/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:27:41,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:27:42,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:27:42,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:27:42,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:27:42,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:27:42,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:27:42,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:27:42,073 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:27:42,076 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:27:42,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:27:42,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:27:42,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:27:42,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:27:42,079 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:27:42,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:27:42,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:27:42,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:27:42,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:27:42,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:27:42,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:27:42,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:27:42,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:27:42,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:27:42,081 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:27:42,081 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:27:42,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:27:42,082 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:27:42,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:27:42,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:27:42,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:27:42,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:27:42,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:27:42,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:27:42,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:27:42,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:27:42,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:27:42,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:27:42,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:27:42,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:27:42,085 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:27:42,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:27:42,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:27:42,088 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:27:42,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:27:42,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:27:42,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:27:42,346 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:27:42,347 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:27:42,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:27:43,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:27:43,660 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:27:43,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:27:43,669 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/117260105/b52e31d5d03848e1bc9fcc55fb652cef/FLAG4e9cb28c6 [2023-12-20 03:27:43,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/117260105/b52e31d5d03848e1bc9fcc55fb652cef [2023-12-20 03:27:43,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:27:43,694 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:27:43,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:27:43,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:27:43,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:27:43,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:27:43" (1/1) ... [2023-12-20 03:27:43,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78fff39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:43, skipping insertion in model container [2023-12-20 03:27:43,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:27:43" (1/1) ... [2023-12-20 03:27:43,745 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:27:43,905 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5807,5820] [2023-12-20 03:27:43,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:27:43,960 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:27:44,005 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5807,5820] [2023-12-20 03:27:44,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:27:44,040 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:27:44,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44 WrapperNode [2023-12-20 03:27:44,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:27:44,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:27:44,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:27:44,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:27:44,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,094 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 447 [2023-12-20 03:27:44,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:27:44,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:27:44,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:27:44,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:27:44,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,142 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 03:27:44,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:27:44,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:27:44,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:27:44,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:27:44,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (1/1) ... [2023-12-20 03:27:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:27:44,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:27:44,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 03:27:44,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 03:27:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:27:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:27:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:27:44,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:27:44,352 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:27:44,354 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:27:44,641 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:27:44,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:27:44,669 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:27:44,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:27:44 BoogieIcfgContainer [2023-12-20 03:27:44,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:27:44,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:27:44,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:27:44,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:27:44,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:27:43" (1/3) ... [2023-12-20 03:27:44,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa14548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:27:44, skipping insertion in model container [2023-12-20 03:27:44,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:27:44" (2/3) ... [2023-12-20 03:27:44,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa14548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:27:44, skipping insertion in model container [2023-12-20 03:27:44,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:27:44" (3/3) ... [2023-12-20 03:27:44,677 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:27:44,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:27:44,726 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:27:44,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:27:44,782 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;@5086cb9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:27:44,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:27:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 03:27:44,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:44,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:44,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:44,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1781186373, now seen corresponding path program 1 times [2023-12-20 03:27:44,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:44,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475157770] [2023-12-20 03:27:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:44,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:45,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:45,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475157770] [2023-12-20 03:27:45,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475157770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:45,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:45,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:27:45,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522908896] [2023-12-20 03:27:45,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:45,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:27:45,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:45,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:27:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:45,172 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:45,239 INFO L93 Difference]: Finished difference Result 217 states and 352 transitions. [2023-12-20 03:27:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:27:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 03:27:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:45,258 INFO L225 Difference]: With dead ends: 217 [2023-12-20 03:27:45,258 INFO L226 Difference]: Without dead ends: 149 [2023-12-20 03:27:45,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:45,266 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 107 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:45,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 329 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-20 03:27:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2023-12-20 03:27:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2023-12-20 03:27:45,331 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 59 [2023-12-20 03:27:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:45,331 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2023-12-20 03:27:45,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,332 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2023-12-20 03:27:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 03:27:45,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:45,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:45,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:27:45,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:45,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:45,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1884320944, now seen corresponding path program 1 times [2023-12-20 03:27:45,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:45,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063072222] [2023-12-20 03:27:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:45,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:45,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:45,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063072222] [2023-12-20 03:27:45,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063072222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:45,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:45,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:27:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536795763] [2023-12-20 03:27:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:27:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:27:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:45,515 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:45,545 INFO L93 Difference]: Finished difference Result 359 states and 550 transitions. [2023-12-20 03:27:45,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:27:45,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 03:27:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:45,547 INFO L225 Difference]: With dead ends: 359 [2023-12-20 03:27:45,547 INFO L226 Difference]: Without dead ends: 245 [2023-12-20 03:27:45,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:45,549 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 78 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:45,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-20 03:27:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2023-12-20 03:27:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.512396694214876) internal successors, (366), 242 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 366 transitions. [2023-12-20 03:27:45,562 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 366 transitions. Word has length 60 [2023-12-20 03:27:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:45,566 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 366 transitions. [2023-12-20 03:27:45,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,566 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 366 transitions. [2023-12-20 03:27:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 03:27:45,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:45,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:45,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:27:45,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:45,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:45,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1090276998, now