/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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:17:12,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:17:13,031 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 03:17:13,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:17:13,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:17:13,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:17:13,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:17:13,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:17:13,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:17:13,072 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:17:13,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:17:13,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:17:13,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:17:13,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:17:13,075 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:17:13,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:17:13,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:17:13,076 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:17:13,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:17:13,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:17:13,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:17:13,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:17:13,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:17:13,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:17:13,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:17:13,078 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:17:13,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:17:13,079 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:17:13,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:17:13,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:17:13,080 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:17:13,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:17:13,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:17:13,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:17:13,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:17:13,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:17:13,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:17:13,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:17:13,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:17:13,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:17:13,082 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:17:13,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:17:13,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:17:13,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:17:13,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:17:13,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:17:13,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:17:13,340 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:17:13,340 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:17:13,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:17:14,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:17:14,692 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:17:14,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:17:14,700 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2594bd52e/36a8edcf8e3249d9a7f8f651b64cd52c/FLAG7c938cd37 [2023-12-20 03:17:14,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2594bd52e/36a8edcf8e3249d9a7f8f651b64cd52c [2023-12-20 03:17:14,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:17:14,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:17:14,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:17:14,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:17:14,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:17:14,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:17:14" (1/1) ... [2023-12-20 03:17:14,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636dd30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:14, skipping insertion in model container [2023-12-20 03:17:14,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:17:14" (1/1) ... [2023-12-20 03:17:14,760 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:17:14,940 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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4940,4953] [2023-12-20 03:17:14,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:17:14,982 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:17:15,012 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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4940,4953] [2023-12-20 03:17:15,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:17:15,057 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:17:15,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15 WrapperNode [2023-12-20 03:17:15,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:17:15,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:17:15,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:17:15,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:17:15,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,117 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 366 [2023-12-20 03:17:15,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:17:15,117 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:17:15,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:17:15,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:17:15,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,148 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 03:17:15,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,168 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:17:15,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:17:15,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:17:15,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:17:15,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (1/1) ... [2023-12-20 03:17:15,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:17:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:17:15,205 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 03:17:15,212 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 03:17:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:17:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:17:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:17:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:17:15,312 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:17:15,314 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:17:15,582 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:17:15,614 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:17:15,614 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:17:15,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:17:15 BoogieIcfgContainer [2023-12-20 03:17:15,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:17:15,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:17:15,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:17:15,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:17:15,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:17:14" (1/3) ... [2023-12-20 03:17:15,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550d637e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:17:15, skipping insertion in model container [2023-12-20 03:17:15,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:17:15" (2/3) ... [2023-12-20 03:17:15,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550d637e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:17:15, skipping insertion in model container [2023-12-20 03:17:15,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:17:15" (3/3) ... [2023-12-20 03:17:15,622 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:17:15,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:17:15,637 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:17:15,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:17:15,684 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;@e0e8498, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:17:15,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:17:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 03:17:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-20 03:17:15,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:15,699 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] [2023-12-20 03:17:15,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:15,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1629204617, now seen corresponding path program 1 times [2023-12-20 03:17:15,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:15,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445954731] [2023-12-20 03:17:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:15,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:17:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445954731] [2023-12-20 03:17:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445954731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:17:16,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30610280] [2023-12-20 03:17:16,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:16,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:17:16,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:17:16,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:17:16,159 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 0 states have call successors, (0), 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 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 03:17:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:16,231 INFO L93 Difference]: Finished difference Result 179 states and 288 transitions. [2023-12-20 03:17:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:17:16,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-20 03:17:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:16,256 INFO L225 Difference]: With dead ends: 179 [2023-12-20 03:17:16,256 INFO L226 Difference]: Without dead ends: 121 [2023-12-20 03:17:16,258 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 03:17:16,260 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 83 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 265 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 03:17:16,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 265 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-20 03:17:16,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-20 03:17:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 118 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 03:17:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2023-12-20 03:17:16,309 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 47 [2023-12-20 03:17:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:16,310 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2023-12-20 03:17:16,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 03:17:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2023-12-20 03:17:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-20 03:17:16,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:16,315 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] [2023-12-20 03:17:16,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:17:16,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:16,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:16,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1771605490, now seen corresponding path program 1 times [2023-12-20 03:17:16,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068994730] [2023-12-20 03:17:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:16,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:16,429 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 03:17:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:16,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068994730] [2023-12-20 03:17:16,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068994730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:16,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:16,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:17:16,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15099207] [2023-12-20 03:17:16,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:16,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:17:16,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:17:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:17:16,432 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 03:17:16,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:16,451 INFO L93 Difference]: Finished difference Result 291 states and 446 transitions. [2023-12-20 03:17:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:17:16,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-20 03:17:16,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:16,453 INFO L225 Difference]: With dead ends: 291 [2023-12-20 03:17:16,453 INFO L226 Difference]: Without dead ends: 197 [2023-12-20 03:17:16,454 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 03:17:16,455 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 62 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 229 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 03:17:16,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 229 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-20 03:17:16,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2023-12-20 03:17:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.5154639175257731) internal successors, (294), 194 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 03:17:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 294 transitions. [2023-12-20 03:17:16,471 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 294 transitions. Word has length 48 [2023-12-20 03:17:16,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:16,472 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 294 transitions. [2023-12-20 03:17:16,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 03:17:16,472 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 294 transitions. [2023-12-20 03:17:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 03:17:16,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:16,473 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] [2023-12-20 03:17:16,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:17:16,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:16,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash -445382270, now seen corresponding path program 1 times [2023-12-20 03:17:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073037237] [2023-12-20 03:17:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:16,577 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 03:17:16,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:16,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073037237] [2023-12-20 03:17:16,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073037237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:16,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:16,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:17:16,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772842219] [2023-12-20 03:17:16,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:16,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:17:16,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:16,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:17:16,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:17:16,580 INFO L87 Difference]: Start difference. First operand 195 states and 294 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 03:17:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:16,596 INFO L93 Difference]: Finished difference Result 503 states and 780 transitions. [2023-12-20 03:17:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:17:16,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-20 03:17:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:16,599 INFO L225 Difference]: With dead ends: 503 [2023-12-20 03:17:16,599 INFO L226 Difference]: Without dead ends: 333 [2023-12-20 03:17:16,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:17:16,601 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 57 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 225 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 03:17:16,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 225 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-20 03:17:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2023-12-20 03:17:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.5333333333333334) internal successors, (506), 330 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 03:17:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 506 transitions. [2023-12-20 03:17:16,617 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 506 transitions. Word has length 49 [2023-12-20 03:17:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:16,617 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 506 transitions. [2023-12-20 03:17:16,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 03:17:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 506 transitions. [2023-12-20 03:17:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 03:17:16,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:16,619 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] [2023-12-20 03:17:16,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:17:16,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:16,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1984957637, now seen corresponding path program 1 times [2023-12-20 03:17:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:16,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230404353] [2023-12-20 03:17:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:16,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:16,774 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 03:17:16,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:16,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230404353] [2023-12-20 03:17:16,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230404353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:16,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:16,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:17:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569984766] [2023-12-20 03:17:16,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:16,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:17:16,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:17:16,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:17:16,778 INFO L87 Difference]: Start difference. First operand 331 states and 506 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 03:17:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:16,969 INFO L93 Difference]: Finished difference Result 2779 states and 4354 transitions. [2023-12-20 03:17:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:17:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-20 03:17:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:16,980 INFO L225 Difference]: With dead ends: 2779 [2023-12-20 03:17:16,981 INFO L226 Difference]: Without dead ends: 2473 [2023-12-20 03:17:16,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:17:16,990 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 697 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:16,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1113 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:17:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2023-12-20 03:17:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 635. [2023-12-20 03:17:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.5299684542586751) internal successors, (970), 634 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 03:17:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 970 transitions. [2023-12-20 03:17:17,031 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 970 transitions. Word has length 50 [2023-12-20 03:17:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:17,031 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 970 transitions. [2023-12-20 03:17:17,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 03:17:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 970 transitions. [2023-12-20 03:17:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 03:17:17,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:17,033 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] [2023-12-20 03:17:17,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:17:17,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:17,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash -322009632, now seen corresponding path program 1 times [2023-12-20 03:17:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:17,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618692519] [2023-12-20 03:17:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:17,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:17,322 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 03:17:17,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:17,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618692519] [2023-12-20 03:17:17,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618692519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:17,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:17,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:17:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372206632] [2023-12-20 03:17:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:17,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:17:17,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:17:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:17:17,326 INFO L87 Difference]: Start difference. First operand 635 states and 970 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 03:17:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:17,427 INFO L93 Difference]: Finished difference Result 1247 states and 1916 transitions. [2023-12-20 03:17:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:17:17,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-20 03:17:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:17,432 INFO L225 Difference]: With dead ends: 1247 [2023-12-20 03:17:17,432 INFO L226 Difference]: Without dead ends: 637 [2023-12-20 03:17:17,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:17:17,438 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 220 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:17,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 334 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-12-20 03:17:17,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 635. [2023-12-20 03:17:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.5173501577287065) internal successors, (962), 634 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 03:17:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 962 transitions. [2023-12-20 03:17:17,454 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 962 transitions. Word has length 52 [2023-12-20 03:17:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:17,455 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 962 transitions. [2023-12-20 03:17:17,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 03:17:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 962 transitions. [2023-12-20 03:17:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 03:17:17,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:17,459 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] [2023-12-20 03:17:17,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:17:17,460 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:17,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:17,461 INFO L85 PathProgramCache]: Analyzing trace with hash -343012287, now seen corresponding path program 1 times [2023-12-20 03:17:17,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:17,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279805753] [2023-12-20 03:17:17,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:17,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:17,572 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 03:17:17,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:17,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279805753] [2023-12-20 03:17:17,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279805753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:17,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:17,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:17:17,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21491648] [2023-12-20 03:17:17,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:17,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:17:17,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:17:17,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:17:17,575 INFO L87 Difference]: Start difference. First operand 635 states and 962 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 03:17:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:17,599 INFO L93 Difference]: Finished difference Result 1767 states and 2684 transitions. [2023-12-20 03:17:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:17:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-20 03:17:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:17,605 INFO L225 Difference]: With dead ends: 1767 [2023-12-20 03:17:17,606 INFO L226 Difference]: Without dead ends: 1157 [2023-12-20 03:17:17,607 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 03:17:17,608 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 47 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 179 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 03:17:17,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 179 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-12-20 03:17:17,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1139. [2023-12-20 03:17:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.4850615114235501) internal successors, (1690), 1138 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states 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 03:17:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1690 transitions. [2023-12-20 03:17:17,640 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1690 transitions. Word has length 52 [2023-12-20 03:17:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:17,640 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1690 transitions. [2023-12-20 03:17:17,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 03:17:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1690 transitions. [2023-12-20 03:17:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 03:17:17,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:17,642 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] [2023-12-20 03:17:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:17:17,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:17,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1394273389, now seen corresponding path program 1 times [2023-12-20 03:17:17,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:17,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010063380] [2023-12-20 03:17:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:17,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:17,743 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 03:17:17,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:17,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010063380] [2023-12-20 03:17:17,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010063380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:17,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:17,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:17:17,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233448853] [2023-12-20 03:17:17,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:17,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:17:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:17:17,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:17:17,745 INFO L87 Difference]: Start difference. First operand 1139 states and 1690 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:17,810 INFO L93 Difference]: Finished difference Result 2253 states and 3355 transitions. [2023-12-20 03:17:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:17:17,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 03:17:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:17,814 INFO L225 Difference]: With dead ends: 2253 [2023-12-20 03:17:17,814 INFO L226 Difference]: Without dead ends: 1139 [2023-12-20 03:17:17,815 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 03:17:17,816 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 258 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:17,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 84 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-12-20 03:17:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2023-12-20 03:17:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.4710017574692442) internal successors, (1674), 1138 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states 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 03:17:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1674 transitions. [2023-12-20 03:17:17,836 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1674 transitions. Word has length 53 [2023-12-20 03:17:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:17,837 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1674 transitions. [2023-12-20 03:17:17,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1674 transitions. [2023-12-20 03:17:17,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 03:17:17,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:17,838 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] [2023-12-20 03:17:17,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:17:17,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:17,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:17,839 INFO L85 PathProgramCache]: Analyzing trace with hash -528741000, now seen corresponding path program 1 times [2023-12-20 03:17:17,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:17,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540913331] [2023-12-20 03:17:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:17,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:17,918 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 03:17:17,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:17,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540913331] [2023-12-20 03:17:17,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540913331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:17,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:17,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:17:17,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45560925] [2023-12-20 03:17:17,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:17,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:17:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:17:17,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:17:17,920 INFO L87 Difference]: Start difference. First operand 1139 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:17,986 INFO L93 Difference]: Finished difference Result 2253 states and 3323 transitions. [2023-12-20 03:17:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:17:17,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 03:17:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:17,991 INFO L225 Difference]: With dead ends: 2253 [2023-12-20 03:17:17,991 INFO L226 Difference]: Without dead ends: 1139 [2023-12-20 03:17:17,992 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 03:17:17,993 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 242 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:17,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 92 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-12-20 03:17:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2023-12-20 03:17:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.4569420035149385) internal successors, (1658), 1138 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states 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 03:17:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1658 transitions. [2023-12-20 03:17:18,018 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1658 transitions. Word has length 53 [2023-12-20 03:17:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:18,018 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1658 transitions. [2023-12-20 03:17:18,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1658 transitions. [2023-12-20 03:17:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 03:17:18,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:18,019 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] [2023-12-20 03:17:18,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:17:18,020 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:18,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:18,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1058031501, now seen corresponding path program 1 times [2023-12-20 03:17:18,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:18,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752756893] [2023-12-20 03:17:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:18,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:18,097 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 03:17:18,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752756893] [2023-12-20 03:17:18,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752756893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:18,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:18,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:17:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79485322] [2023-12-20 03:17:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:17:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:17:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:17:18,100 INFO L87 Difference]: Start difference. First operand 1139 states and 1658 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:18,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:18,161 INFO L93 Difference]: Finished difference Result 2253 states and 3291 transitions. [2023-12-20 03:17:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:17:18,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 03:17:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:18,165 INFO L225 Difference]: With dead ends: 2253 [2023-12-20 03:17:18,166 INFO L226 Difference]: Without dead ends: 1139 [2023-12-20 03:17:18,170 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 03:17:18,172 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 265 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:18,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 76 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-12-20 03:17:18,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2023-12-20 03:17:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.4428822495606326) internal successors, (1642), 1138 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states 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 03:17:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1642 transitions. [2023-12-20 03:17:18,196 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1642 transitions. Word has length 53 [2023-12-20 03:17:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:18,196 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1642 transitions. [2023-12-20 03:17:18,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1642 transitions. [2023-12-20 03:17:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 03:17:18,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:18,197 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] [2023-12-20 03:17:18,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:17:18,197 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:18,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:18,198 INFO L85 PathProgramCache]: Analyzing trace with hash -929946194, now seen corresponding path program 1 times [2023-12-20 03:17:18,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:18,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880410033] [2023-12-20 03:17:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:18,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:18,394 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 03:17:18,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:18,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880410033] [2023-12-20 03:17:18,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880410033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:18,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:18,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:17:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376946706] [2023-12-20 03:17:18,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:18,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:17:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:17:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:17:18,396 INFO L87 Difference]: Start difference. First operand 1139 states and 1642 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:18,437 INFO L93 Difference]: Finished difference Result 1928 states and 2779 transitions. [2023-12-20 03:17:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:17:18,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 03:17:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:18,443 INFO L225 Difference]: With dead ends: 1928 [2023-12-20 03:17:18,443 INFO L226 Difference]: Without dead ends: 1926 [2023-12-20 03:17:18,444 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 03:17:18,444 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 142 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:18,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 502 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2023-12-20 03:17:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1171. [2023-12-20 03:17:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.423931623931624) internal successors, (1666), 1170 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states 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 03:17:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1666 transitions. [2023-12-20 03:17:18,471 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1666 transitions. Word has length 53 [2023-12-20 03:17:18,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:18,471 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1666 transitions. [2023-12-20 03:17:18,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1666 transitions. [2023-12-20 03:17:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 03:17:18,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:18,472 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] [2023-12-20 03:17:18,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:17:18,473 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:18,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1102304960, now seen corresponding path program 1 times [2023-12-20 03:17:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:18,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583983052] [2023-12-20 03:17:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:18,513 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 03:17:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583983052] [2023-12-20 03:17:18,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583983052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:18,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:18,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:17:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740528467] [2023-12-20 03:17:18,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:18,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:17:18,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:18,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:17:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:17:18,515 INFO L87 Difference]: Start difference. First operand 1171 states and 1666 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:18,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:18,532 INFO L93 Difference]: Finished difference Result 2298 states and 3304 transitions. [2023-12-20 03:17:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:17:18,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 03:17:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:18,537 INFO L225 Difference]: With dead ends: 2298 [2023-12-20 03:17:18,538 INFO L226 Difference]: Without dead ends: 1655 [2023-12-20 03:17:18,539 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 03:17:18,539 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 66 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 232 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 03:17:18,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 232 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:18,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2023-12-20 03:17:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1653. [2023-12-20 03:17:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 1.4164648910411621) internal successors, (2340), 1652 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states 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 03:17:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2340 transitions. [2023-12-20 03:17:18,567 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2340 transitions. Word has length 53 [2023-12-20 03:17:18,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:18,568 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2340 transitions. [2023-12-20 03:17:18,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:17:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2340 transitions. [2023-12-20 03:17:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:17:18,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:18,569 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:17:18,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:17:18,570 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:18,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash -363391418, now seen corresponding path program 1 times [2023-12-20 03:17:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:18,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612677430] [2023-12-20 03:17:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:17:18,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:18,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612677430] [2023-12-20 03:17:18,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612677430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:18,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:18,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:17:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988130495] [2023-12-20 03:17:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:18,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:17:18,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:18,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:17:18,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:17:18,671 INFO L87 Difference]: Start difference. First operand 1653 states and 2340 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 03:17:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:18,773 INFO L93 Difference]: Finished difference Result 8471 states and 12021 transitions. [2023-12-20 03:17:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:17:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:17:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:18,794 INFO L225 Difference]: With dead ends: 8471 [2023-12-20 03:17:18,794 INFO L226 Difference]: Without dead ends: 6845 [2023-12-20 03:17:18,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:17:18,798 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 489 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:18,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 546 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2023-12-20 03:17:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 3277. [2023-12-20 03:17:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3276 states have (on average 1.4126984126984128) internal successors, (4628), 3276 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states 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 03:17:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 4628 transitions. [2023-12-20 03:17:18,868 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 4628 transitions. Word has length 76 [2023-12-20 03:17:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:18,868 INFO L495 AbstractCegarLoop]: Abstraction has 3277 states and 4628 transitions. [2023-12-20 03:17:18,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 03:17:18,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 4628 transitions. [2023-12-20 03:17:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:17:18,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:18,870 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:17:18,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:17:18,870 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:18,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:18,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1517337524, now seen corresponding path program 1 times [2023-12-20 03:17:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:18,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490984011] [2023-12-20 03:17:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:18,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 03:17:18,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:18,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490984011] [2023-12-20 03:17:18,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490984011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:18,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:17:18,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751366911] [2023-12-20 03:17:18,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:18,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:17:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:17:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:17:18,992 INFO L87 Difference]: Start difference. First operand 3277 states and 4628 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 03:17:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:19,088 INFO L93 Difference]: Finished difference Result 10095 states and 14309 transitions. [2023-12-20 03:17:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:17:19,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:17:19,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:19,114 INFO L225 Difference]: With dead ends: 10095 [2023-12-20 03:17:19,114 INFO L226 Difference]: Without dead ends: 8469 [2023-12-20 03:17:19,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:17:19,119 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 476 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:19,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 561 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8469 states. [2023-12-20 03:17:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8469 to 5717. [2023-12-20 03:17:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5717 states, 5716 states have (on average 1.4065780265920225) internal successors, (8040), 5716 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states 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 03:17:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 8040 transitions. [2023-12-20 03:17:19,241 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 8040 transitions. Word has length 76 [2023-12-20 03:17:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:19,241 INFO L495 AbstractCegarLoop]: Abstraction has 5717 states and 8040 transitions. [2023-12-20 03:17:19,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 03:17:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 8040 transitions. [2023-12-20 03:17:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:17:19,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:19,243 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:17:19,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:17:19,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:19,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1221292096, now seen corresponding path program 1 times [2023-12-20 03:17:19,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:19,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451464148] [2023-12-20 03:17:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:19,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 03:17:19,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:19,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451464148] [2023-12-20 03:17:19,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451464148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:19,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:19,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:17:19,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125737067] [2023-12-20 03:17:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:19,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:17:19,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:17:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:17:19,345 INFO L87 Difference]: Start difference. First operand 5717 states and 8040 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 03:17:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:19,436 INFO L93 Difference]: Finished difference Result 11719 states and 16597 transitions. [2023-12-20 03:17:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:17:19,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:17:19,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:19,453 INFO L225 Difference]: With dead ends: 11719 [2023-12-20 03:17:19,454 INFO L226 Difference]: Without dead ends: 10093 [2023-12-20 03:17:19,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:17:19,459 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 441 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:19,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 643 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2023-12-20 03:17:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 7341. [2023-12-20 03:17:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7341 states, 7340 states have (on average 1.40708446866485) internal successors, (10328), 7340 states have internal predecessors, (10328), 0 states have call successors, (0), 0 states 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 03:17:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7341 states to 7341 states and 10328 transitions. [2023-12-20 03:17:19,589 INFO L78 Accepts]: Start accepts. Automaton has 7341 states and 10328 transitions. Word has length 76 [2023-12-20 03:17:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:19,590 INFO L495 AbstractCegarLoop]: Abstraction has 7341 states and 10328 transitions. [2023-12-20 03:17:19,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 03:17:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7341 states and 10328 transitions. [2023-12-20 03:17:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 03:17:19,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:19,592 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:17:19,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:17:19,592 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:19,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:19,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1706727076, now seen corresponding path program 1 times [2023-12-20 03:17:19,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:19,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386963347] [2023-12-20 03:17:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:17:19,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:19,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386963347] [2023-12-20 03:17:19,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386963347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:19,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:19,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:17:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485890754] [2023-12-20 03:17:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:19,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:17:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:17:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:17:19,709 INFO L87 Difference]: Start difference. First operand 7341 states and 10328 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:17:19,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:19,805 INFO L93 Difference]: Finished difference Result 12335 states and 17493 transitions. [2023-12-20 03:17:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:17:19,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-20 03:17:19,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:19,822 INFO L225 Difference]: With dead ends: 12335 [2023-12-20 03:17:19,822 INFO L226 Difference]: Without dead ends: 11213 [2023-12-20 03:17:19,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:17:19,828 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 432 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:19,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 600 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:19,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2023-12-20 03:17:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 8461. [2023-12-20 03:17:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8461 states, 8460 states have (on average 1.4099290780141844) internal successors, (11928), 8460 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states 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 03:17:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8461 states to 8461 states and 11928 transitions. [2023-12-20 03:17:19,981 INFO L78 Accepts]: Start accepts. Automaton has 8461 states and 11928 transitions. Word has length 77 [2023-12-20 03:17:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:19,981 INFO L495 AbstractCegarLoop]: Abstraction has 8461 states and 11928 transitions. [2023-12-20 03:17:19,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:17:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 8461 states and 11928 transitions. [2023-12-20 03:17:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 03:17:19,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:19,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:17:19,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:17:19,983 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:19,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2067346209, now seen corresponding path program 1 times [2023-12-20 03:17:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:19,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451220000] [2023-12-20 03:17:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:20,072 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 03:17:20,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451220000] [2023-12-20 03:17:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451220000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:17:20,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:17:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:17:20,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036906497] [2023-12-20 