/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:26:38,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:26:38,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:26:38,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:26:38,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:26:38,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:26:38,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:26:38,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:26:38,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:26:38,420 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:26:38,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:26:38,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:26:38,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:26:38,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:26:38,422 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:26:38,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:26:38,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:26:38,422 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:26:38,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:26:38,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:26:38,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:26:38,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:26:38,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:26:38,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:26:38,428 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:26:38,428 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:26:38,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:26:38,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:26:38,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:26:38,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:26:38,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:26:38,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:26:38,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:26:38,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:26:38,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:26:38,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:26:38,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:26:38,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:26:38,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:26:38,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:26:38,431 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:26:38,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:26:38,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:26:38,432 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:26:38,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:26:38,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:26:38,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:26:38,670 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:26:38,671 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:26:38,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2023-12-21 11:26:39,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:26:39,916 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:26:39,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2023-12-21 11:26:39,928 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b981530/07fbf2d730b343fdbfb7f22925f9ce7f/FLAG56dd943d0 [2023-12-21 11:26:39,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b981530/07fbf2d730b343fdbfb7f22925f9ce7f [2023-12-21 11:26:39,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:26:39,943 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:26:39,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:26:39,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:26:39,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:26:39,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:26:39" (1/1) ... [2023-12-21 11:26:39,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2f6818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:39, skipping insertion in model container [2023-12-21 11:26:39,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:26:39" (1/1) ... [2023-12-21 11:26:39,988 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:26:40,155 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_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2023-12-21 11:26:40,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:26:40,167 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:26:40,201 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_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2023-12-21 11:26:40,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:26:40,212 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:26:40,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40 WrapperNode [2023-12-21 11:26:40,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:26:40,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:26:40,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:26:40,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:26:40,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,256 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 445 [2023-12-21 11:26:40,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:26:40,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:26:40,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:26:40,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:26:40,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,268 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,279 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 11:26:40,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:26:40,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:26:40,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:26:40,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:26:40,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (1/1) ... [2023-12-21 11:26:40,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:26:40,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:40,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 11:26:40,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 11:26:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:26:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:26:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:26:40,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:26:40,441 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:26:40,442 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:26:40,772 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:26:40,796 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:26:40,796 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:26:40,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:26:40 BoogieIcfgContainer [2023-12-21 11:26:40,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:26:40,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:26:40,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:26:40,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:26:40,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:26:39" (1/3) ... [2023-12-21 11:26:40,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685544f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:26:40, skipping insertion in model container [2023-12-21 11:26:40,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:40" (2/3) ... [2023-12-21 11:26:40,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685544f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:26:40, skipping insertion in model container [2023-12-21 11:26:40,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:26:40" (3/3) ... [2023-12-21 11:26:40,802 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2023-12-21 11:26:40,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:26:40,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:26:40,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:26:40,853 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;@2acdbf05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:26:40,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:26:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.805084745762712) internal successors, (213), 119 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:26:40,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:40,867 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] [2023-12-21 11:26:40,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:40,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:40,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1208619071, now seen corresponding path program 1 times [2023-12-21 11:26:40,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:40,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075603283] [2023-12-21 11:26:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:40,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:41,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:41,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075603283] [2023-12-21 11:26:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075603283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:41,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:41,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:26:41,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383363720] [2023-12-21 