/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:56:44,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:56:44,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:56:44,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:56:44,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:56:44,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:56:44,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:56:44,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:56:44,602 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:56:44,604 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:56:44,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:56:44,605 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:56:44,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:56:44,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:56:44,607 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:56:44,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:56:44,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:56:44,607 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:56:44,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:56:44,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:56:44,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:56:44,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:56:44,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:56:44,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:56:44,609 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:56:44,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:56:44,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:56:44,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:56:44,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:56:44,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:56:44,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:56:44,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:56:44,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:56:44,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:56:44,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:56:44,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:56:44,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:56:44,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:56:44,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:56:44,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:56:44,612 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:56:44,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:56:44,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:56:44,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:56:44,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:56:44,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:56:44,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:56:44,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:56:44,826 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:56:44,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label54.c [2023-12-15 18:56:45,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:56:46,228 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:56:46,229 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label54.c [2023-12-15 18:56:46,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad0fcd4c/e5712e5d8d27414da6f09fc554d7f17d/FLAGbdf1c7457 [2023-12-15 18:56:46,269 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad0fcd4c/e5712e5d8d27414da6f09fc554d7f17d [2023-12-15 18:56:46,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:56:46,272 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:56:46,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:56:46,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:56:46,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:56:46,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:56:46" (1/1) ... [2023-12-15 18:56:46,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb28d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:46, skipping insertion in model container [2023-12-15 18:56:46,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:56:46" (1/1) ... [2023-12-15 18:56:46,378 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:56:46,574 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_label54.c[4044,4057] [2023-12-15 18:56:47,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:56:47,326 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:56:47,339 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_label54.c[4044,4057] [2023-12-15 18:56:47,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:56:47,747 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:56:47,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47 WrapperNode [2023-12-15 18:56:47,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:56:47,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:56:47,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:56:47,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:56:47,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:47,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,137 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-15 18:56:48,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:56:48,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:56:48,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:56:48,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:56:48,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,216 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,429 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]. [2023-12-15 18:56:48,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:56:48,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:56:48,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:56:48,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:56:48,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (1/1) ... [2023-12-15 18:56:48,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:56:48,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:56:48,834 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) [2023-12-15 18:56:48,850 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 [2023-12-15 18:56:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:56:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:56:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:56:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:56:48,908 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:56:48,909 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:56:52,395 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:56:52,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:56:52,430 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:56:52,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:56:52 BoogieIcfgContainer [2023-12-15 18:56:52,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:56:52,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:56:52,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:56:52,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:56:52,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:56:46" (1/3) ... [2023-12-15 18:56:52,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d163cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:56:52, skipping insertion in model container [2023-12-15 18:56:52,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:47" (2/3) ... [2023-12-15 18:56:52,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d163cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:56:52, skipping insertion in model container [2023-12-15 18:56:52,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:56:52" (3/3) ... [2023-12-15 18:56:52,436 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label54.c [2023-12-15 18:56:52,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:56:52,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:56:52,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:56:52,493 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;@3831a165, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:56:52,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:56:52,499 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) [2023-12-15 18:56:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 18:56:52,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:52,504 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] [2023-12-15 18:56:52,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:52,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash 231807794, now seen corresponding path program 1 times [2023-12-15 18:56:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:52,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623243862] [2023-12-15 18:56:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:52,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:56:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623243862] [2023-12-15 18:56:52,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623243862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:52,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:52,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:52,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071001882] [2023-12-15 18:56:52,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:52,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:56:52,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:52,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:56:52,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:56:52,640 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:52,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:52,697 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-15 18:56:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:56:52,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-15 18:56:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:52,733 INFO L225 Difference]: With dead ends: 2071 [2023-12-15 18:56:52,733 INFO L226 Difference]: Without dead ends: 1034 [2023-12-15 18:56:52,740 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 [2023-12-15 18:56:52,742 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 [2023-12-15 18:56:52,742 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] [2023-12-15 18:56:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-15 18:56:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-15 18:56:52,827 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) [2023-12-15 18:56:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-15 18:56:52,834 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 26 [2023-12-15 18:56:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:52,834 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-15 18:56:52,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-15 18:56:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 18:56:52,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:52,835 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] [2023-12-15 18:56:52,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:56:52,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:52,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash 358221368, now seen corresponding path program 1 times [2023-12-15 18:56:52,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:52,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254769595] [2023-12-15 18:56:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:52,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:56:52,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:52,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254769595] [2023-12-15 18:56:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254769595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:52,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:52,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:52,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327626705] [2023-12-15 18:56:52,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:52,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:52,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:52,952 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:56,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:56,066 INFO L93 Difference]: Finished difference Result 2996 states and 5467 transitions. [2023-12-15 18:56:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:56,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-15 18:56:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:56,074 INFO L225 Difference]: With dead ends: 2996 [2023-12-15 18:56:56,074 INFO L226 Difference]: Without dead ends: 1963 [2023-12-15 18:56:56,075 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 [2023-12-15 18:56:56,081 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1128 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:56,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 945 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:56:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2023-12-15 18:56:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1950. [2023-12-15 18:56:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1949 states have (on average 1.6541816316059517) internal successors, (3224), 1949 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3224 transitions. [2023-12-15 18:56:56,138 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3224 transitions. Word has length 26 [2023-12-15 18:56:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:56,138 INFO L495 AbstractCegarLoop]: Abstraction has 1950 states and 3224 transitions. [2023-12-15 18:56:56,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3224 transitions. [2023-12-15 18:56:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-15 18:56:56,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:56,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:56,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:56:56,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:56,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1429247058, now seen corresponding path program 1 times [2023-12-15 18:56:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:56,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379322269] [2023-12-15 18:56:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:56,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:56:56,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:56,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379322269] [2023-12-15 18:56:56,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379322269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:56,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2960356] [2023-12-15 18:56:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:56,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:56,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:56,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:56,400 INFO L87 Difference]: Start difference. First operand 1950 states and 3224 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:59,646 INFO L93 Difference]: Finished difference Result 5541 states and 9221 transitions. [2023-12-15 18:56:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:59,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-15 18:56:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:59,656 INFO L225 Difference]: With dead ends: 5541 [2023-12-15 18:56:59,656 INFO L226 Difference]: Without dead ends: 3592 [2023-12-15 18:56:59,659 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 [2023-12-15 18:56:59,663 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:59,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1007 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 18:56:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2023-12-15 18:56:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3580. [2023-12-15 18:56:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 1.5051690416317407) internal successors, (5387), 3579 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 5387 transitions. [2023-12-15 18:56:59,711 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 5387 transitions. Word has length 97 [2023-12-15 18:56:59,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:59,712 INFO L495 AbstractCegarLoop]: Abstraction has 3580 states and 5387 transitions. [2023-12-15 18:56:59,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:59,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 5387 transitions. [2023-12-15 18:56:59,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 18:56:59,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:59,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:59,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:56:59,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:59,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:59,715 