seen corresponding path program 1 times [2023-12-20 03:27:45,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:45,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740497859] [2023-12-20 03:27:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:45,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:45,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740497859] [2023-12-20 03:27:45,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740497859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:45,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:45,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:27:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467747283] [2023-12-20 03:27:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:45,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:27:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:27:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:45,664 INFO L87 Difference]: Start difference. First operand 243 states and 366 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:45,697 INFO L93 Difference]: Finished difference Result 631 states and 980 transitions. [2023-12-20 03:27:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:27:45,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 03:27:45,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:45,702 INFO L225 Difference]: With dead ends: 631 [2023-12-20 03:27:45,702 INFO L226 Difference]: Without dead ends: 421 [2023-12-20 03:27:45,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:45,704 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:45,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-20 03:27:45,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2023-12-20 03:27:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.5358851674641147) internal successors, (642), 418 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 642 transitions. [2023-12-20 03:27:45,723 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 642 transitions. Word has length 61 [2023-12-20 03:27:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:45,724 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 642 transitions. [2023-12-20 03:27:45,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,724 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 642 transitions. [2023-12-20 03:27:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 03:27:45,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:45,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:45,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:27:45,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:45,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash -27171808, now seen corresponding path program 1 times [2023-12-20 03:27:45,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:45,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933281168] [2023-12-20 03:27:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:45,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:45,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933281168] [2023-12-20 03:27:45,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933281168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:45,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:45,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:27:45,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862278646] [2023-12-20 03:27:45,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:45,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:27:45,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:27:45,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:45,828 INFO L87 Difference]: Start difference. First operand 419 states and 642 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:45,852 INFO L93 Difference]: Finished difference Result 1127 states and 1756 transitions. [2023-12-20 03:27:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:27:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 03:27:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:45,856 INFO L225 Difference]: With dead ends: 1127 [2023-12-20 03:27:45,856 INFO L226 Difference]: Without dead ends: 741 [2023-12-20 03:27:45,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:45,867 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 68 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:45,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 277 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-12-20 03:27:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 739. [2023-12-20 03:27:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 1.5420054200542006) internal successors, (1138), 738 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1138 transitions. [2023-12-20 03:27:45,912 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1138 transitions. Word has length 62 [2023-12-20 03:27:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:45,914 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1138 transitions. [2023-12-20 03:27:45,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1138 transitions. [2023-12-20 03:27:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 03:27:45,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:45,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:45,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:27:45,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:45,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2064580108, now seen corresponding path program 1 times [2023-12-20 03:27:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:45,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243350638] [2023-12-20 03:27:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:45,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243350638] [2023-12-20 03:27:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243350638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:27:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749853873] [2023-12-20 03:27:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:27:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:46,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:27:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:46,138 INFO L87 Difference]: Start difference. First operand 739 states and 1138 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:46,383 INFO L93 Difference]: Finished difference Result 7799 states and 12188 transitions. [2023-12-20 03:27:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:27:46,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 03:27:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:46,407 INFO L225 Difference]: With dead ends: 7799 [2023-12-20 03:27:46,408 INFO L226 Difference]: Without dead ends: 7093 [2023-12-20 03:27:46,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 03:27:46,411 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 1198 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:46,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1760 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:27:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2023-12-20 03:27:46,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 1443. [2023-12-20 03:27:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.5325936199722607) internal successors, (2210), 1442 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2210 transitions. [2023-12-20 03:27:46,496 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2210 transitions. Word has length 63 [2023-12-20 03:27:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:46,498 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 2210 transitions. [2023-12-20 03:27:46,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2210 transitions. [2023-12-20 03:27:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 03:27:46,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:46,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:46,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:27:46,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:46,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:46,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1135227800, now seen corresponding path program 1 times [2023-12-20 03:27:46,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:46,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170632059] [2023-12-20 03:27:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:46,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:46,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:46,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170632059] [2023-12-20 03:27:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170632059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:46,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:46,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:27:46,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725766448] [2023-12-20 03:27:46,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:46,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:27:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:27:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:46,597 INFO L87 Difference]: Start difference. First operand 1443 states and 2210 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:46,653 INFO L93 Difference]: Finished difference Result 4087 states and 6260 transitions. [2023-12-20 03:27:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:27:46,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 03:27:46,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:46,662 INFO L225 Difference]: With dead ends: 4087 [2023-12-20 03:27:46,662 INFO L226 Difference]: Without dead ends: 2677 [2023-12-20 03:27:46,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:46,667 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 58 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:46,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 219 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2023-12-20 03:27:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2643. [2023-12-20 03:27:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2642 states have (on average 1.5026495079485238) internal successors, (3970), 2642 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3970 transitions. [2023-12-20 03:27:46,721 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3970 transitions. Word has length 65 [2023-12-20 03:27:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:46,722 INFO L495 AbstractCegarLoop]: Abstraction has 2643 states and 3970 transitions. [2023-12-20 03:27:46,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3970 transitions. [2023-12-20 03:27:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 03:27:46,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:46,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:46,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:27:46,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:46,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1114225145, now seen corresponding path program 1 times [2023-12-20 03:27:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214837563] [2023-12-20 03:27:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:47,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:47,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214837563] [2023-12-20 03:27:47,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214837563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:47,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:47,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:27:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861765777] [2023-12-20 03:27:47,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:47,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:27:47,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:27:47,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:47,024 INFO L87 Difference]: Start difference. First operand 2643 states and 3970 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:47,187 INFO L93 Difference]: Finished difference Result 5255 states and 7908 transitions. [2023-12-20 03:27:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:27:47,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 03:27:47,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:47,195 INFO L225 Difference]: With dead ends: 5255 [2023-12-20 03:27:47,195 INFO L226 Difference]: Without dead ends: 2645 [2023-12-20 03:27:47,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 03:27:47,198 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 148 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:47,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 506 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2023-12-20 03:27:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2643. [2023-12-20 03:27:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2642 states have (on average 1.490537471612415) internal successors, (3938), 2642 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3938 transitions. [2023-12-20 03:27:47,237 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3938 transitions. Word has length 65 [2023-12-20 03:27:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:47,238 INFO L495 AbstractCegarLoop]: Abstraction has 2643 states and 3938 transitions. [2023-12-20 03:27:47,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3938 transitions. [2023-12-20 03:27:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:27:47,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:47,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:47,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:27:47,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:47,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash -234566684, now seen corresponding path program 1 times [2023-12-20 03:27:47,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:47,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904291969] [2023-12-20 03:27:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:47,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:47,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:47,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904291969] [2023-12-20 03:27:47,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904291969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:47,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:47,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:27:47,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335438417] [2023-12-20 03:27:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:47,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:27:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:27:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:47,300 INFO L87 Difference]: Start difference. First operand 2643 states and 3938 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:47,348 INFO L93 Difference]: Finished difference Result 5146 states and 7752 transitions. [2023-12-20 03:27:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:27:47,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:27:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:47,359 INFO L225 Difference]: With dead ends: 5146 [2023-12-20 03:27:47,360 INFO L226 Difference]: Without dead ends: 3735 [2023-12-20 03:27:47,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:27:47,363 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:47,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 297 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:47,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2023-12-20 03:27:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3733. [2023-12-20 03:27:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.4887459807073955) internal successors, (5556), 3732 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5556 transitions. [2023-12-20 03:27:47,430 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5556 transitions. Word has length 66 [2023-12-20 03:27:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:47,430 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5556 transitions. [2023-12-20 03:27:47,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5556 transitions. [2023-12-20 03:27:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:27:47,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:47,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:27:47,435 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:47,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:47,436 INFO L85 PathProgramCache]: Analyzing trace with hash -183150479, now seen corresponding path program 1 times [2023-12-20 03:27:47,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:47,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433460237] [2023-12-20 03:27:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:47,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:47,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433460237] [2023-12-20 03:27:47,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433460237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:47,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:47,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:27:47,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728684605] [2023-12-20 03:27:47,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:47,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:27:47,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:47,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:27:47,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:27:47,536 INFO L87 Difference]: Start difference. First operand 3733 states and 5556 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:47,622 INFO L93 Difference]: Finished difference Result 7431 states and 11077 transitions. [2023-12-20 03:27:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:27:47,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:27:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:47,633 INFO L225 Difference]: With dead ends: 7431 [2023-12-20 03:27:47,633 INFO L226 Difference]: Without dead ends: 3733 [2023-12-20 03:27:47,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:47,641 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 322 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:47,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 99 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:27:47,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2023-12-20 03:27:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3733. [2023-12-20 03:27:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.4758842443729903) internal successors, (5508), 3732 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5508 transitions. [2023-12-20 03:27:47,712 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5508 transitions. Word has length 66 [2023-12-20 03:27:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:47,712 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5508 transitions. [2023-12-20 03:27:47,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5508 transitions. [2023-12-20 03:27:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:27:47,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:47,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:47,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:27:47,713 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:47,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash -55065172, now seen corresponding path program 1 times [2023-12-20 03:27:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819804433] [2023-12-20 03:27:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:47,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819804433] [2023-12-20 03:27:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819804433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:47,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:47,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:27:47,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21623923] [2023-12-20 03:27:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:47,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:27:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:27:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:27:47,809 INFO L87 Difference]: Start difference. First operand 3733 states and 5508 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:47,890 INFO L93 Difference]: Finished difference Result 7431 states and 10981 transitions. [2023-12-20 03:27:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:27:47,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:27:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:47,916 INFO L225 Difference]: With dead ends: 7431 [2023-12-20 03:27:47,916 INFO L226 Difference]: Without dead ends: 3733 [2023-12-20 03:27:47,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:47,921 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 293 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:47,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 115 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2023-12-20 03:27:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3733. [2023-12-20 03:27:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.4630225080385852) internal successors, (5460), 3732 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5460 transitions. [2023-12-20 03:27:47,976 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5460 transitions. Word has length 66 [2023-12-20 03:27:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:47,976 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5460 transitions. [2023-12-20 03:27:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5460 transitions. [2023-12-20 03:27:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:27:47,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:47,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:47,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:27:47,978 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:47,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:47,978 INFO L85 PathProgramCache]: Analyzing trace with hash -584355673, now seen corresponding path program 1 times [2023-12-20 03:27:47,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:47,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998899361] [2023-12-20 03:27:47,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:47,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:48,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:48,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998899361] [2023-12-20 03:27:48,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998899361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:48,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:48,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:27:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722627013] [2023-12-20 03:27:48,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:48,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:27:48,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:27:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:27:48,081 INFO L87 Difference]: Start difference. First operand 3733 states and 5460 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:48,187 INFO L93 Difference]: Finished difference Result 7431 states and 10885 transitions. [2023-12-20 03:27:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:27:48,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:27:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:48,193 INFO L225 Difference]: With dead ends: 7431 [2023-12-20 03:27:48,193 INFO L226 Difference]: Without dead ends: 3733 [2023-12-20 03:27:48,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:48,196 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 329 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:48,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 91 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2023-12-20 03:27:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3733. [2023-12-20 03:27:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.45016077170418) internal successors, (5412), 3732 states have internal predecessors, (5412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5412 transitions. [2023-12-20 03:27:48,246 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5412 transitions. Word has length 66 [2023-12-20 03:27:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:48,246 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5412 transitions. [2023-12-20 03:27:48,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5412 transitions. [2023-12-20 03:27:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:27:48,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:48,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:48,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:27:48,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:48,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:48,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1347219380, now seen corresponding path program 1 times [2023-12-20 03:27:48,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:48,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272241971] [2023-12-20 03:27:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:48,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:48,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:48,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272241971] [2023-12-20 03:27:48,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272241971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:48,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:48,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:27:48,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852236622] [2023-12-20 03:27:48,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:48,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:27:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:27:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:27:48,395 INFO L87 Difference]: Start difference. First operand 3733 states and 5412 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:48,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:48,447 INFO L93 Difference]: Finished difference Result 6717 states and 9707 transitions. [2023-12-20 03:27:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:27:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:27:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:48,460 INFO L225 Difference]: With dead ends: 6717 [2023-12-20 03:27:48,460 INFO L226 Difference]: Without dead ends: 6715 [2023-12-20 03:27:48,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:27:48,463 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 174 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:48,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 580 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:27:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2023-12-20 03:27:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 3861. [2023-12-20 03:27:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3861 states, 3860 states have (on average 1.4310880829015544) internal successors, (5524), 3860 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 5524 transitions. [2023-12-20 03:27:48,539 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 5524 transitions. Word has length 66 [2023-12-20 03:27:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:48,539 INFO L495 AbstractCegarLoop]: Abstraction has 3861 states and 5524 transitions. [2023-12-20 03:27:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 5524 transitions. [2023-12-20 03:27:48,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:27:48,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:48,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:48,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:27:48,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:48,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash 347946167, now seen corresponding path program 1 times [2023-12-20 03:27:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:48,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272614316] [2023-12-20 03:27:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:48,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 03:27:48,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272614316] [2023-12-20 03:27:48,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272614316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:48,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:48,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:27:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159407221] [2023-12-20 03:27:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:48,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:27:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:27:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:48,686 INFO L87 Difference]: Start difference. First operand 3861 states and 5524 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:48,882 INFO L93 Difference]: Finished difference Result 23713 states and 33970 transitions. [2023-12-20 03:27:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:27:48,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 03:27:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:48,919 INFO L225 Difference]: With dead ends: 23713 [2023-12-20 03:27:48,919 INFO L226 Difference]: Without dead ends: 19887 [2023-12-20 03:27:48,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:27:48,929 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 928 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:48,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 786 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:27:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19887 states. [2023-12-20 03:27:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19887 to 7685. [2023-12-20 03:27:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7684 states have (on average 1.426861009890682) internal successors, (10964), 7684 states have internal predecessors, (10964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 10964 transitions. [2023-12-20 03:27:49,096 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 10964 transitions. Word has length 93 [2023-12-20 03:27:49,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:49,096 INFO L495 AbstractCegarLoop]: Abstraction has 7685 states and 10964 transitions. [2023-12-20 03:27:49,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:49,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 10964 transitions. [2023-12-20 03:27:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:27:49,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:49,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:49,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:27:49,099 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:49,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash -805999939, now seen corresponding path program 1 times [2023-12-20 03:27:49,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:49,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128183519] [2023-12-20 03:27:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:49,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 03:27:49,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:49,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128183519] [2023-12-20 03:27:49,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128183519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:49,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:49,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:27:49,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311087356] [2023-12-20 03:27:49,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:49,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:27:49,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:27:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:49,229 INFO L87 Difference]: Start difference. First operand 7685 states and 10964 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:49,401 INFO L93 Difference]: Finished difference Result 27537 states and 39410 transitions. [2023-12-20 03:27:49,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:27:49,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 03:27:49,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:49,443 INFO L225 Difference]: With dead ends: 27537 [2023-12-20 03:27:49,443 INFO L226 Difference]: Without dead ends: 23711 [2023-12-20 03:27:49,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:27:49,455 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 879 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:49,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 813 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:27:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23711 states. [2023-12-20 03:27:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23711 to 13429. [2023-12-20 03:27:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13429 states, 13428 states have (on average 1.4212094131665178) internal successors, (19084), 13428 states have internal predecessors, (19084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13429 states to 13429 states and 19084 transitions. [2023-12-20 03:27:49,737 INFO L78 Accepts]: Start accepts. Automaton has 13429 states and 19084 transitions. Word has length 93 [2023-12-20 03:27:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:49,737 INFO L495 AbstractCegarLoop]: Abstraction has 13429 states and 19084 transitions. [2023-12-20 03:27:49,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 13429 states and 19084 transitions. [2023-12-20 03:27:49,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:27:49,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:49,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:49,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:27:49,741 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:49,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -509954511, now seen corresponding path program 1 times [2023-12-20 03:27:49,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:49,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146288949] [2023-12-20 03:27:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:49,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:27:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:49,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146288949] [2023-12-20 03:27:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146288949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:49,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:27:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522084198] [2023-12-20 03:27:49,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:27:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:27:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:49,885 INFO L87 Difference]: Start difference. First operand 13429 states and 19084 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:50,122 INFO L93 Difference]: Finished difference Result 31361 states and 44850 transitions. [2023-12-20 03:27:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:27:50,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 03:27:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:50,173 INFO L225 Difference]: With dead ends: 31361 [2023-12-20 03:27:50,173 INFO L226 Difference]: Without dead ends: 27535 [2023-12-20 03:27:50,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:27:50,186 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 774 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:50,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 929 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:27:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27535 states. [2023-12-20 03:27:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27535 to 17253. [2023-12-20 03:27:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17253 states, 17252 states have (on average 1.4215163459309066) internal successors, (24524), 17252 states have internal predecessors, (24524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17253 states to 17253 states and 24524 transitions. [2023-12-20 03:27:50,513 INFO L78 Accepts]: Start accepts. Automaton has 17253 states and 24524 transitions. Word has length 93 [2023-12-20 03:27:50,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:50,513 INFO L495 AbstractCegarLoop]: Abstraction has 17253 states and 24524 transitions. [2023-12-20 03:27:50,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 17253 states and 24524 transitions. [2023-12-20 03:27:50,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:27:50,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:50,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:50,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:27:50,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:50,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:50,517 INFO L85 PathProgramCache]: Analyzing trace with hash 918542123, now seen corresponding path program 1 times [2023-12-20 03:27:50,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:50,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316477068] [2023-12-20 03:27:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:50,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 03:27:50,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:50,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316477068] [2023-12-20 03:27:50,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316477068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:50,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:50,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:27:50,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278947107] [2023-12-20 03:27:50,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:27:50,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:50,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:27:50,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:50,640 INFO L87 Difference]: Start difference. First operand 17253 states and 24524 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:50,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:50,860 INFO L93 Difference]: Finished difference Result 35185 states and 50290 transitions. [2023-12-20 03:27:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:27:50,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 03:27:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:50,920 INFO L225 Difference]: With dead ends: 35185 [2023-12-20 03:27:50,920 INFO L226 Difference]: Without dead ends: 31359 [2023-12-20 03:27:50,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:27:50,932 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 817 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:50,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 930 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:27:50,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31359 states. [2023-12-20 03:27:51,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31359 to 21077. [2023-12-20 03:27:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21077 states, 21076 states have (on average 1.4217118997912317) internal successors, (29964), 21076 states have internal predecessors, (29964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21077 states to 21077 states and 29964 transitions. [2023-12-20 03:27:51,249 INFO L78 Accepts]: Start accepts. Automaton has 21077 states and 29964 transitions. Word has length 93 [2023-12-20 03:27:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:51,250 INFO L495 AbstractCegarLoop]: Abstraction has 21077 states and 29964 transitions. [2023-12-20 03:27:51,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 21077 states and 29964 transitions. [2023-12-20 03:27:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 03:27:51,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:51,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:51,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:27:51,254 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:51,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1542410051, now seen corresponding path program 1 times [2023-12-20 03:27:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:51,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274696034] [2023-12-20 03:27:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:27:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274696034] [2023-12-20 03:27:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274696034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:27:51,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:27:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:27:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590941641] [2023-12-20 03:27:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:27:51,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:27:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:27:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:27:51,386 INFO L87 Difference]: Start difference. First operand 21077 states and 29964 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:27:51,630 INFO L93 Difference]: Finished difference Result 36609 states and 52370 transitions. [2023-12-20 03:27:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:27:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 03:27:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:27:51,695 INFO L225 Difference]: With dead ends: 36609 [2023-12-20 03:27:51,696 INFO L226 Difference]: Without dead ends: 33983 [2023-12-20 03:27:51,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:27:51,711 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 809 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:27:51,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 860 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:27:51,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33983 states. [2023-12-20 03:27:52,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33983 to 23701. [2023-12-20 03:27:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23701 states, 23700 states have (on average 1.4236286919831223) internal successors, (33740), 23700 states have internal predecessors, (33740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:52,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23701 states to 23701 states and 33740 transitions. [2023-12-20 03:27:52,204 INFO L78 Accepts]: Start accepts. Automaton has 23701 states and 33740 transitions. Word has length 94 [2023-12-20 03:27:52,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:27:52,204 INFO L495 AbstractCegarLoop]: Abstraction has 23701 states and 33740 transitions. [2023-12-20 03:27:52,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:27:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand 23701 states and 33740 transitions. [2023-12-20 03:27:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:27:52,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:27:52,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:27:52,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:27:52,208 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:27:52,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:27:52,209 INFO L85 PathProgramCache]: Analyzing trace with hash 342548852, now seen corresponding path program 1 times [2023-12-20 03:27:52,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:27:52,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779940750] [2023-12-20 03:27:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:52,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:27:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:27:52,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:27:52,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779940750] [2023-12-20 03:27:52,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779940750] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:27:52,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236025512] [2023-12-20 03:27:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:27:52,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:27:52,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:27:52,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:27:52,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 03:27:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:27:53,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 03:27:53,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:27:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:27:53,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:27:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:27:53,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236025512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:27:53,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:27:53,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-20 03:27:53,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466090061] [2023-12-20 03:27:53,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:27:53,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 03:27:53,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:27:53,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 03:27:53,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:27:53,497 INFO L87 Difference]: Start difference. First operand 23701 states and 33740 transitions. Second operand has 17 states, 17 states have (on average 16.0) internal successors, (272), 17 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:04,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:04,522 INFO L93 Difference]: Finished difference Result 425449 states and 596374 transitions. [2023-12-20 03:28:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-20 03:28:04,523 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.0) internal successors, (272), 17 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:28:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:05,259 INFO L225 Difference]: With dead ends: 425449 [2023-12-20 03:28:05,259 INFO L226 Difference]: Without dead ends: 401783 [2023-12-20 03:28:05,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29410 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=8236, Invalid=53516, Unknown=0, NotChecked=0, Total=61752 [2023-12-20 03:28:05,362 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 8614 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 3067 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8614 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:05,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8614 Valid, 2411 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 3067 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 03:28:05,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401783 states. [2023-12-20 03:28:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401783 to 165853. [2023-12-20 03:28:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165853 states, 165852 states have (on average 1.393386875045221) internal successors, (231096), 165852 states have internal predecessors, (231096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165853 states to 165853 states and 231096 transitions. [2023-12-20 03:28:08,741 INFO L78 Accepts]: Start accepts. Automaton has 165853 states and 231096 transitions. Word has length 95 [2023-12-20 03:28:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:08,742 INFO L495 AbstractCegarLoop]: Abstraction has 165853 states and 231096 transitions. [2023-12-20 03:28:08,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.0) internal successors, (272), 17 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 165853 states and 231096 transitions. [2023-12-20 03:28:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:28:08,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:08,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:28:08,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 03:28:08,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 03:28:08,950 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:08,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash 675454055, now seen corresponding path program 1 times [2023-12-20 03:28:08,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:08,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664022019] [2023-12-20 03:28:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:09,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664022019] [2023-12-20 03:28:09,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664022019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:09,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:09,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:28:09,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669177956] [2023-12-20 03:28:09,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:09,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:28:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:28:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:28:09,557 INFO L87 Difference]: Start difference. First operand 165853 states and 231096 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:10,593 INFO L93 Difference]: Finished difference Result 294268 states and 409720 transitions. [2023-12-20 03:28:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:28:10,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:28:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:10,787 INFO L225 Difference]: With dead ends: 294268 [2023-12-20 03:28:10,787 INFO L226 Difference]: Without dead ends: 128450 [2023-12-20 03:28:10,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:28:10,882 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 59 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:10,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 280 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:28:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128450 states. [2023-12-20 03:28:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128450 to 128448. [2023-12-20 03:28:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128448 states, 128447 states have (on average 1.3765677672503056) internal successors, (176816), 128447 states have internal predecessors, (176816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128448 states to 128448 states and 176816 transitions. [2023-12-20 03:28:12,828 INFO L78 Accepts]: Start accepts. Automaton has 128448 states and 176816 transitions. Word has length 95 [2023-12-20 03:28:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:12,829 INFO L495 AbstractCegarLoop]: Abstraction has 128448 states and 176816 transitions. [2023-12-20 03:28:12,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 128448 states and 176816 transitions. [2023-12-20 03:28:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 03:28:12,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:12,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:28:12,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:28:12,869 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:12,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2087401601, now seen corresponding path program 1 times [2023-12-20 03:28:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:12,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773097885] [2023-12-20 03:28:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:12,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:13,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773097885] [2023-12-20 03:28:13,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773097885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:28:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896895047] [2023-12-20 03:28:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:13,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:28:13,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:28:13,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:28:13,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 03:28:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:13,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:28:13,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:28:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:13,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:28:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896895047] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:28:14,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:28:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-20 03:28:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269958945] [2023-12-20 03:28:14,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:28:14,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:28:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:28:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:28:14,643 INFO L87 Difference]: Start difference. First operand 128448 states and 176816 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:17,539 INFO L93 Difference]: Finished difference Result 711275 states and 969359 transitions. [2023-12-20 03:28:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 03:28:17,540 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-20 03:28:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:18,645 INFO L225 Difference]: With dead ends: 711275 [2023-12-20 03:28:18,646 INFO L226 Difference]: Without dead ends: 587694 [2023-12-20 03:28:18,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=538, Invalid=1624, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 03:28:18,790 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1662 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:18,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 1491 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:28:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587694 states. [2023-12-20 03:28:23,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587694 to 257400. [2023-12-20 03:28:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257400 states, 257399 states have (on average 1.3650480382596668) internal successors, (351362), 257399 states have internal predecessors, (351362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257400 states to 257400 states and 351362 transitions. [2023-12-20 03:28:24,286 INFO L78 Accepts]: Start accepts. Automaton has 257400 states and 351362 transitions. Word has length 96 [2023-12-20 03:28:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:24,286 INFO L495 AbstractCegarLoop]: Abstraction has 257400 states and 351362 transitions. [2023-12-20 03:28:24,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand 257400 states and 351362 transitions. [2023-12-20 03:28:24,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 03:28:24,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:24,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:28:24,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 03:28:24,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-12-20 03:28:24,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:24,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:24,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1968240871, now seen corresponding path program 1 times [2023-12-20 03:28:24,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708613984] [2023-12-20 03:28:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:24,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:24,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708613984] [2023-12-20 03:28:24,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708613984] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:28:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808201224] [2023-12-20 03:28:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:24,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:28:24,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:28:24,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:28:24,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 03:28:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:24,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:28:24,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:28:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:25,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:28:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:25,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808201224] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:28:25,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:28:25,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-12-20 03:28:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787481272] [2023-12-20 03:28:25,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:28:25,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 03:28:25,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 03:28:25,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-20 03:28:25,686 INFO L87 Difference]: Start difference. First operand 257400 states and 351362 transitions. Second operand has 20 states, 20 states have (on average 10.5) internal successors, (210), 19 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:30,753 INFO L93 Difference]: Finished difference Result 1438943 states and 1946238 transitions. [2023-12-20 03:28:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-20 03:28:30,753 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.5) internal successors, (210), 19 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-20 03:28:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:33,120 INFO L225 Difference]: With dead ends: 1438943 [2023-12-20 03:28:33,120 INFO L226 Difference]: Without dead ends: 1181580 [2023-12-20 03:28:33,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 03:28:33,439 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 2786 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:33,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2786 Valid, 1364 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 03:28:34,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181580 states. [2023-12-20 03:28:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181580 to 595880. [2023-12-20 03:28:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595880 states, 595879 states have (on average 1.3528434464043875) internal successors, (806131), 595879 states have internal predecessors, (806131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595880 states to 595880 states and 806131 transitions. [2023-12-20 03:28:46,842 INFO L78 Accepts]: Start accepts. Automaton has 595880 states and 806131 transitions. Word has length 96 [2023-12-20 03:28:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:46,842 INFO L495 AbstractCegarLoop]: Abstraction has 595880 states and 806131 transitions. [2023-12-20 03:28:46,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.5) internal successors, (210), 19 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 595880 states and 806131 transitions. [2023-12-20 03:28:46,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:28:46,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:46,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:28:46,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 03:28:47,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:28:47,067 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:47,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:47,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2018736231, now seen corresponding path program 1 times [2023-12-20 03:28:47,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:47,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675816820] [2023-12-20 03:28:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:47,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:28:47,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675816820] [2023-12-20 03:28:47,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675816820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:47,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:47,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:28:47,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811616324] [2023-12-20 03:28:47,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:47,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:28:47,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:47,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:28:47,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:28:47,122 INFO L87 Difference]: Start difference. First operand 595880 states and 806131 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:51,304 INFO L93 Difference]: Finished difference Result 932273 states and 1267802 transitions. [2023-12-20 03:28:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:28:51,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 03:28:51,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:51,845 INFO L225 Difference]: With dead ends: 932273 [2023-12-20 03:28:51,845 INFO L226 Difference]: Without dead ends: 336551 [2023-12-20 03:28:52,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:28:52,427 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 68 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:52,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 120 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336551 states. [2023-12-20 03:28:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336551 to 336551. [2023-12-20 03:28:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336551 states, 336550 states have (on average 1.3592601396523547) internal successors, (457459), 336550 states have internal predecessors, (457459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336551 states to 336551 states and 457459 transitions. [2023-12-20 03:28:57,499 INFO L78 Accepts]: Start accepts. Automaton has 336551 states and 457459 transitions. Word has length 97 [2023-12-20 03:28:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:57,501 INFO L495 AbstractCegarLoop]: Abstraction has 336551 states and 457459 transitions. [2023-12-20 03:28:57,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 336551 states and 457459 transitions. [2023-12-20 03:28:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:28:57,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:57,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:28:57,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:28:57,516 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:57,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:57,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1517371200, now seen corresponding path program 1 times [2023-12-20 03:28:57,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:57,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81391607] [2023-12-20 03:28:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:57,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:57,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:57,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81391607] [2023-12-20 03:28:57,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81391607] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:28:57,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021172364] [2023-12-20 03:28:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:57,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:28:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:28:57,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:28:57,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 03:28:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:58,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:28:58,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:28:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:58,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:28:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021172364] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:28:59,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:28:59,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-20 03:28:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60535599] [2023-12-20 03:28:59,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:28:59,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:28:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:59,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:28:59,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:28:59,600 INFO L87 Difference]: Start difference. First operand 336551 states and 457459 transitions. Second operand has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 18 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:08,066 INFO L93 Difference]: Finished difference Result 2064603 states and 2782885 transitions. [2023-12-20 03:29:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 03:29:08,067 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 18 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 03:29:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:11,596 INFO L225 Difference]: With dead ends: 2064603 [2023-12-20 03:29:11,596 INFO L226 Difference]: Without dead ends: 1770505 [2023-12-20 03:29:11,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=805, Invalid=2275, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 03:29:11,992 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 2453 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2453 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:11,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2453 Valid, 1284 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 03:29:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770505 states. [2023-12-20 03:29:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770505 to 801693. [2023-12-20 03:29:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801693 states, 801692 states have (on average 1.354566342186276) internal successors, (1085945), 801692 states have internal predecessors, (1085945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801693 states to 801693 states and 1085945 transitions. [2023-12-20 03:29:32,309 INFO L78 Accepts]: Start accepts. Automaton has 801693 states and 1085945 transitions. Word has length 97 [2023-12-20 03:29:32,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:32,309 INFO L495 AbstractCegarLoop]: Abstraction has 801693 states and 1085945 transitions. [2023-12-20 03:29:32,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 18 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 801693 states and 1085945 transitions. [2023-12-20 03:29:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 03:29:32,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:32,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:32,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 03:29:32,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:29:32,516 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:32,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1371444454, now seen corresponding path program 1 times [2023-12-20 03:29:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:32,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189654991] [2023-12-20 03:29:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:32,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:32,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189654991] [2023-12-20 03:29:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189654991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:29:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276819956] [2023-12-20 03:29:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:32,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:29:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:29:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:32,587 INFO L87 Difference]: Start difference. First operand 801693 states and 1085945 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:37,312 INFO L93 Difference]: Finished difference Result 1191385 states and 1613191 transitions. [2023-12-20 03:29:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:29:37,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-20 03:29:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:38,420 INFO L225 Difference]: With dead ends: 1191385 [2023-12-20 03:29:38,420 INFO L226 Difference]: Without dead ends: 426615 [2023-12-20 03:29:38,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:38,913 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 49 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:38,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 261 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:29:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426615 states. [2023-12-20 03:29:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426615 to 426613. [2023-12-20 03:29:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426613 states, 426612 states have (on average 1.3362329235933355) internal successors, (570053), 426612 states have internal predecessors, (570053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426613 states to 426613 states and 570053 transitions. [2023-12-20 03:29:45,658 INFO L78 Accepts]: Start accepts. Automaton has 426613 states and 570053 transitions. Word has length 98 [2023-12-20 03:29:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:45,658 INFO L495 AbstractCegarLoop]: Abstraction has 426613 states and 570053 transitions. [2023-12-20 03:29:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 426613 states and 570053 transitions. [2023-12-20 03:29:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 03:29:45,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:45,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:45,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 03:29:45,664 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:45,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1619573536, now seen corresponding path program 1 times [2023-12-20 03:29:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:45,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969440331] [2023-12-20 03:29:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:45,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:45,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:45,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969440331] [2023-12-20 03:29:45,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969440331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:45,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:45,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:29:45,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580375734] [2023-12-20 03:29:45,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:45,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:29:45,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:29:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:45,740 INFO L87 Difference]: Start difference. First operand 426613 states and 570053 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:47,617 INFO L93 Difference]: Finished difference Result 630706 states and 842483 transitions. [2023-12-20 03:29:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:29:47,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-20 03:29:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:47,951 INFO L225 Difference]: With dead ends: 630706 [2023-12-20 03:29:47,951 INFO L226 Difference]: Without dead ends: 218796 [2023-12-20 03:29:48,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:48,479 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 40 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:48,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 245 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:29:48,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218796 states. [2023-12-20 03:29:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218796 to 216430. [2023-12-20 03:29:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216430 states, 216429 states have (on average 1.3176884798247925) internal successors, (285186), 216429 states have internal predecessors, (285186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216430 states to 216430 states and 285186 transitions. [2023-12-20 03:29:51,420 INFO L78 Accepts]: Start accepts. Automaton has 216430 states and 285186 transitions. Word has length 98 [2023-12-20 03:29:51,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:51,420 INFO L495 AbstractCegarLoop]: Abstraction has 216430 states and 285186 transitions. [2023-12-20 03:29:51,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 216430 states and 285186 transitions. [2023-12-20 03:29:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 03:29:51,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:51,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:51,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 03:29:51,429 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:51,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash -651232160, now seen corresponding path program 1 times [2023-12-20 03:29:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:51,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267547216] [2023-12-20 03:29:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:51,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:51,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:51,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267547216] [2023-12-20 03:29:51,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267547216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:29:51,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405685646] [2023-12-20 03:29:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:51,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:29:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:29:51,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:29:51,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 03:29:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:51,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 03:29:51,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:29:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:52,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:29:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:53,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405685646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:29:53,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:29:53,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-20 03:29:53,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607652888] [2023-12-20 03:29:53,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:29:53,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:29:53,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:53,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:29:53,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:29:53,259 INFO L87 Difference]: Start difference. First operand 216430 states and 285186 transitions. Second operand has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 18 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:00,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:00,025 INFO L93 Difference]: Finished difference Result 1747970 states and 2277440 transitions. [2023-12-20 03:30:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 03:30:00,026 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 18 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-20 03:30:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:30:03,112 INFO L225 Difference]: With dead ends: 1747970 [2023-12-20 03:30:03,112 INFO L226 Difference]: Without dead ends: 1531654 [2023-12-20 03:30:03,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=641, Invalid=2221, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 03:30:03,786 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1690 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:30:03,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 2141 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 03:30:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531654 states. [2023-12-20 03:30:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531654 to 500391. [2023-12-20 03:30:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500391 states, 500390 states have (on average 1.3032554607406224) internal successors, (652136), 500390 states have internal predecessors, (652136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500391 states to 500391 states and 652136 transitions. [2023-12-20 03:30:15,433 INFO L78 Accepts]: Start accepts. Automaton has 500391 states and 652136 transitions. Word has length 98 [2023-12-20 03:30:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:30:15,433 INFO L495 AbstractCegarLoop]: Abstraction has 500391 states and 652136 transitions. [2023-12-20 03:30:15,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 18 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 500391 states and 652136 transitions. [2023-12-20 03:30:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:30:15,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:30:15,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:30:15,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 03:30:15,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 03:30:15,639 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:30:15,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:30:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash 733719217, now seen corresponding path program 1 times [2023-12-20 03:30:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:30:15,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492678981] [2023-12-20 03:30:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:30:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:16,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:30:16,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492678981] [2023-12-20 03:30:16,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492678981] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:30:16,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65362657] [2023-12-20 03:30:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:30:16,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:30:16,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:30:16,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:30:16,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 03:30:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:30:16,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 03:30:16,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:30:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:17,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:30:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:30:18,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65362657] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:30:18,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:30:18,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2023-12-20 03:30:18,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828276009] [2023-12-20 03:30:18,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:30:18,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 03:30:18,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:30:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 03:30:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 03:30:18,451 INFO L87 Difference]: Start difference. First operand 500391 states and 652136 transitions. Second operand has 34 states, 34 states have (on average 7.617647058823529) internal successors, (259), 33 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:30:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:30:59,718 INFO L93 Difference]: Finished difference Result 1660492 states and 2164066 transitions. [2023-12-20 03:30:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 380 states. [2023-12-20 03:30:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.617647058823529) internal successors, (259), 33 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 03:30:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:31:02,526 INFO L225 Difference]: With dead ends: 1660492 [2023-12-20 03:31:02,526 INFO L226 Difference]: Without dead ends: 1425285 [2023-12-20 03:31:02,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 409 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73523 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=18211, Invalid=150299, Unknown=0, NotChecked=0, Total=168510 [2023-12-20 03:31:02,902 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 13240 mSDsluCounter, 19747 mSDsCounter, 0 mSdLazyCounter, 3614 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13240 SdHoareTripleChecker+Valid, 21064 SdHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:31:02,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13240 Valid, 21064 Invalid, 3643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 3614 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 03:31:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425285 states. [2023-12-20 03:31:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425285 to 511819. [2023-12-20 03:31:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511819 states, 511818 states have (on average 1.3076484218999722) internal successors, (669278), 511818 states have internal predecessors, (669278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511819 states to 511819 states and 669278 transitions. [2023-12-20 03:31:15,339 INFO L78 Accepts]: Start accepts. Automaton has 511819 states and 669278 transitions. Word has length 99 [2023-12-20 03:31:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:31:15,340 INFO L495 AbstractCegarLoop]: Abstraction has 511819 states and 669278 transitions. [2023-12-20 03:31:15,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.617647058823529) internal successors, (259), 33 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:15,340 INFO L276 IsEmpty]: Start isEmpty. Operand 511819 states and 669278 transitions. [2023-12-20 03:31:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:31:15,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:31:15,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:31:15,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 03:31:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 03:31:15,545 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:31:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:31:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1359592305, now seen corresponding path program 1 times [2023-12-20 03:31:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:31:15,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436741868] [2023-12-20 03:31:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:15,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:31:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:16,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:31:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436741868] [2023-12-20 03:31:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436741868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:31:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800418329] [2023-12-20 03:31:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:16,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:31:16,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:31:16,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:31:16,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 03:31:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:16,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 03:31:16,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:31:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:17,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:31:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:18,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800418329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:31:18,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:31:18,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 28 [2023-12-20 03:31:18,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588276474] [2023-12-20 03:31:18,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:31:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 03:31:18,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:31:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 03:31:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2023-12-20 03:31:18,318 INFO L87 Difference]: Start difference. First operand 511819 states and 669278 transitions. Second operand has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:31:28,566 INFO L93 Difference]: Finished difference Result 1596677 states and 2074014 transitions. [2023-12-20 03:31:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-20 03:31:28,566 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 03:31:28,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:31:32,826 INFO L225 Difference]: With dead ends: 1596677 [2023-12-20 03:31:32,826 INFO L226 Difference]: Without dead ends: 1434793 [2023-12-20 03:31:33,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1626, Invalid=6746, Unknown=0, NotChecked=0, Total=8372 [2023-12-20 03:31:33,130 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 6545 mSDsluCounter, 7057 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6545 SdHoareTripleChecker+Valid, 7438 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:31:33,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6545 Valid, 7438 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 03:31:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434793 states. [2023-12-20 03:31:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434793 to 514905. [2023-12-20 03:31:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514905 states, 514904 states have (on average 1.3088012522722683) internal successors, (673907), 514904 states have internal predecessors, (673907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514905 states to 514905 states and 673907 transitions. [2023-12-20 03:31:45,556 INFO L78 Accepts]: Start accepts. Automaton has 514905 states and 673907 transitions. Word has length 99 [2023-12-20 03:31:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:31:45,556 INFO L495 AbstractCegarLoop]: Abstraction has 514905 states and 673907 transitions. [2023-12-20 03:31:45,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 514905 states and 673907 transitions. [2023-12-20 03:31:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:31:45,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:31:45,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:31:45,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 03:31:45,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:31:45,767 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:31:45,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:31:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash -985499445, now seen corresponding path program 1 times [2023-12-20 03:31:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:31:45,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930369253] [2023-12-20 03:31:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:45,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:31:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:46,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:31:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930369253] [2023-12-20 03:31:46,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930369253] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:31:46,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211753216] [2023-12-20 03:31:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:31:46,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:31:46,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:31:46,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:31:46,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 03:31:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:31:46,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-20 03:31:46,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:31:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:48,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:31:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:31:50,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211753216] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:31:50,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:31:50,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 48 [2023-12-20 03:31:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691783808] [2023-12-20 03:31:50,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:31:50,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-20 03:31:50,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:31:50,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-20 03:31:50,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 03:31:50,261 INFO L87 Difference]: Start difference. First operand 514905 states and 673907 transitions. Second operand has 48 states, 48 states have (on average 5.604166666666667) internal successors, (269), 48 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:32:50,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:32:50,231 INFO L93 Difference]: Finished difference Result 3572316 states and 4667313 transitions. [2023-12-20 03:32:50,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 464 states. [2023-12-20 03:32:50,232 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.604166666666667) internal successors, (269), 48 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 03:32:50,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:32:57,601 INFO L225 Difference]: With dead ends: 3572316 [2023-12-20 03:32:57,602 INFO L226 Difference]: Without dead ends: 3291826 [2023-12-20 03:32:58,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113552 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=28053, Invalid=227477, Unknown=0, NotChecked=0, Total=255530 [2023-12-20 03:32:58,925 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 14462 mSDsluCounter, 19537 mSDsCounter, 0 mSdLazyCounter, 7414 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14462 SdHoareTripleChecker+Valid, 20221 SdHoareTripleChecker+Invalid, 7522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:32:58,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14462 Valid, 20221 Invalid, 7522 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7414 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 03:33:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291826 states. [2023-12-20 03:33:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291826 to 794001. [2023-12-20 03:33:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794001 states, 794000 states have (on average 1.3046586901763224) internal successors, (1035899), 794000 states have internal predecessors, (1035899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:33:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794001 states to 794001 states and 1035899 transitions. [2023-12-20 03:33:36,298 INFO L78 Accepts]: Start accepts. Automaton has 794001 states and 1035899 transitions. Word has length 99 [2023-12-20 03:33:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:33:36,298 INFO L495 AbstractCegarLoop]: Abstraction has 794001 states and 1035899 transitions. [2023-12-20 03:33:36,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.604166666666667) internal successors, (269), 48 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:33:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 794001 states and 1035899 transitions. [2023-12-20 03:33:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:33:36,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:33:36,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:33:36,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 03:33:36,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 03:33:36,511 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:33:36,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:33:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2023879701, now seen corresponding path program 1 times [2023-12-20 03:33:36,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:33:36,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141476785] [2023-12-20 03:33:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:33:36,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:33:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:33:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 03:33:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:33:36,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141476785] [2023-12-20 03:33:36,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141476785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:33:36,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:33:36,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:33:36,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522744474] [2023-12-20 03:33:36,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:33:36,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:33:36,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:33:36,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:33:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:33:36,576 INFO L87 Difference]: Start difference. First operand 794001 states and 1035899 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)