11:26:41,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:41,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:26:41,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:41,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:26:41,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:26:41,122 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.805084745762712) internal successors, (213), 119 states have internal predecessors, (213), 0 states have call successors, (0), 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) [2023-12-21 11:26:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:41,150 INFO L93 Difference]: Finished difference Result 184 states and 325 transitions. [2023-12-21 11:26:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:26:41,151 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 [2023-12-21 11:26:41,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:41,157 INFO L225 Difference]: With dead ends: 184 [2023-12-21 11:26:41,157 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 11:26:41,159 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 [2023-12-21 11:26:41,161 INFO L413 NwaCegarLoop]: 205 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, 205 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 [2023-12-21 11:26:41,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 11:26:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-12-21 11:26:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.7777777777777777) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 208 transitions. [2023-12-21 11:26:41,187 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 208 transitions. Word has length 34 [2023-12-21 11:26:41,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:41,187 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 208 transitions. [2023-12-21 11:26:41,188 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) [2023-12-21 11:26:41,188 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 208 transitions. [2023-12-21 11:26:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:26:41,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:41,189 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] [2023-12-21 11:26:41,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:26:41,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:41,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1397404483, now seen corresponding path program 1 times [2023-12-21 11:26:41,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:41,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588349237] [2023-12-21 11:26:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:41,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:41,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588349237] [2023-12-21 11:26:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588349237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:41,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:26:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89677287] [2023-12-21 11:26:41,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:41,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:26:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:41,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:26:41,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:26:41,348 INFO L87 Difference]: Start difference. First operand 118 states and 208 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) [2023-12-21 11:26:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:41,423 INFO L93 Difference]: Finished difference Result 184 states and 319 transitions. [2023-12-21 11:26:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:26:41,423 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 [2023-12-21 11:26:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:41,424 INFO L225 Difference]: With dead ends: 184 [2023-12-21 11:26:41,425 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 11:26:41,425 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 [2023-12-21 11:26:41,426 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:41,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 585 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:26:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 11:26:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-12-21 11:26:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.547008547008547) internal successors, (181), 117 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 181 transitions. [2023-12-21 11:26:41,432 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 181 transitions. Word has length 34 [2023-12-21 11:26:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:41,432 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 181 transitions. [2023-12-21 11:26:41,432 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) [2023-12-21 11:26:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 181 transitions. [2023-12-21 11:26:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:26:41,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:41,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:26:41,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:41,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1613385332, now seen corresponding path program 1 times [2023-12-21 11:26:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:41,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826908021] [2023-12-21 11:26:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:41,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826908021] [2023-12-21 11:26:41,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826908021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:41,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:41,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:41,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133031853] [2023-12-21 11:26:41,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:41,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:41,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:41,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:41,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:41,542 INFO L87 Difference]: Start difference. First operand 118 states and 181 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:41,589 INFO L93 Difference]: Finished difference Result 235 states and 380 transitions. [2023-12-21 11:26:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:41,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 11:26:41,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:41,592 INFO L225 Difference]: With dead ends: 235 [2023-12-21 11:26:41,592 INFO L226 Difference]: Without dead ends: 172 [2023-12-21 11:26:41,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:41,593 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 82 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 311 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 [2023-12-21 11:26:41,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 311 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-21 11:26:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 169. [2023-12-21 11:26:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.5714285714285714) internal successors, (264), 168 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 264 transitions. [2023-12-21 11:26:41,601 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 264 transitions. Word has length 60 [2023-12-21 11:26:41,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:41,602 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 264 transitions. [2023-12-21 11:26:41,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 264 transitions. [2023-12-21 11:26:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 11:26:41,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:41,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:41,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:26:41,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:41,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1362282236, now seen corresponding path program 1 times [2023-12-21 11:26:41,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:41,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193521024] [2023-12-21 11:26:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:41,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:41,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:41,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193521024] [2023-12-21 11:26:41,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193521024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:41,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:41,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:41,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713054185] [2023-12-21 11:26:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:41,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:41,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:41,685 INFO L87 Difference]: Start difference. First