03:17:20,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:17:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:17:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:17:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:17:20,076 INFO L87 Difference]: Start difference. First operand 8461 states and 11928 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 03:17:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:20,115 INFO L93 Difference]: Finished difference Result 14657 states and 20768 transitions. [2023-12-20 03:17:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:17:20,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 03:17:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:20,124 INFO L225 Difference]: With dead ends: 14657 [2023-12-20 03:17:20,124 INFO L226 Difference]: Without dead ends: 6223 [2023-12-20 03:17:20,132 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 03:17:20,133 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 48 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 224 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 03:17:20,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:17:20,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6223 states. [2023-12-20 03:17:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6223 to 6221. [2023-12-20 03:17:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 6220 states have (on average 1.4110932475884244) internal successors, (8777), 6220 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states 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 03:17:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 8777 transitions. [2023-12-20 03:17:20,212 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 8777 transitions. Word has length 78 [2023-12-20 03:17:20,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:20,212 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 8777 transitions. [2023-12-20 03:17:20,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 03:17:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 8777 transitions. [2023-12-20 03:17:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 03:17:20,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:20,214 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] [2023-12-20 03:17:20,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:17:20,214 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:20,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash 652706646, now seen corresponding path program 1 times [2023-12-20 03:17:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:20,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918622477] [2023-12-20 03:17:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:20,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:20,666 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 03:17:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918622477] [2023-12-20 03:17:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918622477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:17:20,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416176631] [2023-12-20 03:17:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:20,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:17:20,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:17:20,672 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 03:17:20,696 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 03:17:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:20,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 03:17:20,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:17:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:17:20,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:17:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:17:21,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416176631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:17:21,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:17:21,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-20 03:17:21,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533708386] [2023-12-20 03:17:21,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:17:21,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 03:17:21,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:21,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 03:17:21,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:17:21,145 INFO L87 Difference]: Start difference. First operand 6221 states and 8777 transitions. Second operand has 17 states, 17 states have (on average 13.0) internal successors, (221), 17 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 03:17:26,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:26,630 INFO L93 Difference]: Finished difference Result 100163 states and 138204 transitions. [2023-12-20 03:17:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-12-20 03:17:26,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.0) internal successors, (221), 17 states have internal predecessors, (221), 0 states have call successors, (0), 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 78 [2023-12-20 03:17:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:26,909 INFO L225 Difference]: With dead ends: 100163 [2023-12-20 03:17:26,909 INFO L226 Difference]: Without dead ends: 93971 [2023-12-20 03:17:26,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9498 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3106, Invalid=19544, Unknown=0, NotChecked=0, Total=22650 [2023-12-20 03:17:26,955 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 6633 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6633 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:26,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6633 Valid, 1510 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 03:17:27,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93971 states. [2023-12-20 03:17:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93971 to 46151. [2023-12-20 03:17:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46151 states, 46150 states have (on average 1.3439653304442036) internal successors, (62024), 46150 states have internal predecessors, (62024), 0 states have call successors, (0), 0 states 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 03:17:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46151 states to 46151 states and 62024 transitions. [2023-12-20 03:17:27,970 INFO L78 Accepts]: Start accepts. Automaton has 46151 states and 62024 transitions. Word has length 78 [2023-12-20 03:17:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:27,970 INFO L495 AbstractCegarLoop]: Abstraction has 46151 states and 62024 transitions. [2023-12-20 03:17:27,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.0) internal successors, (221), 17 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 03:17:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 46151 states and 62024 transitions. [2023-12-20 03:17:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 03:17:27,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:27,975 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:17:27,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 03:17:28,181 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,SelfDestructingSolverStorable16 [2023-12-20 03:17:28,182 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:28,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2115467936, now seen corresponding path program 1 times [2023-12-20 03:17:28,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295832420] [2023-12-20 03:17:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:28,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:17:28,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:28,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295832420] [2023-12-20 03:17:28,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295832420] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:17:28,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553093480] [2023-12-20 03:17:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:28,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:17:28,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:17:28,446 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 03:17:28,450 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 03:17:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:28,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:17:28,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:17:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:17:29,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:17:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:17:29,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553093480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:17:29,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:17:29,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-20 03:17:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638366155] [2023-12-20 03:17:29,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:17:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 03:17:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:17:29,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 03:17:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-20 03:17:29,692 INFO L87 Difference]: Start difference. First operand 46151 states and 62024 transitions. Second operand has 23 states, 23 states have (on average 9.608695652173912) internal successors, (221), 22 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 03:17:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:17:47,934 INFO L93 Difference]: Finished difference Result 1121950 states and 1470468 transitions. [2023-12-20 03:17:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 381 states. [2023-12-20 03:17:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.608695652173912) internal successors, (221), 22 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-20 03:17:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:17:49,888 INFO L225 Difference]: With dead ends: 1121950 [2023-12-20 03:17:49,888 INFO L226 Difference]: Without dead ends: 1077694 [2023-12-20 03:17:50,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73213 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=16554, Invalid=144648, Unknown=0, NotChecked=0, Total=161202 [2023-12-20 03:17:50,270 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 9952 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9952 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 03:17:50,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9952 Valid, 3251 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 03:17:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077694 states. [2023-12-20 03:17:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077694 to 257362. [2023-12-20 03:17:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257362 states, 257361 states have (on average 1.3401408915880806) internal successors, (344900), 257361 states have internal predecessors, (344900), 0 states have call successors, (0), 0 states 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 03:17:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257362 states to 257362 states and 344900 transitions. [2023-12-20 03:17:58,550 INFO L78 Accepts]: Start accepts. Automaton has 257362 states and 344900 transitions. Word has length 79 [2023-12-20 03:17:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:17:58,550 INFO L495 AbstractCegarLoop]: Abstraction has 257362 states and 344900 transitions. [2023-12-20 03:17:58,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.608695652173912) internal successors, (221), 22 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 03:17:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 257362 states and 344900 transitions. [2023-12-20 03:17:58,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 03:17:58,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:17:58,556 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:17:58,564 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 03:17:58,760 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,SelfDestructingSolverStorable17 [2023-12-20 03:17:58,760 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:17:58,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:17:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash 362826950, now seen corresponding path program 1 times [2023-12-20 03:17:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:17:58,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557312127] [2023-12-20 03:17:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:58,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:17:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:17:58,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:17:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557312127] [2023-12-20 03:17:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557312127] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:17:59,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118058049] [2023-12-20 03:17:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:17:59,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:17:59,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:17:59,001 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 03:17:59,003 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 03:17:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:17:59,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 03:17:59,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:17:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:17:59,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:18:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:18:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118058049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:18:00,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:18:00,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-12-20 03:18:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223319368] [2023-12-20 03:18:00,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:18:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 03:18:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:18:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 03:18:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-20 03:18:00,210 INFO L87 Difference]: Start difference. First operand 257362 states and 344900 transitions. Second operand has 20 states, 20 states have (on average 9.1) internal successors, (182), 19 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 03:18:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:18:04,236 INFO L93 Difference]: Finished difference Result 1178963 states and 1569145 transitions. [2023-12-20 03:18:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 03:18:04,237 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.1) internal successors, (182), 19 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-20 03:18:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:18:06,050 INFO L225 Difference]: With dead ends: 1178963 [2023-12-20 03:18:06,050 INFO L226 Difference]: Without dead ends: 943546 [2023-12-20 03:18:06,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=546, Invalid=1710, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 03:18:06,291 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1853 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:18:06,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 1074 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 03:18:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943546 states. [2023-12-20 03:18:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943546 to 522781. [2023-12-20 03:18:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522781 states, 522780 states have (on average 1.328665978040476) internal successors, (694600), 522780 states have internal predecessors, (694600), 0 states have call successors, (0), 0 states 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 03:18:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522781 states to 522781 states and 694600 transitions. [2023-12-20 03:18:16,250 INFO L78 Accepts]: Start accepts. Automaton has 522781 states and 694600 transitions. Word has length 80 [2023-12-20 03:18:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:18:16,250 INFO L495 AbstractCegarLoop]: Abstraction has 522781 states and 694600 transitions. [2023-12-20 03:18:16,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.1) internal successors, (182), 19 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 03:18:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 522781 states and 694600 transitions. [2023-12-20 03:18:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 03:18:16,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:18:16,255 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:18:16,260 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 03:18:16,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:18:16,457 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:18:16,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:18:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1253024599, now seen corresponding path program 1 times [2023-12-20 03:18:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:18:16,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017434156] [2023-12-20 03:18:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:18:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:18:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:18:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:18:16,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:18:16,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017434156] [2023-12-20 03:18:16,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017434156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:18:16,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:18:16,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:18:16,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112346700] [2023-12-20 03:18:16,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:18:16,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:18:16,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:18:16,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:18:16,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:18:16,532 INFO L87 Difference]: Start difference. First operand 522781 states and 694600 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 03:18:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:18:18,961 INFO L93 Difference]: Finished difference Result 759365 states and 1007062 transitions. [2023-12-20 03:18:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:18:18,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-20 03:18:18,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:18:19,585 INFO L225 Difference]: With dead ends: 759365 [2023-12-20 03:18:19,585 INFO L226 Difference]: Without dead ends: 270093 [2023-12-20 03:18:20,135 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 03:18:20,136 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 39 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 208 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 03:18:20,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 208 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:18:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270093 states. [2023-12-20 03:18:23,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270093 to 266311. [2023-12-20 03:18:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266311 states, 266310 states have (on average 1.3024482745672337) internal successors, (346855), 266310 states have internal predecessors, (346855), 0 states have call successors, (0), 0 states 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 03:18:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266311 states to 266311 states and 346855 transitions. [2023-12-20 03:18:24,364 INFO L78 Accepts]: Start accepts. Automaton has 266311 states and 346855 transitions. Word has length 81 [2023-12-20 03:18:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:18:24,364 INFO L495 AbstractCegarLoop]: Abstraction has 266311 states and 346855 transitions. [2023-12-20 03:18:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 03:18:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 266311 states and 346855 transitions. [2023-12-20 03:18:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 03:18:24,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:18:24,369 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:18:24,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:18:24,369 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:18:24,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:18:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1538765044, now seen corresponding path program 1 times [2023-12-20 03:18:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:18:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562573855] [2023-12-20 03:18:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:18:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:18:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:18:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:18:24,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:18:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562573855] [2023-12-20 03:18:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562573855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:18:24,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:18:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:18:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871068682] [2023-12-20 03:18:24,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:18:24,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:18:24,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:18:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:18:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:18:24,433 INFO L87 Difference]: Start difference. First operand 266311 states and 346855 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 03:18:25,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:18:25,516 INFO L93 Difference]: Finished difference Result 404309 states and 523962 transitions. [2023-12-20 03:18:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:18:25,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-20 03:18:25,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:18:25,712 INFO L225 Difference]: With dead ends: 404309 [2023-12-20 03:18:25,712 INFO L226 Difference]: Without dead ends: 163428 [2023-12-20 03:18:25,822 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 03:18:25,823 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 32 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 193 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 03:18:25,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 193 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:18:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163428 states. [2023-12-20 03:18:27,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163428 to 163426. [2023-12-20 03:18:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163426 states, 163425 states have (on average 1.2703319565549946) internal successors, (207604), 163425 states have internal predecessors, (207604), 0 states have call successors, (0), 0 states 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 03:18:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163426 states to 163426 states and 207604 transitions. [2023-12-20 03:18:27,719 INFO L78 Accepts]: Start accepts. Automaton has 163426 states and 207604 transitions. Word has length 81 [2023-12-20 03:18:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:18:27,719 INFO L495 AbstractCegarLoop]: Abstraction has 163426 states and 207604 transitions. [2023-12-20 03:18:27,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 03:18:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 163426 states and 207604 transitions. [2023-12-20 03:18:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 03:18:27,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:18:27,722 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:18:27,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:18:27,723 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:18:27,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:18:27,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1100037876, now seen corresponding path program 1 times [2023-12-20 03:18:27,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:18:27,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102540556] [2023-12-20 03:18:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:18:27,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:18:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:18:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:18:28,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:18:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102540556] [2023-12-20 03:18:28,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102540556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:18:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184384933] [2023-12-20 03:18:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:18:28,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:18:28,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:18:28,750 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 03:18:28,753 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 03:18:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:18:28,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:18:28,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:18:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:18:29,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:18:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:18:30,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184384933] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:18:30,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:18:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 31 [2023-12-20 03:18:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835872643] [2023-12-20 03:18:30,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:18:30,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 03:18:30,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:18:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 03:18:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2023-12-20 03:18:30,399 INFO L87 Difference]: Start difference. First operand 163426 states and 207604 transitions. Second operand has 32 states, 32 states have (on average 6.5625) internal successors, (210), 31 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 03:19:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:19:11,869 INFO L93 Difference]: Finished difference Result 845707 states and 1079294 transitions. [2023-12-20 03:19:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 459 states. [2023-12-20 03:19:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5625) internal successors, (210), 31 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 81 [2023-12-20 03:19:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:19:13,221 INFO L225 Difference]: With dead ends: 845707 [2023-12-20 03:19:13,222 INFO L226 Difference]: Without dead ends: 755937 [2023-12-20 03:19:13,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106649 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=22686, Invalid=210120, Unknown=0, NotChecked=0, Total=232806 [2023-12-20 03:19:13,441 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 11539 mSDsluCounter, 14390 mSDsCounter, 0 mSdLazyCounter, 3956 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11539 SdHoareTripleChecker+Valid, 15187 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:19:13,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11539 Valid, 15187 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3956 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 03:19:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755937 states. [2023-12-20 03:19:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755937 to 158505. [2023-12-20 03:19:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158505 states, 158504 states have (on average 1.2760687427446626) internal successors, (202262), 158504 states have internal predecessors, (202262), 0 states have call successors, (0), 0 states 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 03:19:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158505 states to 158505 states and 202262 transitions. [2023-12-20 03:19:18,037 INFO L78 Accepts]: Start accepts. Automaton has 158505 states and 202262 transitions. Word has length 81 [2023-12-20 03:19:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:19:18,037 INFO L495 AbstractCegarLoop]: Abstraction has 158505 states and 202262 transitions. [2023-12-20 03:19:18,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.5625) internal successors, (210), 31 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 03:19:18,037 INFO L276 IsEmpty]: Start isEmpty. Operand 158505 states and 202262 transitions. [2023-12-20 03:19:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 03:19:18,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:19:18,040 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:19:18,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 03:19:18,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:19:18,246 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:19:18,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:19:18,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1607974892, now seen corresponding path program 1 times [2023-12-20 03:19:18,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:19:18,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672757389] [2023-12-20 03:19:18,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:19:18,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:19:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:19:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:19:18,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:19:18,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672757389] [2023-12-20 03:19:18,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672757389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:19:18,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995016843] [2023-12-20 03:19:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:19:18,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:19:18,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:19:18,802 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 03:19:18,804 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 03:19:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:19:18,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 03:19:18,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:19:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:19:20,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:19:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:19:20,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995016843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:19:20,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:19:20,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-20 03:19:20,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619038547] [2023-12-20 03:19:20,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:19:20,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 03:19:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:19:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 03:19:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 03:19:20,680 INFO L87 Difference]: Start difference. First operand 158505 states and 202262 transitions. Second operand has 33 states, 33 states have (on average 6.666666666666667) internal successors, (220), 32 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 03:19:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:19:47,585 INFO L93 Difference]: Finished difference Result 847035 states and 1063165 transitions. [2023-12-20 03:19:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2023-12-20 03:19:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.666666666666667) internal successors, (220), 32 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 81 [2023-12-20 03:19:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:19:49,458 INFO L225 Difference]: With dead ends: 847035 [2023-12-20 03:19:49,458 INFO L226 Difference]: Without dead ends: 763760 [2023-12-20 03:19:49,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27176 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=10973, Invalid=62197, Unknown=0, NotChecked=0, Total=73170 [2023-12-20 03:19:49,647 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 6531 mSDsluCounter, 11106 mSDsCounter, 0 mSdLazyCounter, 4132 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6531 SdHoareTripleChecker+Valid, 11861 SdHoareTripleChecker+Invalid, 4147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:19:49,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6531 Valid, 11861 Invalid, 4147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4132 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 03:19:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763760 states. [2023-12-20 03:19:54,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763760 to 261611. [2023-12-20 03:19:54,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261611 states, 261610 states have (on average 1.2786284927946179) internal successors, (334502), 261610 states have internal predecessors, (334502), 0 states have call successors, (0), 0 states 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 03:19:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261611 states to 261611 states and 334502 transitions. [2023-12-20 03:19:55,392 INFO L78 Accepts]: Start accepts. Automaton has 261611 states and 334502 transitions. Word has length 81 [2023-12-20 03:19:55,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:19:55,392 INFO L495 AbstractCegarLoop]: Abstraction has 261611 states and 334502 transitions. [2023-12-20 03:19:55,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.666666666666667) internal successors, (220), 32 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 03:19:55,393 INFO L276 IsEmpty]: Start isEmpty. Operand 261611 states and 334502 transitions. [2023-12-20 03:19:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 03:19:55,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:19:55,395 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] [2023-12-20 03:19:55,400 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 03:19:55,599 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,SelfDestructingSolverStorable22 [2023-12-20 03:19:55,600 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:19:55,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:19:55,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1395531153, now seen corresponding path program 1 times [2023-12-20 03:19:55,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:19:55,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201034458] [2023-12-20 03:19:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:19:55,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:19:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:19:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 03:19:55,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:19:55,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201034458] [2023-12-20 03:19:55,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201034458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:19:55,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:19:55,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:19:55,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957214016] [2023-12-20 03:19:55,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:19:55,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:19:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:19:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:19:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:19:55,636 INFO L87 Difference]: Start difference. First operand 261611 states and 334502 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:19:56,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:19:56,647 INFO L93 Difference]: Finished difference Result 345209 states and 442302 transitions. [2023-12-20 03:19:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:19:56,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-20 03:19:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:19:56,741 INFO L225 Difference]: With dead ends: 345209 [2023-12-20 03:19:56,742 INFO L226 Difference]: Without dead ends: 83824 [2023-12-20 03:19:56,815 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 03:19:56,816 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 57 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:19:56,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 96 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:19:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83824 states. [2023-12-20 03:19:57,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83824 to 83824. [2023-12-20 03:19:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83824 states, 83823 states have (on average 1.2682199396347065) internal successors, (106306), 83823 states have internal predecessors, (106306), 0 states have call successors, (0), 0 states 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 03:19:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83824 states to 83824 states and 106306 transitions. [2023-12-20 03:19:57,948 INFO L78 Accepts]: Start accepts. Automaton has 83824 states and 106306 transitions. Word has length 83 [2023-12-20 03:19:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:19:57,948 INFO L495 AbstractCegarLoop]: Abstraction has 83824 states and 106306 transitions. [2023-12-20 03:19:57,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:19:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 83824 states and 106306 transitions. [2023-12-20 03:19:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 03:19:57,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:19:57,949 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] [2023-12-20 03:19:57,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 03:19:57,950 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:19:57,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:19:57,950 INFO L85 PathProgramCache]: Analyzing trace with hash 915897671, now seen corresponding path program 1 times [2023-12-20 03:19:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:19:57,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772252372] [2023-12-20 03:19:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:19:57,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:19:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:19:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:19:57,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:19:57,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772252372] [2023-12-20 03:19:57,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772252372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:19:57,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:19:57,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:19:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447318688] [2023-12-20 03:19:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:19:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:19:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:19:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:19:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:19:57,995 INFO L87 Difference]: Start difference. First operand 83824 states and 106306 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 03:19:58,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:19:58,253 INFO L93 Difference]: Finished difference Result 136725 states and 173584 transitions. [2023-12-20 03:19:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:19:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 83 [2023-12-20 03:19:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:19:58,311 INFO L225 Difference]: With dead ends: 136725 [2023-12-20 03:19:58,311 INFO L226 Difference]: Without dead ends: 53217 [2023-12-20 03:19:58,351 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 03:19:58,351 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 56 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:19:58,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 100 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:19:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53217 states. [2023-12-20 03:19:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53217 to 53217. [2023-12-20 03:19:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53217 states, 53216 states have (on average 1.2537018941671678) internal successors, (66717), 53216 states have internal predecessors, (66717), 0 states have call successors, (0), 0 states 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 03:19:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53217 states to 53217 states and 66717 transitions. [2023-12-20 03:19:59,053 INFO L78 Accepts]: Start accepts. Automaton has 53217 states and 66717 transitions. Word has length 83 [2023-12-20 03:19:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:19:59,053 INFO L495 AbstractCegarLoop]: Abstraction has 53217 states and 66717 transitions. [2023-12-20 03:19:59,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 03:19:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 53217 states and 66717 transitions. [2023-12-20 03:19:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 03:19:59,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:19:59,054 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] [2023-12-20 03:19:59,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 03:19:59,054 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:19:59,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:19:59,055 INFO L85 PathProgramCache]: Analyzing trace with hash -41619293, now seen corresponding path program 1 times [2023-12-20 03:19:59,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:19:59,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803724685] [2023-12-20 03:19:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:19:59,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:19:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:19:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 03:19:59,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:19:59,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803724685] [2023-12-20 03:19:59,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803724685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:19:59,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:19:59,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:19:59,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026402200] [2023-12-20 03:19:59,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:19:59,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:19:59,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:19:59,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:19:59,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:19:59,087 INFO L87 Difference]: Start difference. First operand 53217 states and 66717 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:19:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:19:59,510 INFO L93 Difference]: Finished difference Result 93799 states and 117898 transitions. [2023-12-20 03:19:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:19:59,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-20 03:19:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:19:59,562 INFO L225 Difference]: With dead ends: 93799 [2023-12-20 03:19:59,563 INFO L226 Difference]: Without dead ends: 41030 [2023-12-20 03:19:59,597 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 03:19:59,597 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 63 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:19:59,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 119 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:19:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41030 states. [2023-12-20 03:19:59,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41030 to 41030. [2023-12-20 03:19:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41030 states, 41029 states have (on average 1.2432182115089327) internal successors, (51008), 41029 states have internal predecessors, (51008), 0 states have call successors, (0), 0 states 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 03:20:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41030 states to 41030 states and 51008 transitions. [2023-12-20 03:20:00,175 INFO L78 Accepts]: Start accepts. Automaton has 41030 states and 51008 transitions. Word has length 83 [2023-12-20 03:20:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:20:00,175 INFO L495 AbstractCegarLoop]: Abstraction has 41030 states and 51008 transitions. [2023-12-20 03:20:00,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:20:00,175 INFO L276 IsEmpty]: Start isEmpty. Operand 41030 states and 51008 transitions. [2023-12-20 03:20:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 03:20:00,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:20:00,176 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] [2023-12-20 03:20:00,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 03:20:00,176 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:20:00,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:20:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1411601835, now seen corresponding path program 1 times [2023-12-20 03:20:00,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:20:00,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334560435] [2023-12-20 03:20:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:20:00,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:20:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:20:00,202 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 03:20:00,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:20:00,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334560435] [2023-12-20 03:20:00,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334560435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:20:00,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:20:00,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:20:00,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637890892] [2023-12-20 03:20:00,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:20:00,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:20:00,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:20:00,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:20:00,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:20:00,204 INFO L87 Difference]: Start difference. First operand 41030 states and 51008 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:20:00,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:20:00,371 INFO L93 Difference]: Finished difference Result 81240 states and 101048 transitions. [2023-12-20 03:20:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:20:00,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-20 03:20:00,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:20:00,410 INFO L225 Difference]: With dead ends: 81240 [2023-12-20 03:20:00,410 INFO L226 Difference]: Without dead ends: 40275 [2023-12-20 03:20:00,432 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 03:20:00,432 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 59 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:20:00,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 117 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:20:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40275 states. [2023-12-20 03:20:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40275 to 40275. [2023-12-20 03:20:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40275 states, 40274 states have (on average 1.2286338580722054) internal successors, (49482), 40274 states have internal predecessors, (49482), 0 states have call successors, (0), 0 states 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 03:20:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40275 states to 40275 states and 49482 transitions. [2023-12-20 03:20:00,921 INFO L78 Accepts]: Start accepts. Automaton has 40275 states and 49482 transitions. Word has length 83 [2023-12-20 03:20:00,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:20:00,921 INFO L495 AbstractCegarLoop]: Abstraction has 40275 states and 49482 transitions. [2023-12-20 03:20:00,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:20:00,922 INFO L276 IsEmpty]: Start isEmpty. Operand 40275 states and 49482 transitions. [2023-12-20 03:20:00,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 03:20:00,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:20:00,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:20:00,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 03:20:00,923 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:20:00,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:20:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash -714754084, now seen corresponding path program 1 times [2023-12-20 03:20:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:20:00,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513496372] [2023-12-20 03:20:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:20:00,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:20:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:20:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:01,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:20:01,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513496372] [2023-12-20 03:20:01,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513496372] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:20:01,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037123521] [2023-12-20 03:20:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:20:01,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:20:01,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:20:01,024 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 03:20:01,027 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 03:20:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:20:01,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 03:20:01,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:20:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:01,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:20:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:01,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037123521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:20:01,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:20:01,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 03:20:01,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094966167] [2023-12-20 03:20:01,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:20:01,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 03:20:01,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:20:01,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 03:20:01,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:20:01,497 INFO L87 Difference]: Start difference. First operand 40275 states and 49482 transitions. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 10 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 03:20:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:20:01,753 INFO L93 Difference]: Finished difference Result 71531 states and 88302 transitions. [2023-12-20 03:20:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:20:01,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 10 states have internal predecessors, (194), 0 states have call successors, (0), 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 109 [2023-12-20 03:20:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:20:01,796 INFO L225 Difference]: With dead ends: 71531 [2023-12-20 03:20:01,796 INFO L226 Difference]: Without dead ends: 45349 [2023-12-20 03:20:01,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 208 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-20 03:20:01,816 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 466 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:20:01,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 251 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:20:01,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45349 states. [2023-12-20 03:20:02,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45349 to 37855. [2023-12-20 03:20:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37855 states, 37854 states have (on average 1.2153537274792625) internal successors, (46006), 37854 states have internal predecessors, (46006), 0 states have call successors, (0), 0 states 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 03:20:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37855 states to 37855 states and 46006 transitions. [2023-12-20 03:20:02,323 INFO L78 Accepts]: Start accepts. Automaton has 37855 states and 46006 transitions. Word has length 109 [2023-12-20 03:20:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:20:02,323 INFO L495 AbstractCegarLoop]: Abstraction has 37855 states and 46006 transitions. [2023-12-20 03:20:02,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 10 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 03:20:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand 37855 states and 46006 transitions. [2023-12-20 03:20:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 03:20:02,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:20:02,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:20:02,331 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 03:20:02,527 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,SelfDestructingSolverStorable27 [2023-12-20 03:20:02,527 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:20:02,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:20:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash -554094373, now seen corresponding path program 1 times [2023-12-20 03:20:02,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:20:02,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205475930] [2023-12-20 03:20:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:20:02,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:20:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:20:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:03,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:20:03,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205475930] [2023-12-20 03:20:03,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205475930] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:20:03,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316880125] [2023-12-20 03:20:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:20:03,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:20:03,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:20:03,241 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 03:20:03,243 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 03:20:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:20:03,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 03:20:03,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:20:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 32 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:04,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:20:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316880125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:20:05,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:20:05,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 