 Difference]: With dead ends: 513903 [2023-12-16 06:33:25,248 INFO L226 Difference]: Without dead ends: 309289 [2023-12-16 06:33:25,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:33:25,342 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 591 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:33:25,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 914 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:33:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309289 states. [2023-12-16 06:33:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309289 to 309287. [2023-12-16 06:33:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309287 states, 309286 states have (on average 1.5047237831650964) internal successors, (465390), 309286 states have internal predecessors, (465390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309287 states to 309287 states and 465390 transitions. [2023-12-16 06:33:31,866 INFO L78 Accepts]: Start accepts. Automaton has 309287 states and 465390 transitions. Word has length 172 [2023-12-16 06:33:31,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:33:31,867 INFO L495 AbstractCegarLoop]: Abstraction has 309287 states and 465390 transitions. [2023-12-16 06:33:31,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 309287 states and 465390 transitions. [2023-12-16 06:33:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-16 06:33:31,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:33:31,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:33:31,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:33:31,954 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:33:31,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:33:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2002764445, now seen corresponding path program 1 times [2023-12-16 06:33:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:33:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498698730] [2023-12-16 06:33:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:33:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:33:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:33:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:33:32,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:33:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498698730] [2023-12-16 06:33:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498698730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:33:32,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:33:32,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:33:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58373616] [2023-12-16 06:33:32,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:33:32,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:33:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:33:32,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:33:32,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:33:32,202 INFO L87 Difference]: Start difference. First operand 309287 states and 465390 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:33:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:33:36,930 INFO L93 Difference]: Finished difference Result 859000 states and 1308706 transitions. [2023-12-16 06:33:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:33:36,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2023-12-16 06:33:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2023-12-16 06:33:38,359 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:33:39,113 INFO L225 Difference]: With dead ends: 859000 [2023-12-16 06:33:39,113 INFO L226 Difference]: Without dead ends: 716516 [2023-12-16 06:33:39,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 06:33:39,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:33:39,389 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1035 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:33:39,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1477 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:33:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716516 states. [2023-12-16 06:33:39,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:33:39,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:33:39,921 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-16 06:33:39,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:33:39,934 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:33:39,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:33:39 BoogieIcfgContainer [2023-12-16 06:33:39,936 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:33:39,936 INFO L158 Benchmark]: Toolchain (without parser) took 57607.73ms. Allocated memory was 336.6MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 281.8MB in the beginning and 5.7GB in the end (delta: -5.4GB). Peak memory consumption was 4.4GB. Max. memory is 8.0GB. [2023-12-16 06:33:39,936 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 210.8MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:33:39,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.79ms. Allocated memory is still 336.6MB. Free memory was 281.5MB in the beginning and 248.6MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-16 06:33:39,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.86ms. Allocated memory is still 336.6MB. Free memory was 248.5MB in the beginning and 297.1MB in the end (delta: -48.6MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2023-12-16 06:33:39,943 INFO L158 Benchmark]: Boogie Preprocessor took 140.68ms. Allocated memory is still 336.6MB. Free memory was 297.1MB in the beginning and 290.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 06:33:39,943 INFO L158 Benchmark]: RCFGBuilder took 1009.81ms. Allocated memory is still 336.6MB. Free memory was 290.8MB in the beginning and 192.8MB in the end (delta: 98.0MB). Peak memory consumption was 97.5MB. Max. memory is 8.0GB. [2023-12-16 06:33:39,943 INFO L158 Benchmark]: TraceAbstraction took 55792.17ms. Allocated memory was 336.6MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 192.2MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. [2023-12-16 06:33:39,947 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 210.8MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 544.79ms. Allocated memory is still 336.6MB. Free memory was 281.5MB in the beginning and 248.6MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 115.86ms. Allocated memory is still 336.6MB. Free memory was 248.5MB in the beginning and 297.1MB in the end (delta: -48.6MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 140.68ms. Allocated memory is still 336.6MB. Free memory was 297.1MB in the beginning and 290.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1009.81ms. Allocated memory is still 336.6MB. Free memory was 290.8MB in the beginning and 192.8MB in the end (delta: 98.0MB). Peak memory consumption was 97.5MB. Max. memory is 8.0GB. * TraceAbstraction took 55792.17ms. Allocated memory was 336.6MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 192.2MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 911]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 911). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 329 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.7s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 23.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20796 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20796 mSDsluCounter, 27866 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14160 mSDsCounter, 262 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2056 IncrementalHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 262 mSolverCounterUnsat, 13706 mSDtfsCounter, 2056 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309287occurred in iteration=21, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 26.9s AutomataMinimizationTime, 22 MinimizatonAttempts, 301554 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 3539 NumberOfCodeBlocks, 3539 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 3517 ConstructedInterpolants, 0 QuantifiedInterpolants, 9241 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown