/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/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:27:27,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:27:27,360 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 01:27:27,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:27:27,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:27:27,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:27:27,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:27:27,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:27:27,386 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:27:27,389 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:27:27,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:27:27,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:27:27,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:27:27,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:27:27,390 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:27:27,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:27:27,391 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:27:27,391 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:27:27,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:27:27,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:27:27,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:27:27,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:27:27,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:27:27,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:27:27,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:27:27,393 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:27:27,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:27:27,394 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:27:27,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:27:27,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:27:27,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:27:27,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:27:27,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:27:27,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:27:27,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:27:27,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:27:27,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:27:27,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:27:27,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:27:27,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:27:27,396 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:27:27,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:27:27,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:27:27,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:27:27,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:27:27,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:27:27,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:27:27,622 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:27:27,623 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:27:27,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2023-12-20 01:27:28,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:27:28,829 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:27:28,830 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2023-12-20 01:27:28,840 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed2f5e3c/86420b6f43c148d1a45f8d5bba9aed60/FLAG2af8684f4 [2023-12-20 01:27:28,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed2f5e3c/86420b6f43c148d1a45f8d5bba9aed60 [2023-12-20 01:27:28,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:27:28,854 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:27:28,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:27:28,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:27:28,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:27:28,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:27:28" (1/1) ... [2023-12-20 01:27:28,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb9b018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:28, skipping insertion in model container [2023-12-20 01:27:28,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:27:28" (1/1) ... [2023-12-20 01:27:28,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:27:29,089 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/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2023-12-20 01:27:29,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:27:29,099 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:27:29,151 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/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2023-12-20 01:27:29,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:27:29,163 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:27:29,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29 WrapperNode [2023-12-20 01:27:29,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:27:29,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:27:29,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:27:29,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:27:29,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,229 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 484 [2023-12-20 01:27:29,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:27:29,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:27:29,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:27:29,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:27:29,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,253 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 01:27:29,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:27:29,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:27:29,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:27:29,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:27:29,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (1/1) ... [2023-12-20 01:27:29,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:27:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:27:29,341 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 01:27:29,362 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 01:27:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:27:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:27:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:27:29,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:27:29,464 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:27:29,466 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:27:29,929 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:27:29,958 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:27:29,958 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:27:29,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:27:29 BoogieIcfgContainer [2023-12-20 01:27:29,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:27:29,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:27:29,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:27:29,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:27:29,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:27:28" (1/3) ... [2023-12-20 01:27:29,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7135cece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:27:29, skipping insertion in model container [2023-12-20 01:27:29,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:27:29" (2/3) ... [2023-12-20 01:27:29,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7135cece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:27:29, skipping insertion in model container [2023-12-20 01:27:29,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:27:29" (3/3) ... [2023-12-20 01:27:29,966 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2023-12-20 01:27:29,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:27:29,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:27:30,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:27:30,026 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;@3dc3d632, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:27:30,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:27:30,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 130 states have (on average 1.8) internal successors, (234), 131 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 01:27:30,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:30,038 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] [2023-12-20 01:27:30,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:30,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash 224379031, now seen corresponding path program 1 times [2023-12-20 01:27:30,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:30,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22051730] [2023-12-20 01:27:30,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:30,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:30,236 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 01:27:30,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:30,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22051730] [2023-12-20 01:27:30,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22051730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:30,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:30,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:27:30,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937470213] [2023-12-20 01:27:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:30,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:27:30,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:30,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:27:30,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:27:30,267 INFO L87 Difference]: Start difference. First operand has 132 states, 130 states have (on average 1.8) internal successors, (234), 131 states have internal predecessors, (234), 0 states have call successors, (0), 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 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:30,298 INFO L93 Difference]: Finished difference Result 205 states and 361 transitions. [2023-12-20 01:27:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:27:30,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 01:27:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:30,309 INFO L225 Difference]: With dead ends: 205 [2023-12-20 01:27:30,309 INFO L226 Difference]: Without dead ends: 130 [2023-12-20 01:27:30,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:27:30,314 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:30,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-20 01:27:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-12-20 01:27:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.7751937984496124) internal successors, (229), 129 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 229 transitions. [2023-12-20 01:27:30,348 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 229 transitions. Word has length 34 [2023-12-20 01:27:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:30,349 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 229 transitions. [2023-12-20 01:27:30,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 229 transitions. [2023-12-20 01:27:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 01:27:30,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:30,350 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] [2023-12-20 01:27:30,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:27:30,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:30,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1464564711, now seen corresponding path