30 [2023-12-20 03:20:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302950293] [2023-12-20 03:20:05,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:20:05,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 03:20:05,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:20:05,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 03:20:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2023-12-20 03:20:05,411 INFO L87 Difference]: Start difference. First operand 37855 states and 46006 transitions. Second operand has 31 states, 31 states have (on average 10.935483870967742) internal successors, (339), 30 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 03:20:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:20:09,574 INFO L93 Difference]: Finished difference Result 202656 states and 246304 transitions. [2023-12-20 03:20:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-20 03:20:09,574 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.935483870967742) internal successors, (339), 30 states have internal predecessors, (339), 0 states have call successors, (0), 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 135 [2023-12-20 03:20:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:20:09,740 INFO L225 Difference]: With dead ends: 202656 [2023-12-20 03:20:09,740 INFO L226 Difference]: Without dead ends: 165066 [2023-12-20 03:20:09,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2118, Invalid=6254, Unknown=0, NotChecked=0, Total=8372 [2023-12-20 03:20:09,764 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 3128 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3128 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:20:09,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3128 Valid, 1825 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 03:20:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165066 states. [2023-12-20 03:20:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165066 to 73327. [2023-12-20 03:20:10,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73327 states, 73326 states have (on average 1.2129531134931675) internal successors, (88941), 73326 states have internal predecessors, (88941), 0 states have call successors, (0), 0 states 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 03:20:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73327 states to 73327 states and 88941 transitions. [2023-12-20 03:20:10,953 INFO L78 Accepts]: Start accepts. Automaton has 73327 states and 88941 transitions. Word has length 135 [2023-12-20 03:20:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:20:10,953 INFO L495 AbstractCegarLoop]: Abstraction has 73327 states and 88941 transitions. [2023-12-20 03:20:10,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.935483870967742) internal successors, (339), 30 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 03:20:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 73327 states and 88941 transitions. [2023-12-20 03:20:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 03:20:10,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:20:10,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:20:10,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 03:20:11,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:20:11,159 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:20:11,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:20:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1050175073, now seen corresponding path program 1 times [2023-12-20 03:20:11,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:20:11,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889112463] [2023-12-20 03:20:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:20:11,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:20:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:20:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:11,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:20:11,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889112463] [2023-12-20 03:20:11,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889112463] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:20:11,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370955719] [2023-12-20 03:20:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:20:11,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:20:11,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:20:11,659 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 03:20:11,660 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 03:20:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:20:11,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 03:20:11,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:20:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:13,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:20:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:20:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370955719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:20:15,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:20:15,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 46 [2023-12-20 03:20:15,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005608178] [2023-12-20 03:20:15,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:20:15,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-20 03:20:15,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:20:15,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-20 03:20:15,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 03:20:15,293 INFO L87 Difference]: Start difference. First operand 73327 states and 88941 transitions. Second operand has 47 states, 47 states have (on average 8.106382978723405) internal successors, (381), 46 states have internal predecessors, (381), 0 states have call successors, (0), 0 states 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 03:23:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:23:29,080 INFO L93 Difference]: Finished difference Result 436330 states and 525280 transitions. [2023-12-20 03:23:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1381 states. [2023-12-20 03:23:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.106382978723405) internal successors, (381), 46 states have internal predecessors, (381), 0 states have call successors, (0), 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 135 [2023-12-20 03:23:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:23:29,559 INFO L225 Difference]: With dead ends: 436330 [2023-12-20 03:23:29,559 INFO L226 Difference]: Without dead ends: 384323 [2023-12-20 03:23:29,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1661 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979141 ImplicationChecksByTransitivity, 181.8s TimeCoverageRelationStatistics Valid=106653, Invalid=1925397, Unknown=0, NotChecked=0, Total=2032050 [2023-12-20 03:23:29,721 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 56175 mSDsluCounter, 9544 mSDsCounter, 0 mSdLazyCounter, 12529 mSolverCounterSat, 1300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56175 SdHoareTripleChecker+Valid, 10100 SdHoareTripleChecker+Invalid, 13829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 12529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:23:29,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56175 Valid, 10100 Invalid, 13829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1300 Valid, 12529 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-20 03:23:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384323 states. [2023-12-20 03:23:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384323 to 103964. [2023-12-20 03:23:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103964 states, 103963 states have (on average 1.2059482700576167) internal successors, (125374), 103963 states have internal predecessors, (125374), 0 states have call successors, (0), 0 states 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 03:23:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103964 states to 103964 states and 125374 transitions. [2023-12-20 03:23:32,286 INFO L78 Accepts]: Start accepts. Automaton has 103964 states and 125374 transitions. Word has length 135 [2023-12-20 03:23:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:23:32,287 INFO L495 AbstractCegarLoop]: Abstraction has 103964 states and 125374 transitions. [2023-12-20 03:23:32,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.106382978723405) internal successors, (381), 46 states have internal predecessors, (381), 0 states have call successors, (0), 0 states 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 03:23:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 103964 states and 125374 transitions. [2023-12-20 03:23:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 03:23:32,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:23:32,292 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:23:32,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 03:23:32,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:23:32,500 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:23:32,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:23:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1781662671, now seen corresponding path program 1 times [2023-12-20 03:23:32,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:23:32,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592416481] [2023-12-20 03:23:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:23:32,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:23:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:23:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-20 03:23:32,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:23:32,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592416481] [2023-12-20 03:23:32,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592416481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:23:32,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:23:32,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:23:32,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026464324] [2023-12-20 03:23:32,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:23:32,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:23:32,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:23:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:23:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:23:32,576 INFO L87 Difference]: Start difference. First operand 103964 states and 125374 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:23:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:23:33,202 INFO L93 Difference]: Finished difference Result 145192 states and 175184 transitions. [2023-12-20 03:23:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:23:33,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 135 [2023-12-20 03:23:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:23:33,248 INFO L225 Difference]: With dead ends: 145192 [2023-12-20 03:23:33,248 INFO L226 Difference]: Without dead ends: 48843 [2023-12-20 03:23:33,278 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 03:23:33,278 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 19 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 170 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 03:23:33,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 170 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:23:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48843 states. [2023-12-20 03:23:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48843 to 48841. [2023-12-20 03:23:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48841 states, 48840 states have (on average 1.1855651105651106) internal successors, (57903), 48840 states have internal predecessors, (57903), 0 states have call successors, (0), 0 states 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 03:23:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48841 states to 48841 states and 57903 transitions. [2023-12-20 03:23:33,912 INFO L78 Accepts]: Start accepts. Automaton has 48841 states and 57903 transitions. Word has length 135 [2023-12-20 03:23:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:23:33,912 INFO L495 AbstractCegarLoop]: Abstraction has 48841 states and 57903 transitions. [2023-12-20 03:23:33,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:23:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 48841 states and 57903 transitions. [2023-12-20 03:23:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 03:23:33,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:23:33,916 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:23:33,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 03:23:33,916 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:23:33,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:23:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -768445048, now seen corresponding path program 1 times [2023-12-20 03:23:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:23:33,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636784552] [2023-12-20 03:23:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:23:33,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:23:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:23:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 31 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:23:34,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:23:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636784552] [2023-12-20 03:23:34,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636784552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:23:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604412434] [2023-12-20 03:23:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:23:34,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:23:34,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:23:34,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:23:34,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 03:23:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:23:34,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 03:23:34,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:23:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:23:35,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:23:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 31 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:23:37,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604412434] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:23:37,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:23:37,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2023-12-20 03:23:37,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316716822] [2023-12-20 03:23:37,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:23:37,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 03:23:37,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:23:37,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 03:23:37,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2023-12-20 03:23:37,407 INFO L87 Difference]: Start difference. First operand 48841 states and 57903 transitions. Second operand has 32 states, 32 states have (on average 10.71875) internal successors, (343), 31 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 03:23:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:23:46,209 INFO L93 Difference]: Finished difference Result 168835 states and 202583 transitions. [2023-12-20 03:23:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-12-20 03:23:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.71875) internal successors, (343), 31 states have internal predecessors, (343), 0 states have call successors, (0), 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 137 [2023-12-20 03:23:46,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:23:46,337 INFO L225 Difference]: With dead ends: 168835 [2023-12-20 03:23:46,337 INFO L226 Difference]: Without dead ends: 121632 [2023-12-20 03:23:46,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7921 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=4346, Invalid=18910, Unknown=0, NotChecked=0, Total=23256 [2023-12-20 03:23:46,382 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 3489 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3489 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:23:46,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3489 Valid, 3656 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 03:23:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121632 states. [2023-12-20 03:23:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121632 to 36474. [2023-12-20 03:23:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36474 states, 36473 states have (on average 1.1864667013955528) internal successors, (43274), 36473 states have internal predecessors, (43274), 0 states have call successors, (0), 0 states 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 03:23:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36474 states to 36474 states and 43274 transitions. [2023-12-20 03:23:47,107 INFO L78 Accepts]: Start accepts. Automaton has 36474 states and 43274 transitions. Word has length 137 [2023-12-20 03:23:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:23:47,107 INFO L495 AbstractCegarLoop]: Abstraction has 36474 states and 43274 transitions. [2023-12-20 03:23:47,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.71875) internal successors, (343), 31 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 03:23:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36474 states and 43274 transitions. [2023-12-20 03:23:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 03:23:47,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:23:47,109 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:23:47,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 03:23:47,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:23:47,311 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:23:47,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:23:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash 777949411, now seen corresponding path program 1 times [2023-12-20 03:23:47,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:23:47,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201855420] [2023-12-20 03:23:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:23:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:23:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:23:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:23:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:23:48,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201855420] [2023-12-20 