INFO L85 PathProgramCache]: Analyzing trace with hash 331052725, now seen corresponding path program 1 times [2023-12-15 18:56:59,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587635412] [2023-12-15 18:56:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:59,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:56:59,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:59,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587635412] [2023-12-15 18:56:59,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587635412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:59,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:59,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:59,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179797630] [2023-12-15 18:56:59,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:59,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:59,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:59,877 INFO L87 Difference]: Start difference. First operand 3580 states and 5387 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:03,060 INFO L93 Difference]: Finished difference Result 10351 states and 15624 transitions. [2023-12-15 18:57:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:03,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-12-15 18:57:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:03,077 INFO L225 Difference]: With dead ends: 10351 [2023-12-15 18:57:03,078 INFO L226 Difference]: Without dead ends: 6772 [2023-12-15 18:57:03,081 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 [2023-12-15 18:57:03,081 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 785 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:03,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1170 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:57:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2023-12-15 18:57:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6748. [2023-12-15 18:57:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6748 states, 6747 states have (on average 1.3253297761968281) internal successors, (8942), 6747 states have internal predecessors, (8942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 8942 transitions. [2023-12-15 18:57:03,159 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 8942 transitions. Word has length 111 [2023-12-15 18:57:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:03,159 INFO L495 AbstractCegarLoop]: Abstraction has 6748 states and 8942 transitions. [2023-12-15 18:57:03,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 8942 transitions. [2023-12-15 18:57:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-15 18:57:03,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:03,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:03,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:57:03,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:03,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1298196711, now seen corresponding path program 1 times [2023-12-15 18:57:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:03,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131940395] [2023-12-15 18:57:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:03,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:57:03,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131940395] [2023-12-15 18:57:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131940395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:03,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:03,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:57:03,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400903170] [2023-12-15 18:57:03,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:03,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:03,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:03,265 INFO L87 Difference]: Start difference. First operand 6748 states and 8942 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:06,162 INFO L93 Difference]: Finished difference Result 19803 states and 26219 transitions. [2023-12-15 18:57:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:06,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2023-12-15 18:57:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:06,207 INFO L225 Difference]: With dead ends: 19803 [2023-12-15 18:57:06,207 INFO L226 Difference]: Without dead ends: 13056 [2023-12-15 18:57:06,217 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 [2023-12-15 18:57:06,218 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 865 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:06,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1033 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:57:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13056 states. [2023-12-15 18:57:06,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13056 to 13051. [2023-12-15 18:57:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13051 states, 13050 states have (on average 1.2179310344827585) internal successors, (15894), 13050 states have internal predecessors, (15894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13051 states to 13051 states and 15894 transitions. [2023-12-15 18:57:06,385 INFO L78 Accepts]: Start accepts. Automaton has 13051 states and 15894 transitions. Word has length 140 [2023-12-15 18:57:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:06,386 INFO L495 AbstractCegarLoop]: Abstraction has 13051 states and 15894 transitions. [2023-12-15 18:57:06,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 13051 states and 15894 transitions. [2023-12-15 18:57:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-15 18:57:06,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:06,392 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:57:06,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:57:06,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:06,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:06,392 INFO L85 PathProgramCache]: Analyzing trace with hash -93705797, now seen corresponding path program 1 times [2023-12-15 18:57:06,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:06,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411876297] [2023-12-15 18:57:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:06,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-15 18:57:06,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:06,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411876297] [2023-12-15 18:57:06,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411876297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:06,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:06,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:57:06,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695980955] [2023-12-15 18:57:06,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:06,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:06,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:06,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:06,888 INFO L87 Difference]: Start difference. First operand 13051 states and 15894 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:09,505 INFO L93 Difference]: Finished difference Result 26888 states and 32589 transitions. [2023-12-15 18:57:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2023-12-15 18:57:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:09,526 INFO L225 Difference]: With dead ends: 26888 [2023-12-15 18:57:09,526 INFO L226 Difference]: Without dead ends: 13838 [2023-12-15 18:57:09,538 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 [2023-12-15 18:57:09,542 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:09,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1211 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:57:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13838 states. [2023-12-15 18:57:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13838 to 13838. [2023-12-15 18:57:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13838 states, 13837 states have (on average 1.2058972320589723) internal successors, (16686), 13837 states have internal predecessors, (16686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13838 states to 13838 states and 16686 