/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 02:27:52,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 02:27:52,350 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 02:27:52,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 02:27:52,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 02:27:52,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 02:27:52,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 02:27:52,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 02:27:52,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 02:27:52,391 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 02:27:52,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 02:27:52,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 02:27:52,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 02:27:52,394 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 02:27:52,394 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 02:27:52,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 02:27:52,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 02:27:52,395 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 02:27:52,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 02:27:52,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 02:27:52,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 02:27:52,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 02:27:52,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 02:27:52,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 02:27:52,396 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 02:27:52,397 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 02:27:52,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 02:27:52,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 02:27:52,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 02:27:52,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 02:27:52,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 02:27:52,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 02:27:52,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:27:52,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 02:27:52,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 02:27:52,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 02:27:52,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 02:27:52,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 02:27:52,400 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 02:27:52,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 02:27:52,401 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 02:27:52,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 02:27:52,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 02:27:52,401 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 02:27:52,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 02:27:52,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 02:27:52,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 02:27:52,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 02:27:52,647 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 02:27:52,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 02:27:53,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 02:27:54,094 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 02:27:54,095 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 02:27:54,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a8e695a/f35ac37fafd648c3bb51294922e081d5/FLAG031929bb7 [2023-12-20 02:27:54,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a8e695a/f35ac37fafd648c3bb51294922e081d5 [2023-12-20 02:27:54,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 02:27:54,123 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 02:27:54,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 02:27:54,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 02:27:54,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 02:27:54,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4725caef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54, skipping insertion in model container [2023-12-20 02:27:54,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,185 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 02:27:54,361 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-12-20 02:27:54,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:27:54,419 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 02:27:54,471 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-12-20 02:27:54,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:27:54,514 INFO L206 MainTranslator]: Completed translation [2023-12-20 02:27:54,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54 WrapperNode [2023-12-20 02:27:54,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 02:27:54,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 02:27:54,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 02:27:54,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 02:27:54,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,573 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 624 [2023-12-20 02:27:54,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 02:27:54,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 02:27:54,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 02:27:54,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 02:27:54,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,609 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 02:27:54,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 02:27:54,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 02:27:54,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 02:27:54,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 02:27:54,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (1/1) ... [2023-12-20 02:27:54,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:27:54,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:27:54,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 02:27:54,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 02:27:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 02:27:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 02:27:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 02:27:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 02:27:54,854 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 02:27:54,855 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 02:27:55,417 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 02:27:55,462 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 02:27:55,462 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 02:27:55,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:27:55 BoogieIcfgContainer [2023-12-20 02:27:55,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 02:27:55,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 02:27:55,465 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 02:27:55,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 02:27:55,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:27:54" (1/3) ... [2023-12-20 02:27:55,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0044ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:27:55, skipping insertion in model container [2023-12-20 02:27:55,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:27:54" (2/3) ... [2023-12-20 02:27:55,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0044ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:27:55, skipping insertion in model container [2023-12-20 02:27:55,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:27:55" (3/3) ... [2023-12-20 02:27:55,470 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 02:27:55,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 02:27:55,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 02:27:55,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 02:27:55,527 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;@6eb842cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 02:27:55,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 02:27:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 02:27:55,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:55,540 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] [2023-12-20 02:27:55,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:55,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:55,545 INFO L85 PathProgramCache]: Analyzing trace with hash -257930743, now seen corresponding path program 1 times [2023-12-20 02:27:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708158626] [2023-12-20 02:27:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:55,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:55,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708158626] [2023-12-20 02:27:55,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708158626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:55,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:55,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:27:55,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620652847] [2023-12-20 02:27:55,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:55,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:27:55,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:27:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:56,015 INFO L87 Difference]: Start difference. First operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:56,082 INFO L93 Difference]: Finished difference Result 284 states and 487 transitions. [2023-12-20 02:27:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:27:56,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-20 02:27:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:56,093 INFO L225 Difference]: With dead ends: 284 [2023-12-20 02:27:56,093 INFO L226 Difference]: Without dead ends: 200 [2023-12-20 02:27:56,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:56,098 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 130 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:56,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-20 02:27:56,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2023-12-20 02:27:56,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.583756345177665) internal successors, (312), 197 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 312 transitions. [2023-12-20 02:27:56,139 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 312 transitions. Word has length 56 [2023-12-20 02:27:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:56,139 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 312 transitions. [2023-12-20 02:27:56,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 312 transitions. [2023-12-20 02:27:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 02:27:56,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:56,143 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] [2023-12-20 02:27:56,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 02:27:56,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:56,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1691975926, now seen corresponding path program 1 times [2023-12-20 02:27:56,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:56,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540610062] [2023-12-20 02:27:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540610062] [2023-12-20 02:27:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540610062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:27:56,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46261275] [2023-12-20 02:27:56,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:56,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:27:56,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:27:56,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:56,272 INFO L87 Difference]: Start difference. First operand 198 states and 312 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:56,317 INFO L93 Difference]: Finished difference Result 474 states and 768 transitions. [2023-12-20 02:27:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:27:56,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-12-20 02:27:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:56,325 INFO L225 Difference]: With dead ends: 474 [2023-12-20 02:27:56,326 INFO L226 Difference]: Without dead ends: 329 [2023-12-20 02:27:56,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:56,328 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 110 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:56,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 440 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-20 02:27:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2023-12-20 02:27:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.607361963190184) internal successors, (524), 326 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 524 transitions. [2023-12-20 02:27:56,356 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 524 transitions. Word has length 58 [2023-12-20 02:27:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:56,361 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 524 transitions. [2023-12-20 02:27:56,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 524 transitions. [2023-12-20 02:27:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 02:27:56,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:56,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:56,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 02:27:56,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:56,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash -62203140, now seen corresponding path program 1 times [2023-12-20 02:27:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:56,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386195469] [2023-12-20 02:27:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:56,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:56,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386195469] [2023-12-20 02:27:56,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386195469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:56,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:56,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:27:56,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934899686] [2023-12-20 02:27:56,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:56,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:27:56,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:27:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:56,494 INFO L87 Difference]: Start difference. First operand 327 states and 524 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:56,528 INFO L93 Difference]: Finished difference Result 602 states and 980 transitions. [2023-12-20 02:27:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:27:56,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 02:27:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:56,532 INFO L225 Difference]: With dead ends: 602 [2023-12-20 02:27:56,533 INFO L226 Difference]: Without dead ends: 457 [2023-12-20 02:27:56,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:56,535 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 111 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:56,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 442 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-20 02:27:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2023-12-20 02:27:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.6167400881057268) internal successors, (734), 454 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 734 transitions. [2023-12-20 02:27:56,558 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 734 transitions. Word has length 60 [2023-12-20 02:27:56,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:56,559 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 734 transitions. [2023-12-20 02:27:56,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,559 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 734 transitions. [2023-12-20 02:27:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 02:27:56,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:56,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:56,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 02:27:56,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:56,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1225726807, now seen corresponding path program 1 times [2023-12-20 02:27:56,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:56,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201233309] [2023-12-20 02:27:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:56,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:56,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201233309] [2023-12-20 02:27:56,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201233309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:56,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:56,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:27:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102697099] [2023-12-20 02:27:56,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:56,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:27:56,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:27:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:56,707 INFO L87 Difference]: Start difference. First operand 455 states and 734 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:56,727 INFO L93 Difference]: Finished difference Result 1171 states and 1910 transitions. [2023-12-20 02:27:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:27:56,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 02:27:56,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:56,730 INFO L225 Difference]: With dead ends: 1171 [2023-12-20 02:27:56,730 INFO L226 Difference]: Without dead ends: 792 [2023-12-20 02:27:56,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:56,742 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:56,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 378 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-12-20 02:27:56,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 790. [2023-12-20 02:27:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.6172370088719898) internal successors, (1276), 789 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1276 transitions. [2023-12-20 02:27:56,766 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1276 transitions. Word has length 60 [2023-12-20 02:27:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:56,767 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1276 transitions. [2023-12-20 02:27:56,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1276 transitions. [2023-12-20 02:27:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 02:27:56,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:56,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:56,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 02:27:56,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:56,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash -792993450, now seen corresponding path program 1 times [2023-12-20 02:27:56,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:56,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305563406] [2023-12-20 02:27:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:56,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:56,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305563406] [2023-12-20 02:27:56,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305563406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:56,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:56,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:27:56,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961499068] [2023-12-20 02:27:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:56,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:27:56,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:56,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:27:56,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:27:56,910 INFO L87 Difference]: Start difference. First operand 790 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:57,054 INFO L93 Difference]: Finished difference Result 3567 states and 5887 transitions. [2023-12-20 02:27:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 02:27:57,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 02:27:57,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:57,065 INFO L225 Difference]: With dead ends: 3567 [2023-12-20 02:27:57,065 INFO L226 Difference]: Without dead ends: 2853 [2023-12-20 02:27:57,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 