operand 169 states and 264 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:41,703 INFO L93 Difference]: Finished difference Result 383 states and 620 transitions. [2023-12-21 11:26:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 11:26:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:41,705 INFO L225 Difference]: With dead ends: 383 [2023-12-21 11:26:41,705 INFO L226 Difference]: Without dead ends: 269 [2023-12-21 11:26:41,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:41,713 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 84 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 324 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 [2023-12-21 11:26:41,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 324 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-21 11:26:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2023-12-21 11:26:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.5984848484848484) internal successors, (422), 264 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 422 transitions. [2023-12-21 11:26:41,730 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 422 transitions. Word has length 62 [2023-12-21 11:26:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:41,731 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 422 transitions. [2023-12-21 11:26:41,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 422 transitions. [2023-12-21 11:26:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 11:26:41,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:41,733 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] [2023-12-21 11:26:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:26:41,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:41,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash -677250468, now seen corresponding path program 1 times [2023-12-21 11:26:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:41,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873041400] [2023-12-21 11:26:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:41,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:41,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:41,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873041400] [2023-12-21 11:26:41,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873041400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:41,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:41,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:41,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561450514] [2023-12-21 11:26:41,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:41,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:41,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:41,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:41,813 INFO L87 Difference]: Start difference. First operand 265 states and 422 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:41,838 INFO L93 Difference]: Finished difference Result 657 states and 1068 transitions. [2023-12-21 11:26:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:41,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-21 11:26:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:41,841 INFO L225 Difference]: With dead ends: 657 [2023-12-21 11:26:41,841 INFO L226 Difference]: Without dead ends: 447 [2023-12-21 11:26:41,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:41,847 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 78 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 325 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 [2023-12-21 11:26:41,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 325 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-21 11:26:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2023-12-21 11:26:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.6045454545454545) internal successors, (706), 440 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 706 transitions. [2023-12-21 11:26:41,869 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 706 transitions. Word has length 64 [2023-12-21 11:26:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:41,869 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 706 transitions. [2023-12-21 11:26:41,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 706 transitions. [2023-12-21 11:26:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 11:26:41,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:41,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:41,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:26:41,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:41,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash -338664426, now seen corresponding path program 1 times [2023-12-21 11:26:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275197144] [2023-12-21 11:26:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275197144] [2023-12-21 11:26:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275197144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:26:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727077836] [2023-12-21 11:26:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:26:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:26:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:26:42,004 INFO L87 Difference]: Start difference. First operand 441 states and 706 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:42,135 INFO L93 Difference]: Finished difference Result 1869 states and 3096 transitions. [2023-12-21 11:26:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:26:42,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-21 11:26:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:42,141 INFO L225 Difference]: With dead ends: 1869 [2023-12-21 11:26:42,141 INFO L226 Difference]: Without dead ends: 1483 [2023-12-21 11:26:42,142 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 [2023-12-21 11:26:42,143 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 726 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:42,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 973 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:26:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-12-21 11:26:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 778. [2023-12-21 11:26:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.6216216216216217) internal successors, (1260), 777 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1260 transitions. [2023-12-21 11:26:42,177 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1260 transitions. Word has length 66 [2023-12-21 11:26:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:42,178 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1260 transitions. [2023-12-21 11:26:42,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1260 transitions. [2023-12-21 11:26:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 11:26:42,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:42,180 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] [2023-12-21 11:26:42,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:26:42,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:42,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1971383680, now seen corresponding path program 1 times [2023-12-21 11:26:42,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170678450] [2023-12-21 11:26:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:42,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:42,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170678450] [2023-12-21 11:26:42,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170678450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:42,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:26:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458437942] [2023-12-21 11:26:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:26:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:42,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:26:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:26:42,251 INFO L87 Difference]: Start difference. First operand 778 states and 1260 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) [2023-12-21 11:26:42,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:42,311 INFO L93 Difference]: Finished difference Result 2263 states and 3739 transitions. [2023-12-21 11:26:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:26:42,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 [2023-12-21 11:26:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:42,316 INFO L225 Difference]: With dead ends: 2263 [2023-12-21 11:26:42,316 INFO L226 Difference]: Without dead ends: 1540 [2023-12-21 11:26:42,317 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 [2023-12-21 11:26:42,318 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 307 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:42,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 513 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:42,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-12-21 11:26:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1150. [2023-12-21 11:26:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.6335944299390774) internal successors, (1877), 1149 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1877 transitions. [2023-12-21 11:26:42,341 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1877 transitions. Word has length 67 [2023-12-21 11:26:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:42,341 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1877 transitions. [2023-12-21 11:26:42,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) [2023-12-21 11:26:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1877 transitions. [2023-12-21 11:26:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 11:26:42,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:42,342 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] [2023-12-21 11:26:42,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:26:42,343 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:42,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:42,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1040621249, now seen corresponding path program 1 times [2023-12-21 11:26:42,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:42,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313941053] [2023-12-21 11:26:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:42,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:42,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:42,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313941053] [2023-12-21 11:26:42,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313941053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:42,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:42,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:26:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924083618] [2023-12-21 11:26:42,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:42,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:26:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:42,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:26:42,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:26:42,399 INFO L87 Difference]: Start difference. First operand 1150 states and 1877 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:42,473 INFO L93 Difference]: Finished difference Result 3331 states and 5497 transitions. [2023-12-21 11:26:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:26:42,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-21 11:26:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:42,479 INFO L225 Difference]: With dead ends: 3331 [2023-12-21 11:26:42,479 INFO L226 Difference]: Without dead ends: 2236 [2023-12-21 11:26:42,481 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 [2023-12-21 11:26:42,481 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 305 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 577 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 [2023-12-21 11:26:42,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 577 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:42,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2023-12-21 11:26:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1681. [2023-12-21 11:26:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1680 states have (on average 1.6333333333333333) internal successors, (2744), 1680 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2744 transitions. [2023-12-21 11:26:42,517 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2744 transitions. Word has length 68 [2023-12-21 11:26:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:42,518 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2744 transitions. [2023-12-21 11:26:42,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2744 transitions. [2023-12-21 11:26:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:26:42,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:42,519 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] [2023-12-21 11:26:42,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:26:42,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:42,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2048662089, now seen corresponding path program 1 times [2023-12-21 11:26:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158941947] [2023-12-21 11:26:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158941947] [2023-12-21 11:26:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158941947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:42,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:42,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:26:42,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878080293] [2023-12-21 11:26:42,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:42,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:26:42,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:42,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:26:42,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:26:42,587 INFO L87 Difference]: Start difference. First operand 1681 states and 2744 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2023-12-21 11:26:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:42,669 INFO L93 Difference]: Finished difference Result 4851 states and 7989 transitions. [2023-12-21 11:26:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:26:42,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 [2023-12-21 11:26:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:42,696 INFO L225 Difference]: With dead ends: 4851 [2023-12-21 11:26:42,696 INFO L226 Difference]: Without dead ends: 3225 [2023-12-21 11:26:42,699 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 [2023-12-21 11:26:42,702 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 303 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 584 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 [2023-12-21 11:26:42,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 584 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2023-12-21 11:26:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 2437. [2023-12-21 11:26:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2436 states have (on average 1.6313628899835797) internal successors, (3974), 2436 states have internal predecessors, (3974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3974 transitions. [2023-12-21 11:26:42,756 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3974 transitions. Word has length 69 [2023-12-21 11:26:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:42,756 INFO L495 AbstractCegarLoop]: Abstraction has 2437 states and 3974 transitions. [2023-12-21 11:26:42,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2023-12-21 11:26:42,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3974 transitions. [2023-12-21 11:26:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:26:42,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:42,758 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] [2023-12-21 11:26:42,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:26:42,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:42,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1069193331, now seen corresponding path program 1 times [2023-12-21 11:26:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:42,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092538499] [2023-12-21 11:26:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:42,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:42,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092538499] [2023-12-21 11:26:42,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092538499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:42,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:42,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:42,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115056893] [2023-12-21 11:26:42,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:42,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:42,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:42,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:42,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:42,801 INFO L87 Difference]: Start difference. First operand 2437 states and 3974 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2023-12-21 11:26:42,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:42,855 INFO L93 Difference]: Finished difference Result 5608 states and 9156 transitions. [2023-12-21 11:26:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:42,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2023-12-21 11:26:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:42,866 INFO L225 Difference]: With dead ends: 5608 [2023-12-21 11:26:42,866 INFO L226 Difference]: Without dead ends: 3870 [2023-12-21 11:26:42,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:42,870 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 77 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:42,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 374 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2023-12-21 11:26:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3868. [2023-12-21 11:26:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 1.6141711921386088) internal successors, (6242), 3867 states have internal predecessors, (6242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 6242 transitions. [2023-12-21 11:26:42,956 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 6242 transitions. Word has length 69 [2023-12-21 11:26:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:42,956 INFO L495 AbstractCegarLoop]: Abstraction has 3868 states and 6242 transitions. [2023-12-21 11:26:42,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2023-12-21 11:26:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 6242 transitions. [2023-12-21 11:26:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:26:42,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:42,957 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] [2023-12-21 11:26:42,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:26:42,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:42,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash -999927296, now seen corresponding path program 1 times [2023-12-21 11:26:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:42,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195342327] [2023-12-21 11:26:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:42,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:42,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195342327] [2023-12-21 11:26:42,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195342327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:42,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:42,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:42,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275988022] [2023-12-21 11:26:42,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:42,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:42,993 INFO L87 Difference]: Start difference. First operand 3868 states and 6242 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2023-12-21 11:26:43,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:43,063 INFO L93 Difference]: Finished difference Result 8552 states and 13864 transitions. [2023-12-21 11:26:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:43,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2023-12-21 11:26:43,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:43,079 INFO L225 Difference]: With dead ends: 8552 [2023-12-21 11:26:43,079 INFO L226 Difference]: Without dead ends: 5809 [2023-12-21 11:26:43,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:43,084 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 83 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:43,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 397 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2023-12-21 11:26:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5807. [2023-12-21 11:26:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5807 states, 5806 states have (on average 1.6036858422321736) internal successors, (9311), 5806 states have internal predecessors, (9311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:43,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 9311 transitions. [2023-12-21 11:26:43,223 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 9311 transitions. Word has length 69 [2023-12-21 11:26:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:43,223 INFO L495 AbstractCegarLoop]: Abstraction has 5807 states and 9311 transitions. [2023-12-21 11:26:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2023-12-21 11:26:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 9311 transitions. [2023-12-21 11:26:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:26:43,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:43,224 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] [2023-12-21 11:26:43,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:26:43,224 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:43,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash 610996403, now seen corresponding path program 1 times [2023-12-21 11:26:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:43,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334454408] [2023-12-21 11:26:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:43,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334454408] [2023-12-21 11:26:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334454408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:43,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:43,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233586899] [2023-12-21 11:26:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:43,261 INFO L87 Difference]: Start difference. First operand 5807 states and 9311 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2023-12-21 11:26:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:43,375 INFO L93 Difference]: Finished difference Result 13153 states and 21350 transitions. [2023-12-21 11:26:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:43,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2023-12-21 11:26:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:43,409 INFO L225 Difference]: With dead ends: 13153 [2023-12-21 11:26:43,410 INFO L226 Difference]: Without dead ends: 8874 [2023-12-21 11:26:43,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:43,417 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 89 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:43,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 412 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8874 states. [2023-12-21 11:26:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8874 to 8872. [2023-12-21 11:26:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8872 states, 8871 states have (on average 1.599030548979822) internal successors, (14185), 8871 states have internal predecessors, (14185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8872 states to 8872 states and 14185 transitions. [2023-12-21 11:26:43,664 INFO L78 Accepts]: Start accepts. Automaton has 8872 states and 14185 transitions. Word has length 69 [2023-12-21 11:26:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:43,665 INFO L495 AbstractCegarLoop]: Abstraction has 8872 states and 14185 transitions. [2023-12-21 11:26:43,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2023-12-21 11:26:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8872 states and 14185 transitions. [2023-12-21 11:26:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 11:26:43,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:43,668 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] [2023-12-21 11:26:43,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:26:43,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:43,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash 192928305, now seen corresponding path program 1 times [2023-12-21 11:26:43,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:43,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965116051] [2023-12-21 11:26:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:43,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:43,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:43,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965116051] [2023-12-21 11:26:43,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965116051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:43,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:43,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:26:43,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178041930] [2023-12-21 11:26:43,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:43,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:26:43,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:43,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:26:43,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:26:43,807 INFO L87 Difference]: Start difference. First operand 8872 states and 14185 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2023-12-21 11:26:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:43,960 INFO L93 Difference]: Finished difference Result 17677 states and 28280 transitions. [2023-12-21 11:26:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:26:43,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 [2023-12-21 11:26:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:43,975 INFO L225 Difference]: With dead ends: 17677 [2023-12-21 11:26:43,975 INFO L226 Difference]: Without dead ends: 8874 [2023-12-21 11:26:43,984 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 [2023-12-21 11:26:43,985 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 157 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 479 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 [2023-12-21 11:26:43,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 479 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8874 states. [2023-12-21 11:26:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8874 to 8872. [2023-12-21 11:26:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8872 states, 8871 states have (on average 1.584939691128396) internal successors, (14060), 8871 states have internal