program 1 times [2023-12-20 01:27:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:30,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931150633] [2023-12-20 01:27:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:30,532 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 01:27:30,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:30,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931150633] [2023-12-20 01:27:30,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931150633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:30,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:30,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:27:30,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912668512] [2023-12-20 01:27:30,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:30,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:27:30,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:30,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:27:30,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:27:30,536 INFO L87 Difference]: Start difference. First operand 130 states and 229 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:30,591 INFO L93 Difference]: Finished difference Result 205 states and 355 transitions. [2023-12-20 01:27:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:27:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 01:27:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:30,593 INFO L225 Difference]: With dead ends: 205 [2023-12-20 01:27:30,593 INFO L226 Difference]: Without dead ends: 130 [2023-12-20 01:27:30,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:27:30,594 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 0 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:30,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 645 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-20 01:27:30,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-12-20 01:27:30,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.5426356589147288) internal successors, (199), 129 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 199 transitions. [2023-12-20 01:27:30,602 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 199 transitions. Word has length 34 [2023-12-20 01:27:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:30,602 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 199 transitions. [2023-12-20 01:27:30,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 199 transitions. [2023-12-20 01:27:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:27:30,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:30,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:30,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:27:30,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1940708535, now seen corresponding path program 1 times [2023-12-20 01:27:30,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3379146] [2023-12-20 01:27:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:30,701 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 01:27:30,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:30,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3379146] [2023-12-20 01:27:30,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3379146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:30,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:30,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011164099] [2023-12-20 01:27:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:30,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:30,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:30,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:30,704 INFO L87 Difference]: Start difference. First operand 130 states and 199 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:30,743 INFO L93 Difference]: Finished difference Result 264 states and 427 transitions. [2023-12-20 01:27:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:30,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 01:27:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:30,746 INFO L225 Difference]: With dead ends: 264 [2023-12-20 01:27:30,746 INFO L226 Difference]: Without dead ends: 192 [2023-12-20 01:27:30,746 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 01:27:30,747 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 96 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:30,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 344 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-20 01:27:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2023-12-20 01:27:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.574468085106383) internal successors, (296), 188 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 296 transitions. [2023-12-20 01:27:30,757 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 296 transitions. Word has length 63 [2023-12-20 01:27:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:30,758 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 296 transitions. [2023-12-20 01:27:30,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 296 transitions. [2023-12-20 01:27:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:27:30,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:30,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:30,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:27:30,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:30,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1714080695, now seen corresponding path program 1 times [2023-12-20 01:27:30,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:30,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953449016] [2023-12-20 01:27:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:30,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:30,901 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 01:27:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:30,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953449016] [2023-12-20 01:27:30,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953449016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:30,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:30,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:30,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684404766] [2023-12-20 01:27:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:30,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:30,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:30,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:30,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:30,903 INFO L87 Difference]: Start difference. First operand 189 states and 296 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:30,923 INFO L93 Difference]: Finished difference Result 435 states and 708 transitions. [2023-12-20 01:27:30,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:30,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 01:27:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:30,926 INFO L225 Difference]: With dead ends: 435 [2023-12-20 01:27:30,926 INFO L226 Difference]: Without dead ends: 304 [2023-12-20 01:27:30,930 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 01:27:30,934 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 98 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:30,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 357 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-20 01:27:30,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 300. [2023-12-20 01:27:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.608695652173913) internal successors, (481), 299 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 481 transitions. [2023-12-20 01:27:30,947 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 481 transitions. Word has length 65 [2023-12-20 01:27:30,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:30,948 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 481 transitions. [2023-12-20 01:27:30,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:30,948 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 481 transitions. [2023-12-20 01:27:30,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 01:27:30,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:30,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:30,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:27:30,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:30,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:30,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1557818661, now seen corresponding path program 1 times [2023-12-20 01:27:30,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:30,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141139193] [2023-12-20 01:27:30,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:30,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:31,045 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 01:27:31,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:31,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141139193] [2023-12-20 01:27:31,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141139193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:31,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:31,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:31,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682909495] [2023-12-20 01:27:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:31,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:31,051 INFO L87 Difference]: Start difference. First operand 300 states and 481 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:31,071 INFO L93 Difference]: Finished difference Result 752 states and 1235 transitions. [2023-12-20 01:27:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-20 01:27:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:31,074 INFO L225 Difference]: With dead ends: 752 [2023-12-20 01:27:31,074 INFO L226 Difference]: Without dead ends: 510 [2023-12-20 01:27:31,075 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 01:27:31,075 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 92 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:31,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 358 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:31,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-12-20 01:27:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 504. [2023-12-20 01:27:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.6242544731610338) internal successors, (817), 503 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 817 transitions. [2023-12-20 01:27:31,087 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 817 transitions. Word has length 67 [2023-12-20 01:27:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:31,087 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 817 transitions. [2023-12-20 01:27:31,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,088 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 817 transitions. [2023-12-20 01:27:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 01:27:31,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:31,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:27:31,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:31,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1377171565, now seen corresponding path program 1 times [2023-12-20 01:27:31,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:31,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074462234] [2023-12-20 01:27:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:31,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:31,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074462234] [2023-12-20 01:27:31,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074462234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:31,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:31,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:27:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241082490] [2023-12-20 01:27:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:31,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:27:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:27:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:27:31,202 INFO L87 Difference]: Start difference. First operand 504 states and 817 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 01:27:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:31,323 INFO L93 Difference]: Finished difference Result 2152 states and 3595 transitions. [2023-12-20 01:27:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:27:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 69 [2023-12-20 01:27:31,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:31,331 INFO L225 Difference]: With dead ends: 2152 [2023-12-20 01:27:31,331 INFO L226 Difference]: Without dead ends: 1706 [2023-12-20 01:27:31,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:27:31,332 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 803 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:31,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1126 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:27:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2023-12-20 01:27:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 895. [2023-12-20 01:27:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.6409395973154361) internal successors, (1467), 894 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1467 transitions. [2023-12-20 01:27:31,364 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1467 transitions. Word has length 69 [2023-12-20 01:27:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:31,365 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1467 transitions. [2023-12-20 01:27:31,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 01:27:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1467 transitions. [2023-12-20 01:27:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 01:27:31,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:31,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:31,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:27:31,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:31,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash -320075454, now seen corresponding path program 1 times [2023-12-20 01:27:31,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:31,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303755895] [2023-12-20 01:27:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:31,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:31,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:31,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303755895] [2023-12-20 01:27:31,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303755895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:31,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:31,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:27:31,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677427498] [2023-12-20 01:27:31,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:31,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:27:31,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:31,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:27:31,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:27:31,432 INFO L87 Difference]: Start difference. First operand 895 states and 1467 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 01:27:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:31,499 INFO L93 Difference]: Finished difference Result 2608 states and 4348 transitions. [2023-12-20 01:27:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:27:31,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 70 [2023-12-20 01:27:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:31,504 INFO L225 Difference]: With dead ends: 2608 [2023-12-20 01:27:31,504 INFO L226 Difference]: Without dead ends: 1771 [2023-12-20 01:27:31,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:27:31,507 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 355 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:31,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 639 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2023-12-20 01:27:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1324. [2023-12-20 01:27:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 1.6500377928949357) internal successors, (2183), 1323 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2183 transitions. [2023-12-20 01:27:31,532 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2183 transitions. Word has length 70 [2023-12-20 01:27:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:31,532 INFO L495 AbstractCegarLoop]: Abstraction has 1324 states and 2183 transitions. [2023-12-20 01:27:31,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 01:27:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2183 transitions. [2023-12-20 01:27:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 01:27:31,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:31,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:31,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:27:31,533 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:31,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:31,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1389673738, now seen corresponding path program 1 times [2023-12-20 01:27:31,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705494847] [2023-12-20 01:27:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:31,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:31,608 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 01:27:31,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:31,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705494847] [2023-12-20 01:27:31,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705494847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:31,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:31,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:27:31,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858084706] [2023-12-20 01:27:31,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:31,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:27:31,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:27:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:27:31,609 INFO L87 Difference]: Start difference. First operand 1324 states and 2183 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:31,694 INFO L93 Difference]: Finished difference Result 3842 states and 6392 transitions. [2023-12-20 01:27:31,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:27:31,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-20 01:27:31,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:31,700 INFO L225 Difference]: With dead ends: 3842 [2023-12-20 01:27:31,700 INFO L226 Difference]: Without dead ends: 2576 [2023-12-20 01:27:31,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:27:31,702 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 353 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:31,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 640 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:27:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2023-12-20 01:27:31,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 1938. [2023-12-20 01:27:31,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1937 states have (on average 1.6484254001032526) internal successors, (3193), 1937 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 3193 transitions. [2023-12-20 01:27:31,742 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 3193 transitions. Word has length 71 [2023-12-20 01:27:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:31,743 INFO L495 AbstractCegarLoop]: Abstraction has 1938 states and 3193 transitions. [2023-12-20 01:27:31,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 3193 transitions. [2023-12-20 01:27:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 01:27:31,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:31,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:31,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:27:31,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:31,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash -182030421, now seen corresponding path program 1 times [2023-12-20 01:27:31,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:31,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059438379] [2023-12-20 01:27:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:31,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059438379] [2023-12-20 01:27:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059438379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:31,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:31,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:27:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484138121] [2023-12-20 01:27:31,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:31,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:27:31,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:27:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:27:31,802 INFO L87 Difference]: Start difference. First operand 1938 states and 3193 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:31,887 INFO L93 Difference]: Finished difference Result 5598 states and 9288 transitions. [2023-12-20 01:27:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:27:31,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-20 01:27:31,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:31,896 INFO L225 Difference]: With dead ends: 5598 [2023-12-20 01:27:31,897 INFO L226 Difference]: Without dead ends: 3718 [2023-12-20 01:27:31,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:27:31,902 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 351 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:31,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 647 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:31,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2023-12-20 01:27:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 2812. [2023-12-20 01:27:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 1.6453219494841693) internal successors, (4625), 2811 states have internal predecessors, (4625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4625 transitions. [2023-12-20 01:27:31,957 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4625 transitions. Word has length 72 [2023-12-20 01:27:31,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:31,957 INFO L495 AbstractCegarLoop]: Abstraction has 2812 states and 4625 transitions. [2023-12-20 01:27:31,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:31,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4625 transitions. [2023-12-20 01:27:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:27:31,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:31,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:31,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:27:31,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:31,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash 756120180, now seen corresponding path program 1 times [2023-12-20 01:27:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:31,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251967092] [2023-12-20 01:27:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:31,994 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 01:27:31,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:31,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251967092] [2023-12-20 01:27:31,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251967092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:31,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:31,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:31,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024264074] [2023-12-20 01:27:31,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:31,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:31,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:31,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:31,995 INFO L87 Difference]: Start difference. First operand 2812 states and 4625 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:32,072 INFO L93 Difference]: Finished difference Result 6438 states and 10592 transitions. [2023-12-20 01:27:32,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:32,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 01:27:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:32,082 INFO L225 Difference]: With dead ends: 6438 [2023-12-20 01:27:32,083 INFO L226 Difference]: Without dead ends: 4432 [2023-12-20 01:27:32,085 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 01:27:32,085 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 91 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 403 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 01:27:32,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 403 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2023-12-20 01:27:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 4430. [2023-12-20 01:27:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4429 states have (on average 1.6297132535561074) internal successors, (7218), 4429 states have internal predecessors, (7218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 7218 transitions. [2023-12-20 01:27:32,177 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 7218 transitions. Word has length 73 [2023-12-20 01:27:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:32,178 INFO L495 AbstractCegarLoop]: Abstraction has 4430 states and 7218 transitions. [2023-12-20 01:27:32,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 7218 transitions. [2023-12-20 01:27:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:27:32,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:32,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:32,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:27:32,179 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:32,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:32,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2081997516, now seen corresponding path program 1 times [2023-12-20 01:27:32,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:32,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373573879] [2023-12-20 01:27:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:32,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:32,213 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 01:27:32,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:32,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373573879] [2023-12-20 01:27:32,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373573879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:32,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:32,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:32,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637405475] [2023-12-20 01:27:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:32,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:32,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:32,215 INFO L87 Difference]: Start difference. First operand 4430 states and 7218 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:32,285 INFO L93 Difference]: Finished difference Result 9738 states and 15916 transitions. [2023-12-20 01:27:32,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:32,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 01:27:32,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:32,302 INFO L225 Difference]: With dead ends: 9738 [2023-12-20 01:27:32,302 INFO L226 Difference]: Without dead ends: 6598 [2023-12-20 01:27:32,307 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 01:27:32,307 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 97 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 431 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 01:27:32,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 431 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6598 states. [2023-12-20 01:27:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 6596. [2023-12-20 01:27:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6596 states, 6595 states have (on average 1.6203184230477634) internal successors, (10686), 6595 states have internal predecessors, (10686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6596 states to 6596 states and 10686 transitions. [2023-12-20 01:27:32,430 INFO L78 Accepts]: Start accepts. Automaton has 6596 states and 10686 transitions. Word has length 73 [2023-12-20 01:27:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:32,430 INFO L495 AbstractCegarLoop]: Abstraction has 6596 states and 10686 transitions. [2023-12-20 01:27:32,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6596 states and 10686 transitions. [2023-12-20 01:27:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:27:32,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:32,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:32,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:27:32,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:32,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:32,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1743041398, now seen corresponding path program 1 times [2023-12-20 01:27:32,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:32,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601859215] [2023-12-20 01:27:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:32,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:32,462 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 01:27:32,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:32,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601859215] [2023-12-20 01:27:32,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601859215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:32,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004242070] [2023-12-20 01:27:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:32,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:32,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:32,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:32,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:32,500 INFO L87 Difference]: Start difference. First operand 6596 states and 10686 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:32,595 INFO L93 Difference]: Finished difference Result 14795 states and 24192 transitions. [2023-12-20 01:27:32,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:32,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 01:27:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:32,624 INFO L225 Difference]: With dead ends: 14795 [2023-12-20 01:27:32,624 INFO L226 Difference]: Without dead ends: 9946 [2023-12-20 01:27:32,630 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 01:27:32,631 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 103 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 451 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 01:27:32,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 451 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9946 states. [2023-12-20 01:27:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9946 to 9944. [2023-12-20 01:27:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9944 states, 9943 states have (on average 1.6145026651915921) internal successors, (16053), 9943 states have internal predecessors, (16053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9944 states to 9944 states and 16053 transitions. [2023-12-20 01:27:32,815 INFO L78 Accepts]: Start accepts. Automaton has 9944 states and 16053 transitions. Word has length 73 [2023-12-20 01:27:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:32,815 INFO L495 AbstractCegarLoop]: Abstraction has 9944 states and 16053 transitions. [2023-12-20 01:27:32,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:32,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9944 states and 16053 transitions. [2023-12-20 01:27:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:27:32,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:32,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:32,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:27:32,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:32,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash -313891277, now seen corresponding path program 1 times [2023-12-20 01:27:32,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:32,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398187565] [2023-12-20 01:27:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:32,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:32,981 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 01:27:32,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:32,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398187565] [2023-12-20 01:27:32,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398187565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:32,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:32,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:27:32,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458747881] [2023-12-20 01:27:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:32,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:27:32,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:32,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:27:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:27:32,983 INFO L87 Difference]: Start difference. First operand 9944 states and 16053 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:33,134 INFO L93 Difference]: Finished difference Result 19814 states and 32005 transitions. [2023-12-20 01:27:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:27:33,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 01:27:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:33,151 INFO L225 Difference]: With dead ends: 19814 [2023-12-20 01:27:33,151 INFO L226 Difference]: Without dead ends: 9946 [2023-12-20 01:27:33,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:27:33,162 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 187 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:33,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 528 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9946 states. [2023-12-20 01:27:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9946 to 9944. [2023-12-20 01:27:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9944 states, 9943 states have (on average 1.601931006738409) internal successors, (15928), 9943 states have internal predecessors, (15928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9944 states to 9944 states and 15928 transitions. [2023-12-20 01:27:33,413 INFO L78 Accepts]: Start accepts. Automaton has 9944 states and 15928 transitions. Word has length 74 [2023-12-20 01:27:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:33,414 INFO L495 AbstractCegarLoop]: Abstraction has 9944 states and 15928 transitions. [2023-12-20 01:27:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 9944 states and 15928 transitions. [2023-12-20 01:27:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:27:33,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:33,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:27:33,415 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:33,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1838096755, now seen corresponding path program 1 times [2023-12-20 01:27:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19471406] [2023-12-20 01:27:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:33,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:33,517 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 01:27:33,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:33,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19471406] [2023-12-20 01:27:33,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19471406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:33,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:33,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:27:33,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359618972] [2023-12-20 01:27:33,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:33,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:27:33,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:27:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:27:33,519 INFO L87 Difference]: Start difference. First operand 9944 states and 15928 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 01:27:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:33,742 INFO L93 Difference]: Finished difference Result 28494 states and 45791 transitions. [2023-12-20 01:27:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:27:33,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-20 01:27:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:33,771 INFO L225 Difference]: With dead ends: 28494 [2023-12-20 01:27:33,772 INFO L226 Difference]: Without dead ends: 18626 [2023-12-20 01:27:33,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:27:33,784 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 92 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:33,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 702 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18626 states. [2023-12-20 01:27:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18626 to 18624. [2023-12-20 01:27:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 18623 states have (on average 1.5880899962412072) internal successors, (29575), 18623 states have internal predecessors, (29575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 29575 transitions. [2023-12-20 01:27:34,207 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 29575 transitions. Word has length 77 [2023-12-20 01:27:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:34,207 INFO L495 AbstractCegarLoop]: Abstraction has 18624 states and 29575 transitions. [2023-12-20 01:27:34,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 01:27:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 29575 transitions. [2023-12-20 01:27:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:27:34,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:34,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:34,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:27:34,208 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:34,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1131905386, now seen corresponding path program 1 times [2023-12-20 01:27:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:34,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988284984] [2023-12-20 01:27:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988284984] [2023-12-20 01:27:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988284984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:34,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:34,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:27:34,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332559053] [2023-12-20 01:27:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:34,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:27:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:27:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:27:34,359 INFO L87 Difference]: Start difference. First operand 18624 states and 29575 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 01:27:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:34,571 INFO L93 Difference]: Finished difference Result 19712 states and 31024 transitions. [2023-12-20 01:27:34,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:27:34,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 01:27:34,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:34,601 INFO L225 Difference]: With dead ends: 19712 [2023-12-20 01:27:34,601 INFO L226 Difference]: Without dead ends: 19710 [2023-12-20 01:27:34,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:27:34,605 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:34,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 955 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19710 states. [2023-12-20 01:27:34,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19710 to 19348. [2023-12-20 01:27:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19348 states, 19347 states have (on average 1.5656174083837286) internal successors, (30290), 19347 states have internal predecessors, (30290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19348 states to 19348 states and 30290 transitions. [2023-12-20 01:27:34,918 INFO L78 Accepts]: Start accepts. Automaton has 19348 states and 30290 transitions. Word has length 78 [2023-12-20 01:27:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:34,918 INFO L495 AbstractCegarLoop]: Abstraction has 19348 states and 30290 transitions. [2023-12-20 01:27:34,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 01:27:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 19348 states and 30290 transitions. [2023-12-20 01:27:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 01:27:34,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:34,920 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 01:27:34,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:27:34,920 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:34,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash -89310492, now seen corresponding path program 1 times [2023-12-20 01:27:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:34,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579737308] [2023-12-20 01:27:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:27:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579737308] [2023-12-20 01:27:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579737308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:27:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998143209] [2023-12-20 01:27:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:34,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:27:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:34,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:27:34,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:27:34,996 INFO L87 Difference]: Start difference. First operand 19348 states and 30290 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:35,406 INFO L93 Difference]: Finished difference Result 47466 states and 74560 transitions. [2023-12-20 01:27:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:27:35,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 105 [2023-12-20 01:27:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:35,468 INFO L225 Difference]: With dead ends: 47466 [2023-12-20 01:27:35,468 INFO L226 Difference]: Without dead ends: 38254 [2023-12-20 01:27:35,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:27:35,485 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 448 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:35,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 810 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38254 states. [2023-12-20 01:27:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38254 to 29790. [2023-12-20 01:27:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29790 states, 29789 states have (on average 1.5638658565242203) internal successors, (46586), 29789 states have internal predecessors, (46586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29790 states to 29790 states and 46586 transitions. [2023-12-20 01:27:36,066 INFO L78 Accepts]: Start accepts. Automaton has 29790 states and 46586 transitions. Word has length 105 [2023-12-20 01:27:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:36,066 INFO L495 AbstractCegarLoop]: Abstraction has 29790 states and 46586 transitions. [2023-12-20 01:27:36,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 29790 states and 46586 transitions. [2023-12-20 01:27:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 01:27:36,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:36,068 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 01:27:36,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:27:36,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:36,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1367539108, now seen corresponding path program 1 times [2023-12-20 01:27:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:36,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449996563] [2023-12-20 01:27:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:36,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:27:36,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:36,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449996563] [2023-12-20 01:27:36,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449996563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:36,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:36,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:27:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852855087] [2023-12-20 01:27:36,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:36,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:27:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:27:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:27:36,145 INFO L87 Difference]: Start difference. First operand 29790 states and 46586 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:36,721 INFO L93 Difference]: Finished difference Result 51182 states and 80404 transitions. [2023-12-20 01:27:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:27:36,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-20 01:27:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:36,795 INFO L225 Difference]: With dead ends: 51182 [2023-12-20 01:27:36,795 INFO L226 Difference]: Without dead ends: 41970 [2023-12-20 01:27:36,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:27:36,819 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 441 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:36,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 932 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41970 states. [2023-12-20 01:27:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41970 to 40428. [2023-12-20 01:27:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40428 states, 40427 states have (on average 1.5644000296831326) internal successors, (63244), 40427 states have internal predecessors, (63244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40428 states to 40428 states and 63244 transitions. [2023-12-20 01:27:37,578 INFO L78 Accepts]: Start accepts. Automaton has 40428 states and 63244 transitions. Word has length 105 [2023-12-20 01:27:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:37,578 INFO L495 AbstractCegarLoop]: Abstraction has 40428 states and 63244 transitions. [2023-12-20 01:27:37,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 40428 states and 63244 transitions. [2023-12-20 01:27:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 01:27:37,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:37,580 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 01:27:37,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:27:37,580 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:37,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash 897610726, now seen corresponding path program 1 times [2023-12-20 01:27:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:37,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297980194] [2023-12-20 01:27:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:27:37,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:37,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297980194] [2023-12-20 01:27:37,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297980194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:37,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:37,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217381561] [2023-12-20 01:27:37,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:37,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:37,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:37,622 INFO L87 Difference]: Start difference. First operand 40428 states and 63244 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:38,387 INFO L93 Difference]: Finished difference Result 84543 states and 132909 transitions. [2023-12-20 01:27:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:38,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-20 01:27:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:38,536 INFO L225 Difference]: With dead ends: 84543 [2023-12-20 01:27:38,536 INFO L226 Difference]: Without dead ends: 75101 [2023-12-20 01:27:38,556 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 01:27:38,557 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 81 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:38,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 365 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:38,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75101 states. [2023-12-20 01:27:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75101 to 74984. [2023-12-20 01:27:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74984 states, 74983 states have (on average 1.567848712374805) internal successors, (117562), 74983 states have internal predecessors, (117562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74984 states to 74984 states and 117562 transitions. [2023-12-20 01:27:39,944 INFO L78 Accepts]: Start accepts. Automaton has 74984 states and 117562 transitions. Word has length 105 [2023-12-20 01:27:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:39,944 INFO L495 AbstractCegarLoop]: Abstraction has 74984 states and 117562 transitions. [2023-12-20 01:27:39,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 74984 states and 117562 transitions. [2023-12-20 01:27:39,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 01:27:39,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:39,947 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 01:27:39,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:27:39,948 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:39,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:39,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1920686877, now seen corresponding path program 1 times [2023-12-20 01:27:39,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:39,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116212936] [2023-12-20 01:27:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:39,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:40,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:40,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116212936] [2023-12-20 01:27:40,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116212936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:40,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:40,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:40,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018399867] [2023-12-20 01:27:40,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:40,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:40,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:40,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:40,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:40,167 INFO L87 Difference]: Start difference. First operand 74984 states and 117562 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:41,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:41,723 INFO L93 Difference]: Finished difference Result 223211 states and 349256 transitions. [2023-12-20 01:27:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:41,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-20 01:27:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:42,057 INFO L225 Difference]: With dead ends: 223211 [2023-12-20 01:27:42,057 INFO L226 Difference]: Without dead ends: 148297 [2023-12-20 01:27:42,128 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 01:27:42,129 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 131 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:42,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 440 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148297 states. [2023-12-20 01:27:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148297 to 148295. [2023-12-20 01:27:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148295 states, 148294 states have (on average 1.5518834207722496) internal successors, (230135), 148294 states have internal predecessors, (230135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148295 states to 148295 states and 230135 transitions. [2023-12-20 01:27:45,092 INFO L78 Accepts]: Start accepts. Automaton has 148295 states and 230135 transitions. Word has length 106 [2023-12-20 01:27:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:45,092 INFO L495 AbstractCegarLoop]: Abstraction has 148295 states and 230135 transitions. [2023-12-20 01:27:45,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 148295 states and 230135 transitions. [2023-12-20 01:27:45,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 01:27:45,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:45,102 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 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 01:27:45,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:27:45,102 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:45,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:45,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1483911125, now seen corresponding path program 1 times [2023-12-20 01:27:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:45,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242273766] [2023-12-20 01:27:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:45,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:27:45,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242273766] [2023-12-20 01:27:45,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242273766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:45,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:45,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:27:45,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092168789] [2023-12-20 01:27:45,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:45,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:27:45,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:27:45,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:27:45,185 INFO L87 Difference]: Start difference. First operand 148295 states and 230135 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:46,948 INFO L93 Difference]: Finished difference Result 240663 states and 374938 transitions. [2023-12-20 01:27:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:27:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 01:27:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:47,216 INFO L225 Difference]: With dead ends: 240663 [2023-12-20 01:27:47,217 INFO L226 Difference]: Without dead ends: 154783 [2023-12-20 01:27:47,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:27:47,258 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 188 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:47,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 597 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154783 states. [2023-12-20 01:27:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154783 to 103357. [2023-12-20 01:27:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103357 states, 103356 states have (on average 1.546431750454739) internal successors, (159833), 103356 states have internal predecessors, (159833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103357 states to 103357 states and 159833 transitions. [2023-12-20 01:27:49,567 INFO L78 Accepts]: Start accepts. Automaton has 103357 states and 159833 transitions. Word has length 106 [2023-12-20 01:27:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:49,567 INFO L495 AbstractCegarLoop]: Abstraction has 103357 states and 159833 transitions. [2023-12-20 01:27:49,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 103357 states and 159833 transitions. [2023-12-20 01:27:49,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 01:27:49,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:49,570 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 01:27:49,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:27:49,570 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:49,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:49,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1302958147, now seen corresponding path program 1 times [2023-12-20 01:27:49,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:49,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941506644] [2023-12-20 01:27:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:49,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941506644] [2023-12-20 01:27:49,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941506644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:49,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:49,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692056630] [2023-12-20 01:27:49,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:49,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:49,609 INFO L87 Difference]: Start difference. First operand 103357 states and 159833 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:52,050 INFO L93 Difference]: Finished difference Result 307656 states and 474768 transitions. [2023-12-20 01:27:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:52,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-20 