02:27:57,067 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 881 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:57,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1258 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:27:57,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2023-12-20 02:27:57,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 1431. [2023-12-20 02:27:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 1.6237762237762239) internal successors, (2322), 1430 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2322 transitions. [2023-12-20 02:27:57,104 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2322 transitions. Word has length 62 [2023-12-20 02:27:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:57,106 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 2322 transitions. [2023-12-20 02:27:57,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2322 transitions. [2023-12-20 02:27:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 02:27:57,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:57,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:57,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 02:27:57,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:57,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1124502626, now seen corresponding path program 1 times [2023-12-20 02:27:57,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:57,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224284996] [2023-12-20 02:27:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:57,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:57,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:57,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224284996] [2023-12-20 02:27:57,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224284996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:57,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:57,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:27:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581308197] [2023-12-20 02:27:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:27:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:27:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:27:57,200 INFO L87 Difference]: Start difference. First operand 1431 states and 2322 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:57,271 INFO L93 Difference]: Finished difference Result 4198 states and 6909 transitions. [2023-12-20 02:27:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:27:57,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 02:27:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:57,280 INFO L225 Difference]: With dead ends: 4198 [2023-12-20 02:27:57,281 INFO L226 Difference]: Without dead ends: 2845 [2023-12-20 02:27:57,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:27:57,284 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 379 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:57,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 672 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:57,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2023-12-20 02:27:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2126. [2023-12-20 02:27:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 1.6305882352941177) internal successors, (3465), 2125 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3465 transitions. [2023-12-20 02:27:57,363 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3465 transitions. Word has length 63 [2023-12-20 02:27:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:57,364 INFO L495 AbstractCegarLoop]: Abstraction has 2126 states and 3465 transitions. [2023-12-20 02:27:57,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3465 transitions. [2023-12-20 02:27:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 02:27:57,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:57,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:57,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 02:27:57,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:57,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash -808788401, now seen corresponding path program 1 times [2023-12-20 02:27:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:57,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444869701] [2023-12-20 02:27:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:57,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:57,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:57,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444869701] [2023-12-20 02:27:57,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444869701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:57,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:57,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:27:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595209050] [2023-12-20 02:27:57,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:57,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:27:57,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:57,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:27:57,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:57,413 INFO L87 Difference]: Start difference. First operand 2126 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:57,437 INFO L93 Difference]: Finished difference Result 4120 states and 6751 transitions. [2023-12-20 02:27:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:27:57,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 02:27:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:57,446 INFO L225 Difference]: With dead ends: 4120 [2023-12-20 02:27:57,446 INFO L226 Difference]: Without dead ends: 2978 [2023-12-20 02:27:57,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:57,448 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 106 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:57,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 424 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2023-12-20 02:27:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2976. [2023-12-20 02:27:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 1.6258823529411766) internal successors, (4837), 2975 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4837 transitions. [2023-12-20 02:27:57,497 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4837 transitions. Word has length 63 [2023-12-20 02:27:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:57,497 INFO L495 AbstractCegarLoop]: Abstraction has 2976 states and 4837 transitions. [2023-12-20 02:27:57,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4837 transitions. [2023-12-20 02:27:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 02:27:57,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:57,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:57,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 02:27:57,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:57,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1879340937, now seen corresponding path program 1 times [2023-12-20 02:27:57,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:57,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390252194] [2023-12-20 02:27:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:57,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390252194] [2023-12-20 02:27:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390252194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:57,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:27:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177003450] [2023-12-20 02:27:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:57,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:27:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:27:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:57,548 INFO L87 Difference]: Start difference. First operand 2976 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:57,581 INFO L93 Difference]: Finished difference Result 6398 states and 10549 transitions. [2023-12-20 02:27:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:27:57,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 02:27:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:57,594 INFO L225 Difference]: With dead ends: 6398 [2023-12-20 02:27:57,594 INFO L226 Difference]: Without dead ends: 4312 [2023-12-20 02:27:57,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:27:57,598 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:57,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 465 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2023-12-20 02:27:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4310. [2023-12-20 02:27:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4309 states have (on average 1.633325597586447) internal successors, (7038), 4309 states have internal predecessors, (7038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 7038 transitions. [2023-12-20 02:27:57,670 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 7038 transitions. Word has length 63 [2023-12-20 02:27:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:57,671 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 7038 transitions. [2023-12-20 02:27:57,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 7038 transitions. [2023-12-20 02:27:57,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 02:27:57,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:57,672 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] [2023-12-20 02:27:57,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 02:27:57,673 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:57,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:57,673 INFO L85 PathProgramCache]: Analyzing trace with hash 441896861, now seen corresponding path program 1 times [2023-12-20 02:27:57,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:57,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885870116] [2023-12-20 02:27:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:57,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:57,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:57,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885870116] [2023-12-20 02:27:57,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885870116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:57,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:57,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:27:57,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576328825] [2023-12-20 02:27:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:57,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:27:57,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:57,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:27:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:27:57,752 INFO L87 Difference]: Start difference. First operand 4310 states and 7038 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2023-12-20 02:27:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:57,890 INFO L93 Difference]: Finished difference Result 13701 states and 22481 transitions. [2023-12-20 02:27:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:27:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2023-12-20 02:27:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:57,933 INFO L225 Difference]: With dead ends: 13701 [2023-12-20 02:27:57,933 INFO L226 Difference]: Without dead ends: 9472 [2023-12-20 02:27:57,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:27:57,944 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 377 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:57,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 679 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:27:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9472 states. [2023-12-20 02:27:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9472 to 6862. [2023-12-20 02:27:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6862 states, 6861 states have (on average 1.6265850459116746) internal successors, (11160), 6861 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6862 states to 6862 states and 11160 transitions. [2023-12-20 02:27:58,087 INFO L78 Accepts]: Start accepts. Automaton has 6862 states and 11160 transitions. Word has length 64 [2023-12-20 02:27:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:58,087 INFO L495 AbstractCegarLoop]: Abstraction has 6862 states and 11160 transitions. [2023-12-20 02:27:58,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2023-12-20 02:27:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6862 states and 11160 transitions. [2023-12-20 02:27:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 02:27:58,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:58,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:58,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 02:27:58,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:58,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:58,089 INFO L85 PathProgramCache]: Analyzing trace with hash 760512649, now seen corresponding path program 1 times [2023-12-20 02:27:58,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:58,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679983632] [2023-12-20 02:27:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:58,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:58,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:58,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679983632] [2023-12-20 02:27:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679983632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:27:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87897249] [2023-12-20 02:27:58,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:58,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:27:58,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:58,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:27:58,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:27:58,160 INFO L87 Difference]: Start difference. First operand 6862 states and 11160 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:58,264 INFO L93 Difference]: Finished difference Result 21433 states and 34993 transitions. [2023-12-20 02:27:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:27:58,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 02:27:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:58,288 INFO L225 Difference]: With dead ends: 21433 [2023-12-20 02:27:58,288 INFO L226 Difference]: Without dead ends: 14652 [2023-12-20 02:27:58,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:27:58,300 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 375 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:58,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 661 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:58,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2023-12-20 02:27:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 10714. [2023-12-20 02:27:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10713 states have (on average 1.6191542985158218) internal successors, (17346), 10713 states have internal predecessors, (17346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17346 transitions. [2023-12-20 02:27:58,508 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 17346 transitions. Word has length 65 [2023-12-20 02:27:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:58,508 INFO L495 AbstractCegarLoop]: Abstraction has 10714 states and 17346 transitions. [2023-12-20 02:27:58,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 17346 transitions. [2023-12-20 02:27:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 02:27:58,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:58,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:58,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 02:27:58,509 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:58,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:58,510 INFO L85 PathProgramCache]: Analyzing trace with hash -809096294, now seen corresponding path program 1 times [2023-12-20 02:27:58,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:58,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590141283] [2023-12-20 02:27:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:58,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:58,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590141283] [2023-12-20 02:27:58,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590141283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:58,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:58,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:27:58,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587272265] [2023-12-20 02:27:58,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:58,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:27:58,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:58,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:27:58,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:27:58,646 INFO L87 Difference]: Start difference. First operand 10714 states and 17346 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:58,763 INFO L93 Difference]: Finished difference Result 21349 states and 34582 transitions. [2023-12-20 02:27:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:27:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-20 02:27:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:58,781 INFO L225 Difference]: With dead ends: 21349 [2023-12-20 02:27:58,782 INFO L226 Difference]: Without dead ends: 10716 [2023-12-20 02:27:58,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:27:58,795 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 209 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:58,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 550 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2023-12-20 02:27:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10714. [2023-12-20 02:27:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10713 states have (on average 1.6074862316811351) internal successors, (17221), 10713 states have internal predecessors, (17221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17221 transitions. [2023-12-20 02:27:59,025 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 17221 transitions. Word has length 67 [2023-12-20 02:27:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:59,026 INFO L495 AbstractCegarLoop]: Abstraction has 10714 states and 17221 transitions. [2023-12-20 02:27:59,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 17221 transitions. [2023-12-20 02:27:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 02:27:59,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:59,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:59,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 02:27:59,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:59,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:59,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1815177743, now seen corresponding path program 1 times [2023-12-20 02:27:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:59,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737179116] [2023-12-20 02:27:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:27:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:27:59,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:27:59,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737179116] [2023-12-20 02:27:59,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737179116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:27:59,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:27:59,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:27:59,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844731365] [2023-12-20 02:27:59,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:27:59,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:27:59,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:27:59,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:27:59,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:27:59,178 INFO L87 Difference]: Start difference. First operand 10714 states and 17221 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:27:59,396 INFO L93 Difference]: Finished difference Result 30659 states and 49436 transitions. [2023-12-20 02:27:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:27:59,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-20 02:27:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:27:59,437 INFO L225 Difference]: With dead ends: 30659 [2023-12-20 02:27:59,437 INFO L226 Difference]: Without dead ends: 20026 [2023-12-20 02:27:59,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:27:59,447 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 103 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:27:59,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 739 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:27:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2023-12-20 02:27:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 20024. [2023-12-20 02:27:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20024 states, 20023 states have (on average 1.5949657893422564) internal successors, (31936), 20023 states have internal predecessors, (31936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20024 states to 20024 states and 31936 transitions. [2023-12-20 02:27:59,797 INFO L78 Accepts]: Start accepts. Automaton has 20024 states and 31936 transitions. Word has length 70 [2023-12-20 02:27:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:27:59,797 INFO L495 AbstractCegarLoop]: Abstraction has 20024 states and 31936 transitions. [2023-12-20 02:27:59,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:27:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 20024 states and 31936 transitions. [2023-12-20 02:27:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 02:27:59,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:27:59,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:27:59,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 02:27:59,799 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:27:59,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:27:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash 434025879, now seen corresponding path program 1 times [2023-12-20 02:27:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:27:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81572758] [2023-12-20 02:27:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:27:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:27:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:28:00,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:00,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81572758] [2023-12-20 02:28:00,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81572758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:00,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:00,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:28:00,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931637056] [2023-12-20 02:28:00,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:00,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:28:00,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:00,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:28:00,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:28:00,045 INFO L87 Difference]: Start difference. First operand 20024 states and 31936 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) [2023-12-20 02:28:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:00,292 INFO L93 Difference]: Finished difference Result 38402 states and 60949 transitions. [2023-12-20 02:28:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:28:00,308 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 [2023-12-20 02:28:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:00,383 INFO L225 Difference]: With dead ends: 38402 [2023-12-20 02:28:00,383 INFO L226 Difference]: Without dead ends: 38400 [2023-12-20 02:28:00,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:28:00,388 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 234 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:00,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 937 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38400 states. [2023-12-20 02:28:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38400 to 20748. [2023-12-20 02:28:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20748 states, 20747 states have (on average 1.5737697016436112) internal successors, (32651), 20747 states have internal predecessors, (32651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20748 states to 20748 states and 32651 transitions. [2023-12-20 02:28:00,757 INFO L78 Accepts]: Start accepts. Automaton has 20748 states and 32651 transitions. Word has length 71 [2023-12-20 02:28:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:00,758 INFO L495 AbstractCegarLoop]: Abstraction has 20748 states and 32651 transitions. [2023-12-20 02:28:00,758 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) [2023-12-20 02:28:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 20748 states and 32651 transitions. [2023-12-20 02:28:00,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 02:28:00,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:00,760 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] [2023-12-20 02:28:00,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 02:28:00,760 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:00,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:00,761 INFO L85 PathProgramCache]: Analyzing trace with hash 575576521, now seen corresponding path program 1 times [2023-12-20 02:28:00,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:00,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970748351] [2023-12-20 02:28:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:00,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 02:28:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970748351] [2023-12-20 02:28:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970748351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:00,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:00,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:28:00,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660533247] [2023-12-20 02:28:00,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:00,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:28:00,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:28:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:28:00,858 INFO L87 Difference]: Start difference. First operand 20748 states and 32651 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:01,192 INFO L93 Difference]: Finished difference Result 50556 states and 79853 transitions. [2023-12-20 02:28:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:28:01,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 02:28:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:01,277 INFO L225 Difference]: With dead ends: 50556 [2023-12-20 02:28:01,277 INFO L226 Difference]: Without dead ends: 40764 [2023-12-20 02:28:01,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:28:01,302 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 479 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:01,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 935 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:01,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40764 states. [2023-12-20 02:28:01,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 31834. [2023-12-20 02:28:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 1.5725504979109728) internal successors, (50059), 31833 states have internal predecessors, (50059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 50059 transitions. [2023-12-20 02:28:01,783 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 50059 transitions. Word has length 92 [2023-12-20 02:28:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:01,783 INFO L495 AbstractCegarLoop]: Abstraction has 31834 states and 50059 transitions. [2023-12-20 02:28:01,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 50059 transitions. [2023-12-20 02:28:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 02:28:01,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:01,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 02:28:01,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:01,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1946475532, now seen corresponding path program 1 times [2023-12-20 02:28:01,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:01,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788127977] [2023-12-20 02:28:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:01,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 02:28:02,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:02,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788127977] [2023-12-20 02:28:02,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788127977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:02,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:02,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:28:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117885466] [2023-12-20 02:28:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:02,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:28:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:28:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:28:02,034 INFO L87 Difference]: Start difference. First operand 31834 states and 50059 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:02,233 INFO L93 Difference]: Finished difference Result 54448 states and 86017 transitions. [2023-12-20 02:28:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:28:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 02:28:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:02,301 INFO L225 Difference]: With dead ends: 54448 [2023-12-20 02:28:02,301 INFO L226 Difference]: Without dead ends: 44656 [2023-12-20 02:28:02,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:28:02,328 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 476 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:02,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 941 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44656 states. [2023-12-20 02:28:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44656 to 43066. [2023-12-20 02:28:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43066 states, 43065 states have (on average 1.5734587251828631) internal successors, (67761), 43065 states have internal predecessors, (67761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43066 states to 43066 states and 67761 transitions. [2023-12-20 02:28:02,943 INFO L78 Accepts]: Start accepts. Automaton has 43066 states and 67761 transitions. Word has length 92 [2023-12-20 02:28:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:02,944 INFO L495 AbstractCegarLoop]: Abstraction has 43066 states and 67761 transitions. [2023-12-20 02:28:02,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 43066 states and 67761 transitions. [2023-12-20 02:28:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 02:28:02,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:02,949 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:02,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 02:28:02,950 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:02,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash -353100276, now seen corresponding path program 1 times [2023-12-20 02:28:02,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:02,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220436356] [2023-12-20 02:28:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:02,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 02:28:03,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:03,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220436356] [2023-12-20 02:28:03,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220436356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:03,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:03,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:28:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013404983] [2023-12-20 02:28:03,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:03,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:28:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:28:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:03,019 INFO L87 Difference]: Start difference. First operand 43066 states and 67761 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:03,362 INFO L93 Difference]: Finished difference Result 89604 states and 141688 transitions. [2023-12-20 02:28:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:28:03,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 92 [2023-12-20 02:28:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:03,643 INFO L225 Difference]: With dead ends: 89604 [2023-12-20 02:28:03,643 INFO L226 Difference]: Without dead ends: 79582 [2023-12-20 02:28:03,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:03,684 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 96 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:03,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 368 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:03,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79582 states. [2023-12-20 02:28:04,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79582 to 79465. [2023-12-20 02:28:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79465 states, 79464 states have (on average 1.577330615121313) internal successors, (125341), 79464 states have internal predecessors, (125341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79465 states to 79465 states and 125341 transitions. [2023-12-20 02:28:04,731 INFO L78 Accepts]: Start accepts. Automaton has 79465 states and 125341 transitions. Word has length 92 [2023-12-20 02:28:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:04,732 INFO L495 AbstractCegarLoop]: Abstraction has 79465 states and 125341 transitions. [2023-12-20 02:28:04,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 79465 states and 125341 transitions. [2023-12-20 02:28:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 02:28:04,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:04,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:04,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 02:28:04,735 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:04,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:04,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1332792260, now seen corresponding path program 1 times [2023-12-20 02:28:04,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:04,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358027303] [2023-12-20 02:28:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:28:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358027303] [2023-12-20 02:28:04,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358027303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:04,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:04,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:28:04,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932028996] [2023-12-20 02:28:04,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:04,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:28:04,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:04,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:28:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:04,841 INFO L87 Difference]: Start difference. First operand 79465 states and 125341 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) [2023-12-20 02:28:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:05,360 INFO L93 Difference]: Finished difference Result 152409 states and 240882 transitions. [2023-12-20 02:28:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:28:05,360 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 93 [2023-12-20 02:28:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:05,463 INFO L225 Difference]: With dead ends: 152409 [2023-12-20 02:28:05,463 INFO L226 Difference]: Without dead ends: 73025 [2023-12-20 02:28:05,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:05,519 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:05,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 431 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:05,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73025 states. [2023-12-20 02:28:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73025 to 73019. [2023-12-20 02:28:06,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73019 states, 73018 states have (on average 1.5737489386178751) internal successors, (114912), 73018 states have internal predecessors, (114912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73019 states to 73019 states and 114912 transitions. [2023-12-20 02:28:07,054 INFO L78 Accepts]: Start accepts. Automaton has 73019 states and 114912 transitions. Word has length 93 [2023-12-20 02:28:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:07,054 INFO L495 AbstractCegarLoop]: Abstraction has 73019 states and 114912 transitions. [2023-12-20 02:28:07,054 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) [2023-12-20 02:28:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 73019 states and 114912 transitions. [2023-12-20 02:28:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 02:28:07,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:07,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:07,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 02:28:07,097 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:07,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:07,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1155919050, now seen corresponding path program 1 times [2023-12-20 02:28:07,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:07,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012219300] [2023-12-20 02:28:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:07,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:28:07,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:07,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012219300] [2023-12-20 02:28:07,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012219300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:07,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:07,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:28:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144272644] [2023-12-20 02:28:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:28:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:28:07,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:07,191 INFO L87 Difference]: Start difference. First operand 73019 states and 114912 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) [2023-12-20 02:28:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:07,903 INFO L93 Difference]: Finished difference Result 214864 states and 338087 transitions. [2023-12-20 02:28:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:28:07,904 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 93 [2023-12-20 02:28:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:08,090 INFO L225 Difference]: With dead ends: 214864 [2023-12-20 02:28:08,091 INFO L226 Difference]: Without dead ends: 141928 [2023-12-20 02:28:08,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:08,136 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 153 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:08,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 488 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:08,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141928 states. [2023-12-20 02:28:09,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141928 to 141926. [2023-12-20 02:28:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141926 states, 141925 states have (on average 1.5621842522459046) internal successors, (221713), 141925 states have internal predecessors, (221713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141926 states to 141926 states and 221713 transitions. [2023-12-20 02:28:10,153 INFO L78 Accepts]: Start accepts. Automaton has 141926 states and 221713 transitions. Word has length 93 [2023-12-20 02:28:10,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:10,153 INFO L495 AbstractCegarLoop]: Abstraction has 141926 states and 221713 transitions. [2023-12-20 02:28:10,153 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) [2023-12-20 02:28:10,154 INFO L276 IsEmpty]: Start isEmpty. Operand 141926 states and 221713 transitions. [2023-12-20 02:28:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 02:28:10,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:10,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:10,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 02:28:10,157 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:10,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -336919691, now seen corresponding path program 1 times [2023-12-20 02:28:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018422187] [2023-12-20 02:28:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 02:28:10,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018422187] [2023-12-20 02:28:10,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018422187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:10,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:10,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:28:10,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779978412] [2023-12-20 02:28:10,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:10,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:28:10,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:10,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:28:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:28:10,449 INFO L87 Difference]: Start difference. First operand 141926 states and 221713 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:11,522 INFO L93 Difference]: Finished difference Result 335466 states and 527318 transitions. [2023-12-20 02:28:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:28:11,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 02:28:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:11,898 INFO L225 Difference]: With dead ends: 335466 [2023-12-20 02:28:11,899 INFO L226 Difference]: Without dead ends: 255276 [2023-12-20 02:28:12,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:28:12,261 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 405 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:12,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 536 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255276 states. [2023-12-20 02:28:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255276 to 220586. [2023-12-20 02:28:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220586 states, 220585 states have (on average 1.5658226987329147) internal successors, (345397), 220585 states have internal predecessors, (345397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220586 states to 220586 states and 345397 transitions. [2023-12-20 02:28:15,573 INFO L78 Accepts]: Start accepts. Automaton has 220586 states and 345397 transitions. Word has length 93 [2023-12-20 02:28:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:15,573 INFO L495 AbstractCegarLoop]: Abstraction has 220586 states and 345397 transitions. [2023-12-20 02:28:15,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 220586 states and 345397 transitions. [2023-12-20 02:28:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 02:28:15,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:15,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:15,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 02:28:15,577 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:15,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2036274214, now seen corresponding path program 1 times [2023-12-20 02:28:15,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:15,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105237009] [2023-12-20 02:28:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:15,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 02:28:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105237009] [2023-12-20 02:28:15,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105237009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:15,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:28:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137702833] [2023-12-20 02:28:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:15,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:28:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:28:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:28:15,661 INFO L87 Difference]: Start difference. First operand 220586 states and 345397 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:16,920 INFO L93 Difference]: Finished difference Result 367026 states and 576200 transitions. [2023-12-20 02:28:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:28:16,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 02:28:16,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:17,279 INFO L225 Difference]: With dead ends: 367026 [2023-12-20 02:28:17,279 INFO L226 Difference]: Without dead ends: 233414 [2023-12-20 02:28:17,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:28:17,359 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 212 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:17,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 634 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233414 states. [2023-12-20 02:28:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233414 to 145932. [2023-12-20 02:28:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145932 states, 145931 states have (on average 1.563225085828234) internal successors, (228123), 145931 states have internal predecessors, (228123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145932 states to 145932 states and 228123 transitions. [2023-12-20 02:28:19,919 INFO L78 Accepts]: Start accepts. Automaton has 145932 states and 228123 transitions. Word has length 93 [2023-12-20 02:28:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:19,919 INFO L495 AbstractCegarLoop]: Abstraction has 145932 states and 228123 transitions. [2023-12-20 02:28:19,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 145932 states and 228123 transitions. [2023-12-20 02:28:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 02:28:19,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:19,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:19,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 02:28:19,922 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:19,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:19,923 INFO L85 PathProgramCache]: Analyzing trace with hash -988052884, now seen corresponding path program 1 times [2023-12-20 02:28:19,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:19,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562645805] [2023-12-20 02:28:19,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:19,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:28:19,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:19,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562645805] [2023-12-20 02:28:19,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562645805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:19,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:19,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:28:19,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829340408] [2023-12-20 02:28:19,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:19,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:28:19,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:19,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:28:19,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:19,980 INFO L87 Difference]: Start difference. First operand 145932 states and 228123 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) [2023-12-20 02:28:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:21,776 INFO L93 Difference]: Finished difference Result 429144 states and 670651 transitions. [2023-12-20 02:28:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:28:21,776 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 93 [2023-12-20 02:28:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:22,262 INFO L225 Difference]: With dead ends: 429144 [2023-12-20 02:28:22,263 INFO L226 Difference]: Without dead ends: 283340 [2023-12-20 02:28:22,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:22,331 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 135 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:22,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 455 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:22,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283340 states. [2023-12-20 02:28:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283340 to 283338. [2023-12-20 02:28:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283338 states, 283337 states have (on average 1.5509375761019564) internal successors, (439438), 283337 states have internal predecessors, (439438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283338 states to 283338 states and 439438 transitions. [2023-12-20 02:28:26,341 INFO L78 Accepts]: Start accepts. Automaton has 283338 states and 439438 transitions. Word has length 93 [2023-12-20 02:28:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:26,341 INFO L495 AbstractCegarLoop]: Abstraction has 283338 states and 439438 transitions. [2023-12-20 02:28:26,341 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) [2023-12-20 02:28:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 283338 states and 439438 transitions. [2023-12-20 02:28:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 02:28:26,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:26,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:26,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 02:28:26,346 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:26,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2110042313, now seen corresponding path program 1 times [2023-12-20 02:28:26,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:26,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442725376] [2023-12-20 02:28:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:26,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 02:28:26,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:26,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442725376] [2023-12-20 02:28:26,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442725376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:26,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:26,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:28:26,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480662127] [2023-12-20 02:28:26,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:26,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:28:26,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:26,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:28:26,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:28:26,428 INFO L87 Difference]: Start difference. First operand 283338 states and 439438 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:28,447 INFO L93 Difference]: Finished difference Result 499760 states and 780113 transitions. [2023-12-20 02:28:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:28:28,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 02:28:28,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:29,551 INFO L225 Difference]: With dead ends: 499760 [2023-12-20 02:28:29,551 INFO L226 Difference]: Without dead ends: 392014 [2023-12-20 02:28:29,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:28:29,755 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 213 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:29,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 634 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392014 states. [2023-12-20 02:28:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392014 to 349690. [2023-12-20 02:28:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349690 states, 349689 states have (on average 1.550629273440114) internal successors, (542238), 349689 states have internal predecessors, (542238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349690 states to 349690 states and 542238 transitions. [2023-12-20 02:28:35,093 INFO L78 Accepts]: Start accepts. Automaton has 349690 states and 542238 transitions. Word has length 94 [2023-12-20 02:28:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:35,094 INFO L495 AbstractCegarLoop]: Abstraction has 349690 states and 542238 transitions. [2023-12-20 02:28:35,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 349690 states and 542238 transitions. [2023-12-20 02:28:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 02:28:35,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:35,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:35,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 02:28:35,116 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:35,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:35,117 INFO L85 PathProgramCache]: Analyzing trace with hash 877689107, now seen corresponding path program 1 times [2023-12-20 02:28:35,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:35,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128412290] [2023-12-20 02:28:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:35,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 02:28:35,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128412290] [2023-12-20 02:28:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128412290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:35,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:35,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:28:35,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860767599] [2023-12-20 02:28:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:35,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:28:35,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:35,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:28:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:35,171 INFO L87 Difference]: Start difference. First operand 349690 states and 542238 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) [2023-12-20 02:28:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:37,677 INFO L93 Difference]: Finished difference Result 761966 states and 1185520 transitions. [2023-12-20 02:28:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:28:37,678 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 94 [2023-12-20 02:28:37,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:39,118 INFO L225 Difference]: With dead ends: 761966 [2023-12-20 02:28:39,119 INFO L226 Difference]: Without dead ends: 609700 [2023-12-20 02:28:39,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:39,254 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 91 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:39,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 372 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:28:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609700 states. [2023-12-20 02:28:45,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609700 to 608066. [2023-12-20 02:28:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608066 states, 608065 states have (on average 1.5502125595125522) internal successors, (942630), 608065 states have internal predecessors, (942630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608066 states to 608066 states and 942630 transitions. [2023-12-20 02:28:48,319 INFO L78 Accepts]: Start accepts. Automaton has 608066 states and 942630 transitions. Word has length 94 [2023-12-20 02:28:48,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:28:48,319 INFO L495 AbstractCegarLoop]: Abstraction has 608066 states and 942630 transitions. [2023-12-20 02:28:48,319 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) [2023-12-20 02:28:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 608066 states and 942630 transitions. [2023-12-20 02:28:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 02:28:48,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:28:48,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:28:48,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 02:28:48,323 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:28:48,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:28:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash 565946443, now seen corresponding path program 1 times [2023-12-20 02:28:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:28:48,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063630321] [2023-12-20 02:28:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:28:48,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:28:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:28:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:28:48,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:28:48,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063630321] [2023-12-20 02:28:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063630321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:28:48,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:28:48,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:28:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445008009] [2023-12-20 02:28:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:28:48,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:28:48,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:28:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:28:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:48,374 INFO L87 Difference]: Start difference. First operand 608066 states and 942630 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:28:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:28:55,621 INFO L93 Difference]: Finished difference Result 1789174 states and 2772386 transitions. [2023-12-20 02:28:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:28:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 02:28:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:28:59,290 INFO L225 Difference]: With dead ends: 1789174 [2023-12-20 02:28:59,290 INFO L226 Difference]: Without dead ends: 1181392 [2023-12-20 02:28:59,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:28:59,673 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 163 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:28:59,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 510 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:29:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181392 states. [2023-12-20 02:29:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181392 to 1181390. [2023-12-20 02:29:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181390 states, 1181389 states have (on average 1.5379388160885195) internal successors, (1816904), 1181389 states have internal predecessors, (1816904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:29:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181390 states to 1181390 states and 1816904 transitions. [2023-12-20 02:29:21,630 INFO L78 Accepts]: Start accepts. Automaton has 1181390 states and 1816904 transitions. Word has length 95 [2023-12-20 02:29:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:29:21,630 INFO L495 AbstractCegarLoop]: Abstraction has 1181390 states and 1816904 transitions. [2023-12-20 02:29:21,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:29:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1181390 states and 1816904 transitions. [2023-12-20 02:29:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 02:29:21,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:29:21,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:29:21,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 02:29:21,641 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:29:21,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:29:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash 739697237, now seen corresponding path program 1 times [2023-12-20 02:29:21,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:29:21,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483753842] [2023-12-20 02:29:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:29:21,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:29:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:29:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 02:29:21,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:29:21,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483753842] [2023-12-20 02:29:21,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483753842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:29:21,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:29:21,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:29:21,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094159873] [2023-12-20 02:29:21,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:29:21,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:29:21,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:29:21,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:29:21,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:29:21,733 INFO L87 Difference]: Start difference. First operand 1181390 states and 1816904 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)