predecessors, (14060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8872 states to 8872 states and 14060 transitions. [2023-12-21 11:26:44,182 INFO L78 Accepts]: Start accepts. Automaton has 8872 states and 14060 transitions. Word has length 71 [2023-12-21 11:26:44,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:44,182 INFO L495 AbstractCegarLoop]: Abstraction has 8872 states and 14060 transitions. [2023-12-21 11:26:44,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2023-12-21 11:26:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 8872 states and 14060 transitions. [2023-12-21 11:26:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:26:44,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:44,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:44,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:26:44,183 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:44,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash -604805220, now seen corresponding path program 1 times [2023-12-21 11:26:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497450608] [2023-12-21 11:26:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:44,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:44,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497450608] [2023-12-21 11:26:44,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497450608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:44,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:44,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:26:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594340990] [2023-12-21 11:26:44,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:44,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:26:44,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:44,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:26:44,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:26:44,310 INFO L87 Difference]: Start difference. First operand 8872 states and 14060 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) [2023-12-21 11:26:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:44,586 INFO L93 Difference]: Finished difference Result 25427 states and 40452 transitions. [2023-12-21 11:26:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:26:44,587 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 [2023-12-21 11:26:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:44,615 INFO L225 Difference]: With dead ends: 25427 [2023-12-21 11:26:44,615 INFO L226 Difference]: Without dead ends: 16624 [2023-12-21 11:26:44,623 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 [2023-12-21 11:26:44,624 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 229 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:44,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 483 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16624 states. [2023-12-21 11:26:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16624 to 16622. [2023-12-21 11:26:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16622 states, 16621 states have (on average 1.5698814752421635) internal successors, (26093), 16621 states have internal predecessors, (26093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16622 states to 16622 states and 26093 transitions. [2023-12-21 11:26:44,991 INFO L78 Accepts]: Start accepts. Automaton has 16622 states and 26093 transitions. Word has length 74 [2023-12-21 11:26:44,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:44,991 INFO L495 AbstractCegarLoop]: Abstraction has 16622 states and 26093 transitions. [2023-12-21 11:26:44,991 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) [2023-12-21 11:26:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 16622 states and 26093 transitions. [2023-12-21 11:26:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 11:26:44,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:44,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:26:44,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:26:44,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:44,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1583611864, now seen corresponding path program 1 times [2023-12-21 11:26:44,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:44,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446256192] [2023-12-21 11:26:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:45,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:45,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446256192] [2023-12-21 11:26:45,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446256192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:45,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:45,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:26:45,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134756695] [2023-12-21 11:26:45,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:45,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:26:45,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:45,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:26:45,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:26:45,149 INFO L87 Difference]: Start difference. First operand 16622 states and 26093 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:45,342 INFO L93 Difference]: Finished difference Result 17710 states and 27542 transitions. [2023-12-21 11:26:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:26:45,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 11:26:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:45,368 INFO L225 Difference]: With dead ends: 17710 [2023-12-21 11:26:45,368 INFO L226 Difference]: Without dead ends: 17708 [2023-12-21 11:26:45,374 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 [2023-12-21 11:26:45,375 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:45,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 518 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17708 states. [2023-12-21 11:26:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17708 to 17346. [2023-12-21 11:26:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17346 states, 17345 states have (on average 1.5455750936869415) internal successors, (26808), 17345 states have internal predecessors, (26808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17346 states to 17346 states and 26808 transitions. [2023-12-21 11:26:45,662 INFO L78 Accepts]: Start accepts. Automaton has 17346 states and 26808 transitions. Word has length 75 [2023-12-21 11:26:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:45,662 INFO L495 AbstractCegarLoop]: Abstraction has 17346 states and 26808 transitions. [2023-12-21 11:26:45,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 17346 states and 26808 transitions. [2023-12-21 11:26:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:26:45,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:45,663 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] [2023-12-21 11:26:45,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:26:45,664 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:45,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1304758470, now seen corresponding path program 1 times [2023-12-21 11:26:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:45,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890419932] [2023-12-21 11:26:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:45,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:26:45,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:45,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890419932] [2023-12-21 11:26:45,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890419932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:45,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:45,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:45,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728008450] [2023-12-21 11:26:45,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:45,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:45,752 INFO L87 Difference]: Start difference. First operand 17346 states and 26808 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:46,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:46,074 INFO L93 Difference]: Finished difference Result 51789 states and 79970 transitions. [2023-12-21 11:26:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:46,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 11:26:46,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:46,132 INFO L225 Difference]: With dead ends: 51789 [2023-12-21 11:26:46,132 INFO L226 Difference]: Without dead ends: 34503 [2023-12-21 11:26:46,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:46,155 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 116 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 407 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 [2023-12-21 11:26:46,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 407 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34503 states. [2023-12-21 11:26:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34503 to 34501. [2023-12-21 11:26:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34501 states, 34500 states have (on average 