03:23:48,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201855420] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:23:48,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450456996] [2023-12-20 03:23:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:23:48,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:23:48,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:23:48,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:23:48,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 03:23:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:23:48,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 03:23:48,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:23:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:23:49,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:23:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:23:52,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450456996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:23:52,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:23:52,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 24] total 62 [2023-12-20 03:23:52,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051164065] [2023-12-20 03:23:52,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:23:52,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 03:23:52,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:23:52,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 03:23:52,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=3404, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 03:23:52,561 INFO L87 Difference]: Start difference. First operand 36474 states and 43274 transitions. Second operand has 62 states, 62 states have (on average 5.903225806451613) internal successors, (366), 62 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 03:24:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:24:02,407 INFO L93 Difference]: Finished difference Result 159285 states and 187283 transitions. [2023-12-20 03:24:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-20 03:24:02,407 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.903225806451613) internal successors, (366), 62 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) Word has length 137 [2023-12-20 03:24:02,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:24:02,549 INFO L225 Difference]: With dead ends: 159285 [2023-12-20 03:24:02,549 INFO L226 Difference]: Without dead ends: 136562 [2023-12-20 03:24:02,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11680 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4132, Invalid=32158, Unknown=0, NotChecked=0, Total=36290 [2023-12-20 03:24:02,589 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 3454 mSDsluCounter, 8835 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3454 SdHoareTripleChecker+Valid, 9136 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:24:02,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3454 Valid, 9136 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 03:24:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136562 states. [2023-12-20 03:24:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136562 to 72078. [2023-12-20 03:24:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72078 states, 72077 states have (on average 1.1837618102862217) internal successors, (85322), 72077 states have internal predecessors, (85322), 0 states have call successors, (0), 0 states 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 03:24:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72078 states to 72078 states and 85322 transitions. [2023-12-20 03:24:03,569 INFO L78 Accepts]: Start accepts. Automaton has 72078 states and 85322 transitions. Word has length 137 [2023-12-20 03:24:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:24:03,569 INFO L495 AbstractCegarLoop]: Abstraction has 72078 states and 85322 transitions. [2023-12-20 03:24:03,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.903225806451613) internal successors, (366), 62 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 03:24:03,569 INFO L276 IsEmpty]: Start isEmpty. Operand 72078 states and 85322 transitions. [2023-12-20 03:24:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 03:24:03,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:24:03,573 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:24:03,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 03:24:03,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 03:24:03,773 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:24:03,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:24:03,774 INFO L85 PathProgramCache]: Analyzing trace with hash 91679014, now seen corresponding path program 1 times [2023-12-20 03:24:03,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:24:03,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527795887] [2023-12-20 03:24:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:24:03,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:24:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:24:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 13 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:24:04,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:24:04,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527795887] [2023-12-20 03:24:04,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527795887] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:24:04,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173157617] [2023-12-20 03:24:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:24:04,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:24:04,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:24:04,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:24:04,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 03:24:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:24:04,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-20 03:24:04,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:24:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 22 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:24:06,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:24:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 22 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:24:08,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173157617] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:24:08,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:24:08,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 50 [2023-12-20 03:24:08,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227215476] [2023-12-20 03:24:08,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:24:08,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-20 03:24:08,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:24:08,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-20 03:24:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2280, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 03:24:08,131 INFO L87 Difference]: Start difference. First operand 72078 states and 85322 transitions. Second operand has 50 states, 50 states have (on average 7.62) internal successors, (381), 50 states have internal predecessors, (381), 0 states have call successors, (0), 0 states 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 03:24:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:24:30,415 INFO L93 Difference]: Finished difference Result 211909 states and 248914 transitions. [2023-12-20 03:24:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-20 03:24:30,416 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.62) internal successors, (381), 50 states have internal predecessors, (381), 0 states have call successors, (0), 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 137 [2023-12-20 03:24:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:24:30,579 INFO L225 Difference]: With dead ends: 211909 [2023-12-20 03:24:30,579 INFO L226 Difference]: Without dead ends: 170903 [2023-12-20 03:24:30,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27753 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=6153, Invalid=71409, Unknown=0, NotChecked=0, Total=77562 [2023-12-20 03:24:30,598 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 7397 mSDsluCounter, 24096 mSDsCounter, 0 mSdLazyCounter, 8061 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7397 SdHoareTripleChecker+Valid, 24927 SdHoareTripleChecker+Invalid, 8095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 8061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 03:24:30,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7397 Valid, 24927 Invalid, 8095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 8061 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 03:24:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170903 states. [2023-12-20 03:24:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170903 to 100513. [2023-12-20 03:24:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100513 states, 100512 states have (on average 1.17896370582617) internal successors, (118500), 100512 states have internal predecessors, (118500), 0 states have call successors, (0), 0 states 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 03:24:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100513 states to 100513 states and 118500 transitions. [2023-12-20 03:24:31,922 INFO L78 Accepts]: Start accepts. Automaton has 100513 states and 118500 transitions. Word has length 137 [2023-12-20 03:24:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:24:31,922 INFO L495 AbstractCegarLoop]: Abstraction has 100513 states and 118500 transitions. [2023-12-20 03:24:31,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.62) internal successors, (381), 50 states have internal predecessors, (381), 0 states have call successors, (0), 0 states 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 03:24:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 100513 states and 118500 transitions. [2023-12-20 03:24:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 03:24:31,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:24:31,926 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:24:31,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 03:24:32,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 03:24:32,127 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:24:32,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:24:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash 442576821, now seen corresponding path program 1 times [2023-12-20 03:24:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:24:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85698619] [2023-12-20 03:24:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:24:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:24:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:24:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 40 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:24:33,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:24:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85698619] [2023-12-20 03:24:33,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85698619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:24:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109094146] [2023-12-20 03:24:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:24:33,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:24:33,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:24:33,597 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:24:33,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 03:24:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:24:33,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 03:24:33,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:24:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 31 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:24:35,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:24:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 31 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:24:36,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109094146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:24:36,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:24:36,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 16] total 57 [2023-12-20 03:24:36,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79607097] [2023-12-20 03:24:36,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:24:36,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 03:24:36,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:24:36,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 03:24:36,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3022, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 03:24:36,695 INFO L87 Difference]: Start difference. First operand 100513 states and 118500 transitions. Second operand has 57 states, 57 states have (on average 6.701754385964913) internal successors, (382), 57 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 03:24:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:24:57,626 INFO L93 Difference]: Finished difference Result 207372 states and 247685 transitions. [2023-12-20 03:24:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-20 03:24:57,627 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 6.701754385964913) internal successors, (382), 57 states have internal predecessors, (382), 0 states have call successors, (0), 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 138 [2023-12-20 03:24:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:24:57,793 INFO L225 Difference]: With dead ends: 207372 [2023-12-20 03:24:57,793 INFO L226 Difference]: Without dead ends: 157347 [2023-12-20 03:24:57,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9217 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=3166, Invalid=29776, Unknown=0, NotChecked=0, Total=32942 [2023-12-20 03:24:57,848 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 3495 mSDsluCounter, 15966 mSDsCounter, 0 mSdLazyCounter, 5897 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3495 SdHoareTripleChecker+Valid, 16464 SdHoareTripleChecker+Invalid, 5912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 5897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:24:57,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3495 Valid, 16464 Invalid, 5912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 5897 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-20 03:24:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157347 states. [2023-12-20 03:24:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157347 to 95138. [2023-12-20 03:24:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95138 states, 95137 states have (on average 1.1753681532947224) internal successors, (111821), 95137 states have internal predecessors, (111821), 0 states have call successors, (0), 0 states 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 03:24:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95138 states to 95138 states and 111821 transitions. [2023-12-20 03:24:59,296 INFO L78 Accepts]: Start accepts. Automaton has 95138 states and 111821 transitions. Word has length 138 [2023-12-20 03:24:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:24:59,297 INFO L495 AbstractCegarLoop]: Abstraction has 95138 states and 111821 transitions. [2023-12-20 03:24:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 6.701754385964913) internal successors, (382), 57 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 03:24:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 95138 states and 111821 transitions. [2023-12-20 03:24:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 03:24:59,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:24:59,299 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:24:59,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 03:24:59,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 03:24:59,500 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:24:59,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:24:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1751023645, now seen corresponding path program 1 times [2023-12-20 03:24:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:24:59,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147524580] [2023-12-20 03:24:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:24:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:24:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:25:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:25:01,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:25:01,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147524580] [2023-12-20 03:25:01,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147524580] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:25:01,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168726420] [2023-12-20 03:25:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:25:01,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:25:01,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:25:01,198 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:25:01,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 03:25:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:25:01,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-20 03:25:01,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:25:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 41 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:25:09,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:25:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:25:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168726420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:25:16,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:25:16,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 37, 36] total 91 [2023-12-20 03:25:16,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172859636] [2023-12-20 03:25:16,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:25:16,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-12-20 03:25:16,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:25:16,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-12-20 03:25:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=7424, Unknown=0, NotChecked=0, Total=8190 [2023-12-20 03:25:16,420 INFO L87 Difference]: Start difference. First operand 95138 states and 111821 transitions. Second operand has 91 states, 91 states have (on average 4.274725274725275) internal successors, (389), 91 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)