01:27:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:52,538 INFO L225 Difference]: With dead ends: 307656 [2023-12-20 01:27:52,539 INFO L226 Difference]: Without dead ends: 204430 [2023-12-20 01:27:52,585 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 01:27:52,587 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 150 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:52,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 466 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204430 states. [2023-12-20 01:27:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204430 to 204428. [2023-12-20 01:27:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204428 states, 204427 states have (on average 1.5302675282619222) internal successors, (312828), 204427 states have internal predecessors, (312828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204428 states to 204428 states and 312828 transitions. [2023-12-20 01:27:56,610 INFO L78 Accepts]: Start accepts. Automaton has 204428 states and 312828 transitions. Word has length 106 [2023-12-20 01:27:56,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:56,610 INFO L495 AbstractCegarLoop]: Abstraction has 204428 states and 312828 transitions. [2023-12-20 01:27:56,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 204428 states and 312828 transitions. [2023-12-20 01:27:56,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:27:56,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:56,615 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:56,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 01:27:56,615 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:56,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1231223721, now seen corresponding path program 1 times [2023-12-20 01:27:56,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:56,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028151180] [2023-12-20 01:27:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:56,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:56,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:56,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028151180] [2023-12-20 01:27:56,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028151180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:56,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:56,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:56,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425078268] [2023-12-20 01:27:56,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:56,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:56,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:56,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:56,656 INFO L87 Difference]: Start difference. First operand 204428 states and 312828 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:59,233 INFO L93 Difference]: Finished difference Result 305494 states and 465810 transitions. [2023-12-20 01:27:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:59,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-20 01:27:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:59,699 INFO L225 Difference]: With dead ends: 305494 [2023-12-20 01:27:59,699 INFO L226 Difference]: Without dead ends: 204530 [2023-12-20 01:27:59,799 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 01:27:59,800 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 124 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 533 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 01:27:59,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 533 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204530 states. [2023-12-20 01:28:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204530 to 204528. [2023-12-20 01:28:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204528 states, 204527 states have (on average 1.5189681557936117) internal successors, (310670), 204527 states have internal predecessors, (310670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204528 states to 204528 states and 310670 transitions. [2023-12-20 01:28:04,148 INFO L78 Accepts]: Start accepts. Automaton has 204528 states and 310670 transitions. Word has length 107 [2023-12-20 01:28:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:28:04,148 INFO L495 AbstractCegarLoop]: Abstraction has 204528 states and 310670 transitions. [2023-12-20 01:28:04,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 204528 states and 310670 transitions. [2023-12-20 01:28:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:28:04,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:28:04,166 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:04,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 01:28:04,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:28:04,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:28:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash 83820429, now seen corresponding path program 1 times [2023-12-20 01:28:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:28:04,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895604925] [2023-12-20 01:28:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:28:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:28:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:28:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:28:04,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:28:04,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895604925] [2023-12-20 01:28:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895604925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:28:04,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:28:04,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:28:04,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934945671] [2023-12-20 01:28:04,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:28:04,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:28:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:28:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:28:04,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:28:04,216 INFO L87 Difference]: Start difference. First operand 204528 states and 310670 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:28:06,407 INFO L93 Difference]: Finished difference Result 274455 states and 415530 transitions. [2023-12-20 01:28:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:28:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-20 01:28:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:28:06,659 INFO L225 Difference]: With dead ends: 274455 [2023-12-20 01:28:06,659 INFO L226 Difference]: Without dead ends: 173501 [2023-12-20 01:28:06,711 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 01:28:06,714 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 138 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 549 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 01:28:06,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 549 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:28:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173501 states. [2023-12-20 01:28:09,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173501 to 173499. [2023-12-20 01:28:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173499 states, 173498 states have (on average 1.5074640629863167) internal successors, (261542), 173498 states have internal predecessors, (261542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173499 states to 173499 states and 261542 transitions. [2023-12-20 01:28:10,141 INFO L78 Accepts]: Start accepts. Automaton has 173499 states and 261542 transitions. Word has length 107 [2023-12-20 01:28:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:28:10,141 INFO L495 AbstractCegarLoop]: Abstraction has 173499 states and 261542 transitions. [2023-12-20 01:28:10,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 173499 states and 261542 transitions. [2023-12-20 01:28:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:28:10,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:28:10,150 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 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 01:28:10,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:28:10,151 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:28:10,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:28:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2056530323, now seen corresponding path program 1 times [2023-12-20 01:28:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:28:10,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744175140] [2023-12-20 01:28:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:28:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:28:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:28:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:28:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:28:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744175140] [2023-12-20 01:28:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744175140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:28:10,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:28:10,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:28:10,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399338719] [2023-12-20 01:28:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:28:10,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:28:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:28:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:28:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:28:10,258 INFO L87 Difference]: Start difference. First operand 173499 states and 261542 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:28:12,967 INFO L93 Difference]: Finished difference Result 308341 states and 468169 transitions. [2023-12-20 01:28:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:28:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2023-12-20 01:28:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:28:13,376 INFO L225 Difference]: With dead ends: 308341 [2023-12-20 01:28:13,377 INFO L226 Difference]: Without dead ends: 240231 [2023-12-20 01:28:13,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:28:13,444 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 191 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:28:13,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 664 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:28:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240231 states. [2023-12-20 01:28:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240231 to 217775. [2023-12-20 01:28:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217775 states, 217774 states have (on average 1.5069108341675315) internal successors, (328166), 217774 states have internal predecessors, (328166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217775 states to 217775 states and 328166 transitions. [2023-12-20 01:28:18,347 INFO L78 Accepts]: Start accepts. Automaton has 217775 states and 328166 transitions. Word has length 107 [2023-12-20 01:28:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:28:18,347 INFO L495 AbstractCegarLoop]: Abstraction has 217775 states and 328166 transitions. [2023-12-20 01:28:18,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 217775 states and 328166 transitions. [2023-12-20 01:28:18,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:28:18,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:28:18,350 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 