1.5310434782608695) internal successors, (52821), 34500 states have internal predecessors, (52821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34501 states to 34501 states and 52821 transitions. [2023-12-21 11:26:46,852 INFO L78 Accepts]: Start accepts. Automaton has 34501 states and 52821 transitions. Word has length 101 [2023-12-21 11:26:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:46,852 INFO L495 AbstractCegarLoop]: Abstraction has 34501 states and 52821 transitions. [2023-12-21 11:26:46,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 34501 states and 52821 transitions. [2023-12-21 11:26:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:26:46,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:46,855 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] [2023-12-21 11:26:46,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:26:46,855 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:46,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1374024505, now seen corresponding path program 1 times [2023-12-21 11:26:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:46,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337087236] [2023-12-21 11:26:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:46,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:26:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337087236] [2023-12-21 11:26:46,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337087236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:46,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:46,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:46,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211102006] [2023-12-21 11:26:46,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:46,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:46,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:46,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:46,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:46,913 INFO L87 Difference]: Start difference. First operand 34501 states and 52821 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:47,790 INFO L93 Difference]: Finished difference Result 103023 states and 157587 transitions. [2023-12-21 11:26:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:47,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 11:26:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:47,949 INFO L225 Difference]: With dead ends: 103023 [2023-12-21 11:26:47,950 INFO L226 Difference]: Without dead ends: 68624 [2023-12-21 11:26:47,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:47,980 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 102 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 392 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 [2023-12-21 11:26:47,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:48,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68624 states. [2023-12-21 11:26:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68624 to 68622. [2023-12-21 11:26:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68622 states, 68621 states have (on average 1.5163433934218389) internal successors, (104053), 68621 states have internal predecessors, (104053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68622 states to 68622 states and 104053 transitions. [2023-12-21 11:26:49,367 INFO L78 Accepts]: Start accepts. Automaton has 68622 states and 104053 transitions. Word has length 101 [2023-12-21 11:26:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:49,367 INFO L495 AbstractCegarLoop]: Abstraction has 68622 states and 104053 transitions. [2023-12-21 11:26:49,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 68622 states and 104053 transitions. [2023-12-21 11:26:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:26:49,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:49,371 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] [2023-12-21 11:26:49,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:26:49,371 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:49,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:49,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1310019092, now seen corresponding path program 1 times [2023-12-21 11:26:49,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:49,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332713966] [2023-12-21 11:26:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:49,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:49,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332713966] [2023-12-21 11:26:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332713966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:49,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728625773] [2023-12-21 11:26:49,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:49,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:49,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:49,418 INFO L87 Difference]: Start difference. First operand 68622 states and 104053 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:50,764 INFO L93 Difference]: Finished difference Result 204954 states and 310505 transitions. [2023-12-21 11:26:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:50,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 11:26:50,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:51,007 INFO L225 Difference]: With dead ends: 204954 [2023-12-21 11:26:51,008 INFO L226 Difference]: Without dead ends: 136528 [2023-12-21 11:26:51,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:51,073 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 117 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 406 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 [2023-12-21 11:26:51,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 406 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:51,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136528 states. [2023-12-21 11:26:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136528 to 136526. [2023-12-21 11:26:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136526 states, 136525 states have (on average 1.501549166819264) internal successors, (204999), 136525 states have internal predecessors, (204999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136526 states to 136526 states and 204999 transitions. [2023-12-21 11:26:53,889 INFO L78 Accepts]: Start accepts. Automaton has 136526 states and 204999 transitions. Word has length 101 [2023-12-21 11:26:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:53,889 INFO L495 AbstractCegarLoop]: Abstraction has 136526 states and 204999 transitions. [2023-12-21 11:26:53,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 136526 states and 204999 transitions. [2023-12-21 11:26:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:26:54,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:54,070 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] [2023-12-21 11:26:54,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:26:54,071 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:54,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1325537810, now seen corresponding path program 1 times [2023-12-21 11:26:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:54,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959602036] [2023-12-21 11:26:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:26:54,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959602036] [2023-12-21 11:26:54,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959602036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:54,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:54,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:26:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247930533] [2023-12-21 11:26:54,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:54,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:26:54,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:26:54,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:54,135 INFO L87 Difference]: Start difference. First operand 136526 states and 204999 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:26:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:56,834 INFO L93 Difference]: Finished difference Result 407782 states and 611758 transitions. [2023-12-21 11:26:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:26:56,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 11:26:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:57,489 INFO L225 Difference]: With dead ends: 407782 [2023-12-21 11:26:57,489 INFO L226 Difference]: Without dead ends: 271656 [2023-12-21 11:26:57,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:26:57,564 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 136 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 423 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 [2023-12-21 11:26:57,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 423 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:26:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271656 states. [2023-12-21 11:27:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271656 to 271654. [2023-12-21 