/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/eca-rers2012/Problem13_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 03:50:52,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 03:50:52,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 03:50:52,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 03:50:52,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 03:50:52,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 03:50:52,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 03:50:52,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 03:50:52,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 03:50:52,529 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 03:50:52,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 03:50:52,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 03:50:52,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 03:50:52,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 03:50:52,532 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 03:50:52,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 03:50:52,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 03:50:52,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 03:50:52,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 03:50:52,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 03:50:52,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 03:50:52,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 03:50:52,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 03:50:52,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 03:50:52,535 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 03:50:52,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 03:50:52,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 03:50:52,535 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 03:50:52,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 03:50:52,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 03:50:52,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 03:50:52,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 03:50:52,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:50:52,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 03:50:52,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 03:50:52,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 03:50:52,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 03:50:52,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 03:50:52,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 03:50:52,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 03:50:52,539 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 03:50:52,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 03:50:52,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 03:50:52,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 03:50:52,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 03:50:52,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 03:50:52,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 03:50:52,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 03:50:52,768 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 03:50:52,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2023-12-19 03:50:53,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 03:50:54,409 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 03:50:54,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2023-12-19 03:50:54,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6920ce44/25bf1988139e4461824ca970e4ad648b/FLAG092118c0d [2023-12-19 03:50:54,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6920ce44/25bf1988139e4461824ca970e4ad648b [2023-12-19 03:50:54,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 03:50:54,466 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 03:50:54,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 03:50:54,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 03:50:54,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 03:50:54,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:50:54" (1/1) ... [2023-12-19 03:50:54,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98b2175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:54, skipping insertion in model container [2023-12-19 03:50:54,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:50:54" (1/1) ... [2023-12-19 03:50:54,604 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 03:50:54,900 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00.c[5434,5447] [2023-12-19 03:50:55,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:50:55,830 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 03:50:55,850 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00.c[5434,5447] [2023-12-19 03:50:56,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:50:56,337 INFO L206 MainTranslator]: Completed translation [2023-12-19 03:50:56,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56 WrapperNode [2023-12-19 03:50:56,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 03:50:56,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 03:50:56,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 03:50:56,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 03:50:56,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:56,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,011 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 03:50:57,012 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 03:50:57,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 03:50:57,013 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 03:50:57,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 03:50:57,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,172 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,318 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]. [2023-12-19 03:50:57,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 03:50:57,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 03:50:57,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 03:50:57,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 03:50:57,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (1/1) ... [2023-12-19 03:50:57,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:50:57,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:50:57,717 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) [2023-12-19 03:50:57,721 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 [2023-12-19 03:50:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 03:50:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 03:50:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 03:50:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 03:50:57,852 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 03:50:57,855 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 03:51:02,599 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 03:51:02,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 03:51:02,668 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 03:51:02,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:51:02 BoogieIcfgContainer [2023-12-19 03:51:02,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 03:51:02,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 03:51:02,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 03:51:02,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 03:51:02,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:50:54" (1/3) ... [2023-12-19 03:51:02,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b24f7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:51:02, skipping insertion in model container [2023-12-19 03:51:02,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:50:56" (2/3) ... [2023-12-19 03:51:02,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b24f7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:51:02, skipping insertion in model container [2023-12-19 03:51:02,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:51:02" (3/3) ... [2023-12-19 03:51:02,676 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label00.c [2023-12-19 03:51:02,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 03:51:02,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 03:51:02,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 03:51:02,757 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;@4a9415bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 03:51:02,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 03:51:02,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-19 03:51:02,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:02,771 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] [2023-12-19 03:51:02,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:02,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:02,777 INFO L85 PathProgramCache]: Analyzing trace with hash -157140578, now seen corresponding path program 1 times [2023-12-19 03:51:02,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:02,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82567994] [2023-12-19 03:51:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:02,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:02,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82567994] [2023-12-19 03:51:02,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82567994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:02,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:02,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153312671] [2023-12-19 03:51:02,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:02,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 03:51:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 03:51:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:51:02,958 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:03,062 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 03:51:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 03:51:03,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-19 03:51:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:03,094 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 03:51:03,094 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 03:51:03,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:51:03,106 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:03,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 03:51:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 03:51:03,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 03:51:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 03:51:03,186 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 36 [2023-12-19 03:51:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:03,187 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 03:51:03,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 03:51:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-19 03:51:03,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:03,188 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] [2023-12-19 03:51:03,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 03:51:03,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:03,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:03,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1987002944, now seen corresponding path program 1 times [2023-12-19 03:51:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:03,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674543732] [2023-12-19 03:51:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:03,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:03,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674543732] [2023-12-19 03:51:03,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674543732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:03,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:03,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:03,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243421250] [2023-12-19 