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 01:28:18,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:28:18,351 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:28:18,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:28:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash 958573295, now seen corresponding path program 1 times [2023-12-20 01:28:18,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:28:18,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494476947] [2023-12-20 01:28:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:28:18,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:28:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:28:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:28:18,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:28:18,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494476947] [2023-12-20 01:28:18,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494476947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:28:18,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:28:18,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:28:18,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057565740] [2023-12-20 01:28:18,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:28:18,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:28:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:28:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:28:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:28:18,389 INFO L87 Difference]: Start difference. First operand 217775 states and 328166 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:28:22,678 INFO L93 Difference]: Finished difference Result 478297 states and 723360 transitions. [2023-12-20 01:28:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:28:22,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2023-12-20 01:28:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:28:23,368 INFO L225 Difference]: With dead ends: 478297 [2023-12-20 01:28:23,368 INFO L226 Difference]: Without dead ends: 380611 [2023-12-20 01:28:23,459 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 01:28:23,460 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 81 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:28:23,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 359 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:28:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380611 states. [2023-12-20 01:28:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380611 to 379565. [2023-12-20 01:28:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379565 states, 379564 states have (on average 1.5065548892940321) internal successors, (571834), 379564 states have internal predecessors, (571834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379565 states to 379565 states and 571834 transitions. [2023-12-20 01:28:31,360 INFO L78 Accepts]: Start accepts. Automaton has 379565 states and 571834 transitions. Word has length 107 [2023-12-20 01:28:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:28:31,361 INFO L495 AbstractCegarLoop]: Abstraction has 379565 states and 571834 transitions. [2023-12-20 01:28:31,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 379565 states and 571834 transitions. [2023-12-20 01:28:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:28:31,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:28:31,365 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 01:28:31,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 01:28:31,365 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:28:31,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:28:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1312816201, now seen corresponding path program 1 times [2023-12-20 01:28:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:28:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860178166] [2023-12-20 01:28:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:28:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:28:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:28:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:28:31,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:28:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860178166] [2023-12-20 01:28:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860178166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:28:31,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:28:31,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:28:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067697524] [2023-12-20 01:28:31,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:28:31,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:28:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:28:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:28:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:28:31,475 INFO L87 Difference]: Start difference. First operand 379565 states and 571834 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:28:36,985 INFO L93 Difference]: Finished difference Result 579127 states and 878468 transitions. [2023-12-20 01:28:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:28:36,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 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 108 [2023-12-20 01:28:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:28:37,893 INFO L225 Difference]: With dead ends: 579127 [2023-12-20 01:28:37,894 INFO L226 Difference]: Without dead ends: 478611 [2023-12-20 01:28:38,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:28:38,013 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 435 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:28:38,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 805 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:28:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478611 states. [2023-12-20 01:28:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478611 to 451101. [2023-12-20 01:28:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451101 states, 451100 states have (on average 1.5093105741520727) internal successors, (680850), 451100 states have internal predecessors, (680850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451101 states to 451101 states and 680850 transitions. [2023-12-20 01:28:48,678 INFO L78 Accepts]: Start accepts. Automaton has 451101 states and 680850 transitions. Word has length 108 [2023-12-20 01:28:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:28:48,699 INFO L495 AbstractCegarLoop]: Abstraction has 451101 states and 680850 transitions. [2023-12-20 01:28:48,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 451101 states and 680850 transitions. [2023-12-20 01:28:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:28:48,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:28:48,704 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 01:28:48,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 01:28:48,704 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:28:48,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:28:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 258344404, now seen corresponding path program 1 times [2023-12-20 01:28:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:28:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285368854] [2023-12-20 01:28:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:28:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:28:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:28:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:28:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:28:48,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285368854] [2023-12-20 01:28:48,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285368854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:28:48,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:28:48,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:28:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979315336] [2023-12-20 01:28:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:28:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:28:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:28:48,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:28:48,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:28:48,857 INFO L87 Difference]: Start difference. First operand 451101 states and 680850 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:28:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:28:56,139 INFO L93 Difference]: Finished difference Result 724015 states and 1099149 transitions. [2023-12-20 01:28:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:28:56,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-20 01:28:56,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:28:57,662 INFO L225 Difference]: With dead ends: 724015 [2023-12-20 01:28:57,663 INFO L226 Difference]: Without dead ends: 585377 [2023-12-20 01:28:57,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:28:57,790 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 202 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:28:57,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 593 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:28:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585377 states. [2023-12-20 01:29:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585377 to 549213. [2023-12-20 01:29:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549213 states, 549212 states have (on average 1.5087907766035702) internal successors, (828646), 549212 states have internal predecessors, (828646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:29:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549213 states to 549213 states and 828646 transitions. [2023-12-20 01:29:11,660 INFO L78 Accepts]: Start accepts. Automaton has 549213 states and 828646 transitions. Word has length 108 [2023-12-20 01:29:11,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:11,660 INFO L495 AbstractCegarLoop]: Abstraction has 549213 states and 828646 transitions. [2023-12-20 01:29:11,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:29:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 549213 states and 828646 transitions. [2023-12-20 01:29:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:29:11,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:11,672 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 01:29:11,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 01:29:11,673 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:11,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:11,673 INFO L85 PathProgramCache]: Analyzing trace with hash -134682606, now seen corresponding path program 1 times [2023-12-20 01:29:11,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:11,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935429148] [2023-12-20 01:29:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:29:11,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:11,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935429148] [2023-12-20 01:29:11,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935429148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:11,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:11,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081879819] [2023-12-20 01:29:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:11,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:11,796 INFO L87 Difference]: Start difference. First operand 549213 states and 828646 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)