11:27:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271654 states, 271653 states have (on average 1.4866612921631641) internal successors, (403856), 271653 states have internal predecessors, (403856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:27:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271654 states to 271654 states and 403856 transitions. [2023-12-21 11:27:03,009 INFO L78 Accepts]: Start accepts. Automaton has 271654 states and 403856 transitions. Word has length 101 [2023-12-21 11:27:03,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:03,009 INFO L495 AbstractCegarLoop]: Abstraction has 271654 states and 403856 transitions. [2023-12-21 11:27:03,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:27:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 271654 states and 403856 transitions. [2023-12-21 11:27:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:27:03,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:03,021 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:27:03,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:27:03,021 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:03,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2072036208, now seen corresponding path program 1 times [2023-12-21 11:27:03,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:03,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637161309] [2023-12-21 11:27:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:03,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:27:03,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637161309] [2023-12-21 11:27:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637161309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:27:03,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:27:03,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:27:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970032296] [2023-12-21 11:27:03,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:27:03,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:27:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:03,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:27:03,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:27:03,069 INFO L87 Difference]: Start difference. First operand 271654 states and 403856 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) [2023-12-21 11:27:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:07,816 INFO L93 Difference]: Finished difference Result 571874 states and 856070 transitions. [2023-12-21 11:27:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:27:07,817 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 101 [2023-12-21 11:27:07,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:08,694 INFO L225 Difference]: With dead ends: 571874 [2023-12-21 11:27:08,695 INFO L226 Difference]: Without dead ends: 438752 [2023-12-21 11:27:08,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:27:08,804 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 67 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 326 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 [2023-12-21 11:27:08,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 326 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:27:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438752 states. [2023-12-21 11:27:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438752 to 437986. [2023-12-21 11:27:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437986 states, 437985 states have (on average 1.4883066771693094) internal successors, (651856), 437985 states have internal predecessors, (651856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:27:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437986 states to 437986 states and 651856 transitions. [2023-12-21 11:27:18,252 INFO L78 Accepts]: Start accepts. Automaton has 437986 states and 651856 transitions. Word has length 101 [2023-12-21 11:27:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:18,252 INFO L495 AbstractCegarLoop]: Abstraction has 437986 states and 651856 transitions. [2023-12-21 11:27:18,252 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) [2023-12-21 11:27:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 437986 states and 651856 transitions. [2023-12-21 11:27:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:27:18,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:18,264 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] [2023-12-21 11:27:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:27:18,265 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:18,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1895335102, now seen corresponding path program 1 times [2023-12-21 11:27:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:18,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576474751] [2023-12-21 11:27:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 11:27:18,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:18,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576474751] [2023-12-21 11:27:18,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576474751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:27:18,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:27:18,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:27:18,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652581215] [2023-12-21 11:27:18,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:27:18,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:27:18,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:18,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:27:18,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:27:18,312 INFO L87 Difference]: Start difference. First operand 437986 states and 651856 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:27:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:28,440 INFO L93 Difference]: Finished difference Result 1308786 states and 1945875 transitions. [2023-12-21 11:27:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:27:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 101 [2023-12-21 11:27:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:31,431 INFO L225 Difference]: With dead ends: 1308786 [2023-12-21 11:27:31,432 INFO L226 Difference]: Without dead ends: 871540 [2023-12-21 11:27:31,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:27:31,913 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 129 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 429 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 [2023-12-21 11:27:31,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 429 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:27:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871540 states. [2023-12-21 11:27:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871540 to 871538. [2023-12-21 11:27:48,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871538 states, 871537 states have (on average 1.4733981460339607) internal successors, (1284121), 871537 states have internal predecessors, (1284121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:27:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871538 states to 871538 states and 1284121 transitions. [2023-12-21 11:27:51,683 INFO L78 Accepts]: Start accepts. Automaton has 871538 states and 1284121 transitions. Word has length 101 [2023-12-21 11:27:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:51,683 INFO L495 AbstractCegarLoop]: Abstraction has 871538 states and 1284121 transitions. [2023-12-21 11:27:51,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:27:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 871538 states and 1284121 transitions. [2023-12-21 11:27:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:27:51,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:51,724 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] [2023-12-21 11:27:51,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:27:51,725 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:51,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash -977241410, now seen corresponding path program 1 times [2023-12-21 11:27:51,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:51,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991006800] [2023-12-21 11:27:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:27:51,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:51,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991006800] [2023-12-21 11:27:51,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991006800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:27:51,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:27:51,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:27:51,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186863082] [2023-12-21 11:27:51,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:27:51,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:27:51,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:27:51,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:27:51,845 INFO L87 Difference]: Start difference. First operand 871538 states and 1284121 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)