03:51:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:03,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:03,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:03,343 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:07,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:07,455 INFO L93 Difference]: Finished difference Result 2931 states and 5350 transitions. [2023-12-19 03:51:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:07,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-19 03:51:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:07,465 INFO L225 Difference]: With dead ends: 2931 [2023-12-19 03:51:07,466 INFO L226 Difference]: Without dead ends: 1898 [2023-12-19 03:51:07,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:07,469 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 978 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:07,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 594 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 03:51:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-12-19 03:51:07,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2023-12-19 03:51:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.73784355179704) internal successors, (3288), 1892 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2023-12-19 03:51:07,525 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 36 [2023-12-19 03:51:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:07,525 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2023-12-19 03:51:07,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:07,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2023-12-19 03:51:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 03:51:07,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:07,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:07,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 03:51:07,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:07,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash -836614165, now seen corresponding path program 1 times [2023-12-19 03:51:07,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127238258] [2023-12-19 03:51:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:07,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127238258] [2023-12-19 03:51:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127238258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:07,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:07,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051740047] [2023-12-19 03:51:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:07,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:07,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:07,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:07,813 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:11,452 INFO L93 Difference]: Finished difference Result 5383 states and 9440 transitions. [2023-12-19 03:51:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:11,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-19 03:51:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:11,467 INFO L225 Difference]: With dead ends: 5383 [2023-12-19 03:51:11,467 INFO L226 Difference]: Without dead ends: 3491 [2023-12-19 03:51:11,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:11,471 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:11,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1011 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 03:51:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-12-19 03:51:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3490. [2023-12-19 03:51:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 1.5385497277156779) internal successors, (5368), 3489 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5368 transitions. [2023-12-19 03:51:11,543 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5368 transitions. Word has length 101 [2023-12-19 03:51:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:11,544 INFO L495 AbstractCegarLoop]: Abstraction has 3490 states and 5368 transitions. [2023-12-19 03:51:11,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5368 transitions. [2023-12-19 03:51:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 03:51:11,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:11,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:11,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 03:51:11,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:11,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:11,550 INFO L85 PathProgramCache]: Analyzing trace with hash 302907344, now seen corresponding path program 1 times [2023-12-19 03:51:11,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:11,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989130825] [2023-12-19 03:51:11,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:11,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:11,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:11,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989130825] [2023-12-19 03:51:11,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989130825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:11,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:11,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:11,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387228906] [2023-12-19 03:51:11,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:11,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:11,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:11,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:11,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:11,722 INFO L87 Difference]: Start difference. First operand 3490 states and 5368 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:15,167 INFO L93 Difference]: Finished difference Result 10168 states and 15699 transitions. [2023-12-19 03:51:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-19 03:51:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:15,194 INFO L225 Difference]: With dead ends: 10168 [2023-12-19 03:51:15,194 INFO L226 Difference]: Without dead ends: 6679 [2023-12-19 03:51:15,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:15,204 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:15,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 845 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 03:51:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2023-12-19 03:51:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6668. [2023-12-19 03:51:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 1.3752812359382032) internal successors, (9169), 6667 states have internal predecessors, (9169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9169 transitions. [2023-12-19 03:51:15,357 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9169 transitions. Word has length 103 [2023-12-19 03:51:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:15,357 INFO L495 AbstractCegarLoop]: Abstraction has 6668 states and 9169 transitions. [2023-12-19 03:51:15,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9169 transitions. [2023-12-19 03:51:15,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 03:51:15,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:15,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:15,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 03:51:15,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:15,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:15,362 INFO L85 PathProgramCache]: Analyzing trace with hash 278854494, now seen corresponding path program 1 times [2023-12-19 03:51:15,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:15,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509645234] [2023-12-19 03:51:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:15,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:15,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:15,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509645234] [2023-12-19 03:51:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509645234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:15,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:15,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:15,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107944118] [2023-12-19 03:51:15,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:15,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:15,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:15,886 INFO L87 Difference]: Start difference. First operand 6668 states and 9169 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:18,530 INFO L93 Difference]: Finished difference Result 14122 states and 19184 transitions. [2023-12-19 03:51:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-19 03:51:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:18,550 INFO L225 Difference]: With dead ends: 14122 [2023-12-19 03:51:18,550 INFO L226 Difference]: Without dead ends: 7455 [2023-12-19 03:51:18,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:18,561 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:18,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1213 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:51:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2023-12-19 03:51:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7455. [2023-12-19 03:51:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3363294875234772) internal successors, (9961), 7454 states have internal predecessors, (9961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9961 transitions. [2023-12-19 03:51:18,709 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9961 transitions. Word has length 147 [2023-12-19 03:51:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:18,710 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 9961 transitions. [2023-12-19 03:51:18,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9961 transitions. [2023-12-19 03:51:18,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 03:51:18,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:18,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:18,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 03:51:18,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:18,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash -308762168, now seen corresponding path program 1 times [2023-12-19 03:51:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397182616] [2023-12-19 03:51:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:18,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:18,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397182616] [2023-12-19 03:51:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397182616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:18,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:18,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:18,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550590082] [2023-12-19 03:51:18,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:18,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:51:18,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:51:18,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:51:18,890 INFO L87 Difference]: Start difference. First operand 7455 states and 9961 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:25,043 INFO L93 Difference]: Finished difference Result 26117 states and 35959 transitions. [2023-12-19 03:51:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:51:25,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2023-12-19 03:51:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:25,091 INFO L225 Difference]: With dead ends: 26117 [2023-12-19 03:51:25,092 INFO L226 Difference]: Without dead ends: 19450 [2023-12-19 03:51:25,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:51:25,104 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 1654 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 6109 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 6758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 6109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:25,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 1068 Invalid, 6758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 6109 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-19 03:51:25,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2023-12-19 03:51:25,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19302. [2023-12-19 03:51:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19302 states, 19301 states have (on average 1.2780684938604217) internal successors, (24668), 19301 states have internal predecessors, (24668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19302 states to 19302 states and 24668 transitions. [2023-12-19 03:51:25,408 INFO L78 Accepts]: Start accepts. Automaton has 19302 states and 24668 transitions. Word has length 161 [2023-12-19 03:51:25,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:25,409 INFO L495 AbstractCegarLoop]: Abstraction has 19302 states and 24668 transitions. [2023-12-19 03:51:25,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:25,410 INFO L276 IsEmpty]: Start isEmpty. Operand 19302 states and 24668 transitions. [2023-12-19 03:51:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-19 03:51:25,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:25,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:51:25,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 03:51:25,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:25,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash 848884864, now seen corresponding path program 1 times [2023-12-19 03:51:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:25,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024135463] [2023-12-19 03:51:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:25,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:25,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:25,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024135463] [2023-12-19 03:51:25,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024135463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:25,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:25,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:25,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535132507] [2023-12-19 03:51:25,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:25,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:25,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:25,744 INFO L87 Difference]: Start difference. First operand 19302 states and 24668 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:29,021 INFO L93 Difference]: Finished difference Result 52785 states and 68382 transitions. [2023-12-19 03:51:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2023-12-19 03:51:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:29,106 INFO L225 Difference]: With dead ends: 52785 [2023-12-19 03:51:29,107 INFO L226 Difference]: Without dead ends: 34271 [2023-12-19 03:51:29,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:29,136 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 853 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:29,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 923 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:51:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34271 states. [2023-12-19 03:51:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34271 to 34261. [2023-12-19 03:51:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34261 states, 34260 states have (on average 1.2201984821949796) internal successors, (41804), 34260 states have internal predecessors, (41804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34261 states to 34261 states and 41804 transitions. [2023-12-19 03:51:29,683 INFO L78 Accepts]: Start accepts. Automaton has 34261 states and 41804 transitions. Word has length 243 [2023-12-19 03:51:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:29,684 INFO L495 AbstractCegarLoop]: Abstraction has 34261 states and 41804 transitions. [2023-12-19 03:51:29,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 34261 states and 41804 transitions. [2023-12-19 03:51:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-19 03:51:29,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:29,692 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:51:29,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 03:51:29,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:29,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:29,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1793421703, now seen corresponding path program 1 times [2023-12-19 03:51:29,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:29,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109758985] [2023-12-19 03:51:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:29,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 03:51:29,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:29,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109758985] [2023-12-19 03:51:29,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109758985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:29,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:29,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034428729] [2023-12-19 03:51:29,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:29,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:29,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:29,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:29,996 INFO L87 Difference]: Start difference. First operand 34261 states and 41804 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:32,997 INFO L93 Difference]: Finished difference Result 61437 states and 75979 transitions. [2023-12-19 03:51:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:32,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 248 [2023-12-19 03:51:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:33,078 INFO L225 Difference]: With dead ends: 61437 [2023-12-19 03:51:33,078 INFO L226 Difference]: Without dead ends: 34270 [2023-12-19 03:51:33,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:33,112 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:33,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1209 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:51:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34270 states. [2023-12-19 03:51:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34270 to 34261. [2023-12-19 03:51:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34261 states, 34260 states have (on average 1.2190309398715704) internal successors, (41764), 34260 states have internal predecessors, (41764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34261 states to 34261 states and 41764 transitions. [2023-12-19 03:51:33,524 INFO L78 Accepts]: Start accepts. Automaton has 34261 states and 41764 transitions. Word has length 248 [2023-12-19 03:51:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:33,525 INFO L495 AbstractCegarLoop]: Abstraction has 34261 states and 41764 transitions. [2023-12-19 03:51:33,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 34261 states and 41764 transitions. [2023-12-19 03:51:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-19 03:51:33,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:33,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:33,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 03:51:33,528 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:33,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:33,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1516140959, now seen corresponding path program 1 times [2023-12-19 03:51:33,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:33,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048378216] [2023-12-19 03:51:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:33,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048378216] [2023-12-19 03:51:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048378216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:33,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:33,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:33,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729189456] [2023-12-19 03:51:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:33,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:33,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:33,973 INFO L87 Difference]: Start difference. First operand 34261 states and 41764 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:37,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:37,609 INFO L93 Difference]: Finished difference Result 92119 states and 113612 transitions. [2023-12-19 03:51:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:37,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2023-12-19 03:51:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:37,805 INFO L225 Difference]: With dead ends: 92119 [2023-12-19 03:51:37,805 INFO L226 Difference]: Without dead ends: 57859 [2023-12-19 03:51:37,843 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 [2023-12-19 03:51:37,848 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 947 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:37,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1807 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 03:51:37,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57859 states. [2023-12-19 03:51:38,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57859 to 55487. [2023-12-19 03:51:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55487 states, 55486 states have (on average 1.1846591933100241) internal successors, (65732), 55486 states have internal predecessors, (65732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55487 states to 55487 states and 65732 transitions. [2023-12-19 03:51:38,676 INFO L78 Accepts]: Start accepts. Automaton has 55487 states and 65732 transitions. Word has length 250 [2023-12-19 03:51:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:38,676 INFO L495 AbstractCegarLoop]: Abstraction has 55487 states and 65732 transitions. [2023-12-19 03:51:38,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 55487 states and 65732 transitions. [2023-12-19 03:51:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-19 03:51:38,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:38,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:38,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 03:51:38,681 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:38,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:38,681 INFO L85 PathProgramCache]: Analyzing trace with hash 21954410, now seen corresponding path program 1 times [2023-12-19 03:51:38,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:38,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691160793] [2023-12-19 03:51:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:38,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:38,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:38,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691160793] [2023-12-19 03:51:38,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691160793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:38,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:38,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:38,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546825742] [2023-12-19 03:51:38,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:38,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:38,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:38,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:38,842 INFO L87 Difference]: Start difference. First operand 55487 states and 65732 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:42,247 INFO L93 Difference]: Finished difference Result 129881 states and 153031 transitions. [2023-12-19 03:51:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:42,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2023-12-19 03:51:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:42,352 INFO L225 Difference]: With dead ends: 129881 [2023-12-19 03:51:42,353 INFO L226 Difference]: Without dead ends: 75182 [2023-12-19 03:51:42,385 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 [2023-12-19 03:51:42,385 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 982 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:42,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1383 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:51:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75182 states. [2023-12-19 03:51:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75182 to 74374. [2023-12-19 03:51:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74374 states, 74373 states have (on average 1.151089777204093) internal successors, (85610), 74373 states have internal predecessors, (85610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74374 states to 74374 states and 85610 transitions. [2023-12-19 03:51:43,341 INFO L78 Accepts]: Start accepts. Automaton has 74374 states and 85610 transitions. Word has length 257 [2023-12-19 03:51:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:43,341 INFO L495 AbstractCegarLoop]: Abstraction has 74374 states and 85610 transitions. [2023-12-19 03:51:43,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 74374 states and 85610 transitions. [2023-12-19 03:51:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-19 03:51:43,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:43,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:51:43,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 03:51:43,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:43,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:43,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1084952501, now seen corresponding path program 1 times [2023-12-19 03:51:43,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:43,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831596330] [2023-12-19 03:51:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:43,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-19 03:51:43,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:43,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831596330] [2023-12-19 03:51:43,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831596330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:43,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:43,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:43,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018984908] [2023-12-19 03:51:43,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:43,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:43,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:43,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:43,806 INFO L87 Difference]: Start difference. First operand 74374 states and 85610 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:47,443 INFO L93 Difference]: Finished difference Result 168433 states and 195649 transitions. [2023-12-19 03:51:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 332 [2023-12-19 03:51:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:47,567 INFO L225 Difference]: With dead ends: 168433 [2023-12-19 03:51:47,567 INFO L226 Difference]: Without dead ends: 94847 [2023-12-19 03:51:47,608 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 [2023-12-19 03:51:47,609 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 924 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:47,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 770 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:51:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94847 states. [2023-12-19 03:51:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94847 to 94046. [2023-12-19 03:51:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94046 states, 94045 states have (on average 1.1504386198096657) internal successors, (108193), 94045 states have internal predecessors, (108193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94046 states to 94046 states and 108193 transitions. [2023-12-19 03:51:48,885 INFO L78 Accepts]: Start accepts. Automaton has 94046 states and 108193 transitions. Word has length 332 [2023-12-19 03:51:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:48,885 INFO L495 AbstractCegarLoop]: Abstraction has 94046 states and 108193 transitions. [2023-12-19 03:51:48,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 94046 states and 108193 transitions. [2023-12-19 03:51:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-19 03:51:48,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:48,891 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:48,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 03:51:48,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:48,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2016710322, now seen corresponding path program 1 times [2023-12-19 03:51:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:48,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753814037] [2023-12-19 03:51:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:48,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 03:51:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753814037] [2023-12-19 03:51:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753814037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:49,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:49,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319791615] [2023-12-19 03:51:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:51:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:51:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:51:49,286 INFO L87 Difference]: Start difference. First operand 94046 states and 108193 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:56,285 INFO L93 Difference]: Finished difference Result 252040 states and 291132 transitions. [2023-12-19 03:51:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:51:56,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 342 [2023-12-19 03:51:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:56,519 INFO L225 Difference]: With dead ends: 252040 [2023-12-19 03:51:56,520 INFO L226 Difference]: Without dead ends: 158782 [2023-12-19 03:51:56,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:51:56,574 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1709 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 6223 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 7216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 6223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:56,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 1027 Invalid, 7216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [993 Valid, 6223 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 03:51:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158782 states. [2023-12-19 03:51:58,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158782 to 153932. [2023-12-19 03:51:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153932 states, 153931 states have (on average 1.147410203272895) internal successors, (176622), 153931 states have internal predecessors, (176622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153932 states to 153932 states and 176622 transitions. [2023-12-19 03:51:58,690 INFO L78 Accepts]: Start accepts. Automaton has 153932 states and 176622 transitions. Word has length 342 [2023-12-19 03:51:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:58,690 INFO L495 AbstractCegarLoop]: Abstraction has 153932 states and 176622 transitions. [2023-12-19 03:51:58,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:58,691 INFO L276 IsEmpty]: Start isEmpty. Operand 153932 states and 176622 transitions. [2023-12-19 03:51:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-19 03:51:58,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:58,697 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:51:58,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 03:51:58,697 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:58,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 10674249, now seen corresponding path program 1 times [2023-12-19 03:51:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:58,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258572483] [2023-12-19 03:51:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 229 proven. 110 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 03:51:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258572483] [2023-12-19 03:51:59,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258572483] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:51:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499102084] [2023-12-19 03:51:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:59,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:51:59,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:51:59,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:51:59,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 03:52:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:00,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:52:00,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-19 03:52:00,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:00,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499102084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:00,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:00,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 03:52:00,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290544012] [2023-12-19 03:52:00,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:00,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:00,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:00,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 03:52:00,191 INFO L87 Difference]: Start difference. First operand 153932 states and 176622 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:03,817 INFO L93 Difference]: Finished difference Result 304712 states and 349683 transitions. [2023-12-19 03:52:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:03,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2023-12-19 03:52:03,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:04,049 INFO L225 Difference]: With dead ends: 304712 [2023-12-19 03:52:04,049 INFO L226 Difference]: Without dead ends: 151568 [2023-12-19 03:52:04,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 03:52:04,132 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 1122 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:04,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1431 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:52:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151568 states. [2023-12-19 03:52:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151568 to 151567. [2023-12-19 03:52:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151567 states, 151566 states have (on average 1.1138184025441062) internal successors, (168817), 151566 states have internal predecessors, (168817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151567 states to 151567 states and 168817 transitions. [2023-12-19 03:52:06,268 INFO L78 Accepts]: Start accepts. Automaton has 151567 states and 168817 transitions. Word has length 356 [2023-12-19 03:52:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:06,268 INFO L495 AbstractCegarLoop]: Abstraction has 151567 states and 168817 transitions. [2023-12-19 03:52:06,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 151567 states and 168817 transitions. [2023-12-19 03:52:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-19 03:52:06,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:06,275 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:52:06,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 03:52:06,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 03:52:06,482 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:06,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1469840657, now seen corresponding path program 1 times [2023-12-19 03:52:06,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:06,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497215262] [2023-12-19 03:52:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:06,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 282 proven. 113 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 03:52:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497215262] [2023-12-19 03:52:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497215262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516641340] [2023-12-19 03:52:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:08,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:08,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:08,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:52:08,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 03:52:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:08,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:52:08,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:52:08,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516641340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:08,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:08,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:52:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751169100] [2023-12-19 03:52:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:08,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:08,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:08,334 INFO L87 Difference]: Start difference. First operand 151567 states and 168817 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:12,259 INFO L93 Difference]: Finished difference Result 297597 states and 333341 transitions. [2023-12-19 03:52:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2023-12-19 03:52:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:12,530 INFO L225 Difference]: With dead ends: 297597 [2023-12-19 03:52:12,530 INFO L226 Difference]: Without dead ends: 163351 [2023-12-19 03:52:12,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:12,608 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1219 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:12,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 402 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:52:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163351 states. [2023-12-19 03:52:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163351 to 163351. [2023-12-19 03:52:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163351 states, 163350 states have (on average 1.1046831955922864) internal successors, (180450), 163350 states have internal predecessors, (180450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163351 states to 163351 states and 180450 transitions. [2023-12-19 03:52:14,782 INFO L78 Accepts]: Start accepts. Automaton has 163351 states and 180450 transitions. Word has length 384 [2023-12-19 03:52:14,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:14,783 INFO L495 AbstractCegarLoop]: Abstraction has 163351 states and 180450 transitions. [2023-12-19 03:52:14,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 163351 states and 180450 transitions. [2023-12-19 03:52:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-19 03:52:14,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:14,810 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:14,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 03:52:15,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-19 03:52:15,029 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:15,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1258823579, now seen corresponding path program 1 times [2023-12-19 03:52:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:15,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332654475] [2023-12-19 03:52:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:15,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-19 03:52:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332654475] [2023-12-19 03:52:15,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332654475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:15,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:15,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:15,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714606557] [2023-12-19 03:52:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:15,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:15,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:15,379 INFO L87 Difference]: Start difference. First operand 163351 states and 180450 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:19,916 INFO L93 Difference]: Finished difference Result 348016 states and 384359 transitions. [2023-12-19 03:52:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 391 [2023-12-19 03:52:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:20,196 INFO L225 Difference]: With dead ends: 348016 [2023-12-19 03:52:20,197 INFO L226 Difference]: Without dead ends: 185453 [2023-12-19 03:52:20,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:20,279 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 838 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:20,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1778 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 03:52:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185453 states. [2023-12-19 03:52:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185453 to 174378. [2023-12-19 03:52:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174378 states, 174377 states have (on average 1.1018081513043578) internal successors, (192130), 174377 states have internal predecessors, (192130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174378 states to 174378 states and 192130 transitions. [2023-12-19 03:52:22,797 INFO L78 Accepts]: Start accepts. Automaton has 174378 states and 192130 transitions. Word has length 391 [2023-12-19 03:52:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:22,813 INFO L495 AbstractCegarLoop]: Abstraction has 174378 states and 192130 transitions. [2023-12-19 03:52:22,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 174378 states and 192130 transitions. [2023-12-19 03:52:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 03:52:22,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:22,832 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:22,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 03:52:22,833 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:22,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1172339333, now seen corresponding path program 1 times [2023-12-19 03:52:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498765588] [2023-12-19 03:52:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 03:52:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498765588] [2023-12-19 03:52:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498765588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:23,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:23,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:23,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029592031] [2023-12-19 03:52:23,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:23,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:23,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:23,142 INFO L87 Difference]: Start difference. First operand 174378 states and 192130 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:27,653 INFO L93 Difference]: Finished difference Result 378648 states and 418678 transitions. [2023-12-19 03:52:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:27,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 467 [2023-12-19 03:52:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:28,003 INFO L225 Difference]: With dead ends: 378648 [2023-12-19 03:52:28,003 INFO L226 Difference]: Without dead ends: 203483 [2023-12-19 03:52:28,106 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 [2023-12-19 03:52:28,107 INFO L413 NwaCegarLoop]: 1732 mSDtfsCounter, 733 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:28,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1862 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 03:52:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203483 states. [2023-12-19 03:52:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203483 to 199533. [2023-12-19 03:52:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199533 states, 199532 states have (on average 1.0893891706593428) internal successors, (217368), 199532 states have internal predecessors, (217368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199533 states to 199533 states and 217368 transitions. [2023-12-19 03:52:31,554 INFO L78 Accepts]: Start accepts. Automaton has 199533 states and 217368 transitions. Word has length 467 [2023-12-19 03:52:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:31,555 INFO L495 AbstractCegarLoop]: Abstraction has 199533 states and 217368 transitions. [2023-12-19 03:52:31,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:31,555 INFO L276 IsEmpty]: Start isEmpty. Operand 199533 states and 217368 transitions. [2023-12-19 03:52:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 03:52:31,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:31,567 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:31,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 03:52:31,567 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:31,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:31,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1170734769, now seen corresponding path program 1 times [2023-12-19 03:52:31,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:31,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357550702] [2023-12-19 03:52:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:31,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2023-12-19 03:52:32,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357550702] [2023-12-19 03:52:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357550702] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821461197] [2023-12-19 03:52:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:32,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:32,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:32,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:52:32,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 03:52:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:32,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:52:32,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2023-12-19 03:52:33,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:33,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821461197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:33,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:33,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 03:52:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279260531] [2023-12-19 03:52:33,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:33,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:33,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:52:33,006 INFO L87 Difference]: Start difference. First operand 199533 states and 217368 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:36,965 INFO L93 Difference]: Finished difference Result 394332 states and 429793 transitions. [2023-12-19 03:52:36,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:36,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 467 [2023-12-19 03:52:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:37,285 INFO L225 Difference]: With dead ends: 394332 [2023-12-19 03:52:37,286 INFO L226 Difference]: Without dead ends: 195587 [2023-12-19 03:52:37,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:52:37,386 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 983 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:37,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 716 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:52:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195587 states. [2023-12-19 03:52:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195587 to 194006. [2023-12-19 03:52:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194006 states, 194005 states have (on average 1.0671992989871395) internal successors, (207042), 194005 states have internal predecessors, (207042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194006 states to 194006 states and 207042 transitions. [2023-12-19 03:52:39,779 INFO L78 Accepts]: Start accepts. Automaton has 194006 states and 207042 transitions. Word has length 467 [2023-12-19 03:52:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:39,780 INFO L495 AbstractCegarLoop]: Abstraction has 194006 states and 207042 transitions. [2023-12-19 03:52:39,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 194006 states and 207042 transitions. [2023-12-19 03:52:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2023-12-19 03:52:39,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:39,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:39,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 03:52:39,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:39,996 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:39,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:39,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1886055523, now seen corresponding path program 1 times [2023-12-19 03:52:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:39,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414635885] [2023-12-19 03:52:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:39,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 312 proven. 110 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 03:52:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414635885] [2023-12-19 03:52:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414635885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491064238] [2023-12-19 03:52:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:41,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:41,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:41,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:52:41,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 03:52:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:41,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:52:41,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-19 03:52:42,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:42,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491064238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:42,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:42,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-19 03:52:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519335951] [2023-12-19 03:52:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:42,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:42,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:42,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:42,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:52:42,600 INFO L87 Difference]: Start difference. First operand 194006 states and 207042 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:46,157 INFO L93 Difference]: Finished difference Result 374642 states and 400430 transitions. [2023-12-19 03:52:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:46,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 538 [2023-12-19 03:52:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:46,492 INFO L225 Difference]: With dead ends: 374642 [2023-12-19 03:52:46,493 INFO L226 Difference]: Without dead ends: 198744 [2023-12-19 03:52:46,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:52:46,601 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 545 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:46,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1071 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:52:46,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198744 states. [2023-12-19 03:52:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198744 to 197158. [2023-12-19 03:52:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197158 states, 197157 states have (on average 1.0615702206870667) internal successors, (209296), 197157 states have internal predecessors, (209296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197158 states to 197158 states and 209296 transitions. [2023-12-19 03:52:49,455 INFO L78 Accepts]: Start accepts. Automaton has 197158 states and 209296 transitions. Word has length 538 [2023-12-19 03:52:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:49,455 INFO L495 AbstractCegarLoop]: Abstraction has 197158 states and 209296 transitions. [2023-12-19 03:52:49,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 197158 states and 209296 transitions. [2023-12-19 03:52:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2023-12-19 03:52:49,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:49,467 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:49,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 03:52:49,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 03:52:49,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:49,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:49,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1684699370, now seen corresponding path program 1 times [2023-12-19 03:52:49,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:49,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489947920] [2023-12-19 03:52:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:49,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2023-12-19 03:52:49,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:49,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489947920] [2023-12-19 03:52:49,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489947920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:49,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392577965] [2023-12-19 03:52:49,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:49,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:49,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:49,976 INFO L87 Difference]: Start difference. First operand 197158 states and 209296 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:54,688 INFO L93 Difference]: Finished difference Result 428178 states and 455474 transitions. [2023-12-19 03:52:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:54,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 557 [2023-12-19 03:52:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:55,128 INFO L225 Difference]: With dead ends: 428178 [2023-12-19 03:52:55,129 INFO L226 Difference]: Without dead ends: 249128 [2023-12-19 03:52:55,255 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 [2023-12-19 03:52:55,255 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 941 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2731 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:55,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 619 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2731 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:52:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249128 states. [2023-12-19 03:52:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249128 to 214478. [2023-12-19 03:52:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214478 states, 214477 states have (on average 1.0585563953244403) internal successors, (227036), 214477 states have internal predecessors, (227036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214478 states to 214478 states and 227036 transitions. [2023-12-19 03:52:58,366 INFO L78 Accepts]: Start accepts. Automaton has 214478 states and 227036 transitions. Word has length 557 [2023-12-19 03:52:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:58,366 INFO L495 AbstractCegarLoop]: Abstraction has 214478 states and 227036 transitions. [2023-12-19 03:52:58,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 214478 states and 227036 transitions. [2023-12-19 03:52:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-12-19 03:52:58,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:58,382 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:58,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 03:52:58,383 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:58,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:58,383 INFO L85 PathProgramCache]: Analyzing trace with hash 767536745, now seen corresponding path program 1 times [2023-12-19 03:52:58,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:58,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095935360] [2023-12-19 03:52:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:58,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 819 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-19 03:52:58,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:58,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095935360] [2023-12-19 03:52:58,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095935360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:58,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:58,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157196788] [2023-12-19 03:52:58,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:58,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:58,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:58,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:58,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:58,987 INFO L87 Difference]: Start difference. First operand 214478 states and 227036 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:02,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:02,889 INFO L93 Difference]: Finished difference Result 432106 states and 457291 transitions. [2023-12-19 03:53:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:02,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 580 [2023-12-19 03:53:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:03,235 INFO L225 Difference]: With dead ends: 432106 [2023-12-19 03:53:03,235 INFO L226 Difference]: Without dead ends: 218416 [2023-12-19 03:53:03,356 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 [2023-12-19 03:53:03,357 INFO L413 NwaCegarLoop]: 1318 mSDtfsCounter, 920 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:03,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1391 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:53:03,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218416 states. [2023-12-19 03:53:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218416 to 216830. [2023-12-19 03:53:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216830 states, 216829 states have (on average 1.0494444931259195) internal successors, (227550), 216829 states have internal predecessors, (227550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216830 states to 216830 states and 227550 transitions. [2023-12-19 03:53:06,752 INFO L78 Accepts]: Start accepts. Automaton has 216830 states and 227550 transitions. Word has length 580 [2023-12-19 03:53:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:06,753 INFO L495 AbstractCegarLoop]: Abstraction has 216830 states and 227550 transitions. [2023-12-19 03:53:06,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 216830 states and 227550 transitions. [2023-12-19 03:53:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-19 03:53:06,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:06,787 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:06,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 03:53:06,788 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:06,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:06,788 INFO L85 PathProgramCache]: Analyzing trace with hash -94328971, now seen corresponding path program 1 times [2023-12-19 03:53:06,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:06,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83113310] [2023-12-19 03:53:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:06,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1342 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-12-19 03:53:07,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:07,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83113310] [2023-12-19 03:53:07,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83113310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:07,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:07,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:07,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657908096] [2023-12-19 03:53:07,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:07,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:07,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:07,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:07,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:07,639 INFO L87 Difference]: Start difference. First operand 216830 states and 227550 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:11,867 INFO L93 Difference]: Finished difference Result 439985 states and 461977 transitions. [2023-12-19 03:53:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:11,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 631 [2023-12-19 03:53:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:12,281 INFO L225 Difference]: With dead ends: 439985 [2023-12-19 03:53:12,281 INFO L226 Difference]: Without dead ends: 240476 [2023-12-19 03:53:12,411 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 [2023-12-19 03:53:12,411 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 669 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:12,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1895 Invalid, 2651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:53:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240476 states. [2023-12-19 03:53:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240476 to 234962. [2023-12-19 03:53:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234962 states, 234961 states have (on average 1.0473780755104038) internal successors, (246093), 234961 states have internal predecessors, (246093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:15,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234962 states to 234962 states and 246093 transitions. [2023-12-19 03:53:15,475 INFO L78 Accepts]: Start accepts. Automaton has 234962 states and 246093 transitions. Word has length 631 [2023-12-19 03:53:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:15,476 INFO L495 AbstractCegarLoop]: Abstraction has 234962 states and 246093 transitions. [2023-12-19 03:53:15,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 234962 states and 246093 transitions. [2023-12-19 03:53:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-12-19 03:53:15,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:15,496 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-12-19 03:53:15,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 03:53:15,497 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:15,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash 14202531, now seen corresponding path program 1 times [2023-12-19 03:53:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:15,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268707511] [2023-12-19 03:53:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:15,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 03:53:16,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268707511] [2023-12-19 03:53:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268707511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:16,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:16,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 03:53:16,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677817500] [2023-12-19 03:53:16,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:16,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:53:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:53:16,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:53:16,373 INFO L87 Difference]: Start difference. First operand 234962 states and 246093 transitions. Second operand has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:23,818 INFO L93 Difference]: Finished difference Result 563758 states and 591593 transitions. [2023-12-19 03:53:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:53:23,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 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 663 [2023-12-19 03:53:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:24,355 INFO L225 Difference]: With dead ends: 563758 [2023-12-19 03:53:24,356 INFO L226 Difference]: Without dead ends: 328795 [2023-12-19 03:53:24,435 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 [2023-12-19 03:53:24,440 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 1556 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 6074 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 6775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 6074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:24,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 756 Invalid, 6775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 6074 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-19 03:53:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328795 states. [2023-12-19 03:53:28,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328795 to 316849. [2023-12-19 03:53:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316849 states, 316848 states have (on average 1.0497525627430186) internal successors, (332612), 316848 states have internal predecessors, (332612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316849 states to 316849 states and 332612 transitions. [2023-12-19 03:53:29,097 INFO L78 Accepts]: Start accepts. Automaton has 316849 states and 332612 transitions. Word has length 663 [2023-12-19 03:53:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:29,098 INFO L495 AbstractCegarLoop]: Abstraction has 316849 states and 332612 transitions. [2023-12-19 03:53:29,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 316849 states and 332612 transitions. [2023-12-19 03:53:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-12-19 03:53:29,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:29,124 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:29,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 03:53:29,124 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:29,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:29,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1287759281, now seen corresponding path program 1 times [2023-12-19 03:53:29,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92053242] [2023-12-19 03:53:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:29,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 790 proven. 75 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-19 03:53:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92053242] [2023-12-19 03:53:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92053242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:53:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429888485] [2023-12-19 03:53:30,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:30,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:53:30,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:53:30,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:53:30,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 03:53:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:30,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:53:30,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:53:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-19 03:53:31,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:53:31,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429888485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:31,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:53:31,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-19 03:53:31,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505672105] [2023-12-19 03:53:31,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:31,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:53:31,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:53:31,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:53:31,446 INFO L87 Difference]: Start difference. First operand 316849 states and 332612 transitions. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:36,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:36,849 INFO L93 Difference]: Finished difference Result 615594 states and 646851 transitions. [2023-12-19 03:53:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:53:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 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 671 [2023-12-19 03:53:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:37,291 INFO L225 Difference]: With dead ends: 615594 [2023-12-19 03:53:37,292 INFO L226 Difference]: Without dead ends: 320001 [2023-12-19 03:53:37,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:53:37,791 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 1470 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 4756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:37,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 821 Invalid, 4756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 03:53:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320001 states. [2023-12-19 03:53:41,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320001 to 316849. [2023-12-19 03:53:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316849 states, 316848 states have (on average 1.0477326667676614) internal successors, (331972), 316848 states have internal predecessors, (331972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:42,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316849 states to 316849 states and 331972 transitions. [2023-12-19 03:53:42,603 INFO L78 Accepts]: Start accepts. Automaton has 316849 states and 331972 transitions. Word has length 671 [2023-12-19 03:53:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:42,604 INFO L495 AbstractCegarLoop]: Abstraction has 316849 states and 331972 transitions. [2023-12-19 03:53:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 316849 states and 331972 transitions. [2023-12-19 03:53:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-12-19 03:53:42,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:42,640 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:42,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 03:53:42,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 03:53:42,847 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:42,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -63829594, now seen corresponding path program 1 times [2023-12-19 03:53:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389041438] [2023-12-19 03:53:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 03:53:43,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389041438] [2023-12-19 03:53:43,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389041438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:43,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:43,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:43,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652578682] [2023-12-19 03:53:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:43,868 INFO L87 Difference]: Start difference. First operand 316849 states and 331972 transitions. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:49,404 INFO L93 Difference]: Finished difference Result 679367 states and 713584 transitions. [2023-12-19 03:53:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 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 700 [2023-12-19 03:53:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:50,141 INFO L225 Difference]: With dead ends: 679367 [2023-12-19 03:53:50,142 INFO L226 Difference]: Without dead ends: 383774 [2023-12-19 03:53:50,335 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 [2023-12-19 03:53:50,335 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 955 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:50,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 596 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 03:53:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383774 states. [2023-12-19 03:53:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383774 to 382192. [2023-12-19 03:53:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382192 states, 382191 states have (on average 1.0449487298235698) internal successors, (399370), 382191 states have internal predecessors, (399370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:55,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382192 states to 382192 states and 399370 transitions. [2023-12-19 03:53:55,753 INFO L78 Accepts]: Start accepts. Automaton has 382192 states and 399370 transitions. Word has length 700 [2023-12-19 03:53:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:55,753 INFO L495 AbstractCegarLoop]: Abstraction has 382192 states and 399370 transitions. [2023-12-19 03:53:55,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 382192 states and 399370 transitions. [2023-12-19 03:53:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-19 03:53:56,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:56,197 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:53:56,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 03:53:56,197 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:56,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:56,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1617408476, now seen corresponding path program 1 times [2023-12-19 03:53:56,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:56,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009072633] [2023-12-19 03:53:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:56,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1268 backedges. 670 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-19 03:53:56,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:56,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009072633] [2023-12-19 03:53:56,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009072633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:56,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:56,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:56,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231542235] [2023-12-19 03:53:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:56,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:56,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:56,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:56,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:56,741 INFO L87 Difference]: Start difference. First operand 382192 states and 399370 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:01,599 INFO L93 Difference]: Finished difference Result 781734 states and 817098 transitions. [2023-12-19 03:54:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:01,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 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 724 [2023-12-19 03:54:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:02,278 INFO L225 Difference]: With dead ends: 781734 [2023-12-19 03:54:02,279 INFO L226 Difference]: Without dead ends: 414502 [2023-12-19 03:54:02,415 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 [2023-12-19 03:54:02,415 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 669 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:02,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1845 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:54:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414502 states. [2023-12-19 03:54:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414502 to 385343. [2023-12-19 03:54:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385343 states, 385342 states have (on average 1.0441036793290117) internal successors, (402337), 385342 states have internal predecessors, (402337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385343 states to 385343 states and 402337 transitions. [2023-12-19 03:54:09,298 INFO L78 Accepts]: Start accepts. Automaton has 385343 states and 402337 transitions. Word has length 724 [2023-12-19 03:54:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:09,298 INFO L495 AbstractCegarLoop]: Abstraction has 385343 states and 402337 transitions. [2023-12-19 03:54:09,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 385343 states and 402337 transitions. [2023-12-19 03:54:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 03:54:09,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:09,364 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:09,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 03:54:09,365 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:09,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash -557999437, now seen corresponding path program 1 times [2023-12-19 03:54:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:09,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486719682] [2023-12-19 03:54:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-12-19 03:54:10,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486719682] [2023-12-19 03:54:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486719682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:10,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 03:54:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501390743] [2023-12-19 03:54:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:10,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:54:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:54:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:54:10,310 INFO L87 Difference]: Start difference. First operand 385343 states and 402337 transitions. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:18,702 INFO L93 Difference]: Finished difference Result 882677 states and 921934 transitions. [2023-12-19 03:54:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:54:18,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 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 729 [2023-12-19 03:54:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:19,596 INFO L225 Difference]: With dead ends: 882677 [2023-12-19 03:54:19,596 INFO L226 Difference]: Without dead ends: 498122 [2023-12-19 03:54:19,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:54:19,783 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 1691 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 6045 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 7019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 6045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:19,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 823 Invalid, 7019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 6045 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-19 03:54:20,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498122 states. [2023-12-19 03:54:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498122 to 452285. [2023-12-19 03:54:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452285 states, 452284 states have (on average 1.0423450752182257) internal successors, (471436), 452284 states have internal predecessors, (471436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452285 states to 452285 states and 471436 transitions. [2023-12-19 03:54:26,992 INFO L78 Accepts]: Start accepts. Automaton has 452285 states and 471436 transitions. Word has length 729 [2023-12-19 03:54:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:26,992 INFO L495 AbstractCegarLoop]: Abstraction has 452285 states and 471436 transitions. [2023-12-19 03:54:26,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 452285 states and 471436 transitions. [2023-12-19 03:54:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-19 03:54:27,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:27,013 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:27,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 03:54:27,014 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:27,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2001588673, now seen corresponding path program 1 times [2023-12-19 03:54:27,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:27,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870272841] [2023-12-19 03:54:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:27,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 945 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-19 03:54:27,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:27,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870272841] [2023-12-19 03:54:27,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870272841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:27,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:27,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:54:27,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634084768] [2023-12-19 03:54:27,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:27,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:27,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:27,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:27,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:27,762 INFO L87 Difference]: Start difference. First operand 452285 states and 471436 transitions. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:33,235 INFO L93 Difference]: Finished difference Result 886493 states and 924306 transitions. [2023-12-19 03:54:33,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:33,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 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 742 [2023-12-19 03:54:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:34,095 INFO L225 Difference]: With dead ends: 886493 [2023-12-19 03:54:34,096 INFO L226 Difference]: Without dead ends: 449951 [2023-12-19 03:54:34,315 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 [2023-12-19 03:54:34,316 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 607 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:34,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1739 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:54:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449951 states. [2023-12-19 03:54:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449951 to 438889. [2023-12-19 03:54:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438889 states, 438888 states have (on average 1.040591221450575) internal successors, (456703), 438888 states have internal predecessors, (456703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)