transitions. [2023-12-15 18:57:09,715 INFO L78 Accepts]: Start accepts. Automaton has 13838 states and 16686 transitions. Word has length 218 [2023-12-15 18:57:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:09,716 INFO L495 AbstractCegarLoop]: Abstraction has 13838 states and 16686 transitions. [2023-12-15 18:57:09,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 13838 states and 16686 transitions. [2023-12-15 18:57:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-15 18:57:09,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:09,718 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:57:09,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:57:09,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:09,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2001769124, now seen corresponding path program 1 times [2023-12-15 18:57:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:09,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116161295] [2023-12-15 18:57:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:09,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:57:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116161295] [2023-12-15 18:57:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116161295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:09,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113878832] [2023-12-15 18:57:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:09,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:09,862 INFO L87 Difference]: Start difference. First operand 13838 states and 16686 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:12,976 INFO L93 Difference]: Finished difference Result 33199 states and 41057 transitions. [2023-12-15 18:57:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2023-12-15 18:57:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:13,048 INFO L225 Difference]: With dead ends: 33199 [2023-12-15 18:57:13,049 INFO L226 Difference]: Without dead ends: 20149 [2023-12-15 18:57:13,076 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 [2023-12-15 18:57:13,077 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 860 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:13,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 941 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:57:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20149 states. [2023-12-15 18:57:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20149 to 20139. [2023-12-15 18:57:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20139 states, 20138 states have (on average 1.1898897606515046) internal successors, (23962), 20138 states have internal predecessors, (23962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20139 states to 20139 states and 23962 transitions. [2023-12-15 18:57:13,312 INFO L78 Accepts]: Start accepts. Automaton has 20139 states and 23962 transitions. Word has length 225 [2023-12-15 18:57:13,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:13,312 INFO L495 AbstractCegarLoop]: Abstraction has 20139 states and 23962 transitions. [2023-12-15 18:57:13,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 20139 states and 23962 transitions. [2023-12-15 18:57:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-15 18:57:13,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:13,315 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:57:13,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:57:13,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:13,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:13,317 INFO L85 PathProgramCache]: Analyzing trace with hash -405941161, now seen corresponding path program 1 times [2023-12-15 18:57:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251989416] [2023-12-15 18:57:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:57:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251989416] [2023-12-15 18:57:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251989416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:13,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:13,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799818702] [2023-12-15 18:57:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:13,440 INFO L87 Difference]: Start difference. First operand 20139 states and 23962 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:16,152 INFO L93 Difference]: Finished difference Result 39360 states and 46952 transitions. [2023-12-15 18:57:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:16,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2023-12-15 18:57:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:16,186 INFO L225 Difference]: With dead ends: 39360 [2023-12-15 18:57:16,186 INFO L226 Difference]: Without dead ends: 20009 [2023-12-15 18:57:16,195 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 [2023-12-15 18:57:16,196 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 1037 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:16,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1639 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:57:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2023-12-15 18:57:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 19219. [2023-12-15 18:57:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19219 states, 19218 states have (on average 1.1321677593922364) internal successors, (21758), 19218 states have internal predecessors, (21758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19219 states to 19219 states and 21758 transitions. [2023-12-15 18:57:16,337 INFO L78 Accepts]: Start accepts. Automaton has 19219 states and 21758 transitions. Word has length 240 [2023-12-15 18:57:16,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:16,337 INFO L495 AbstractCegarLoop]: Abstraction has 19219 states and 21758 transitions. [2023-12-15 18:57:16,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:16,338 INFO L276 IsEmpty]: Start isEmpty. Operand 19219 states and 21758 transitions. [2023-12-15 18:57:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-15 18:57:16,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:16,341 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:57:16,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:57:16,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:16,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:16,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1695475449, now seen corresponding path program 1 times [2023-12-15 18:57:16,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:16,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016697873] [2023-12-15 18:57:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:16,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-15 18:57:16,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:16,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016697873] [2023-12-15 18:57:16,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016697873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:16,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:16,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610244850] [2023-12-15 18:57:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:16,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:16,491 INFO L87 Difference]: Start difference. First operand 19219 states and 21758 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:19,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:19,567 INFO L93 Difference]: Finished difference Result 43954 states and 50451 transitions. [2023-12-15 18:57:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:19,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 314 [2023-12-15 18:57:19,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:19,622 INFO L225 Difference]: With dead ends: 43954 [2023-12-15 18:57:19,623 INFO L226 Difference]: Without dead ends: 25523 [2023-12-15 18:57:19,640 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 [2023-12-15 18:57:19,642 INFO L413 NwaCegarLoop]: 1775 mSDtfsCounter, 841 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:19,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1916 Invalid, 3253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:57:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25523 states. [2023-12-15 18:57:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25523 to 24732. [2023-12-15 18:57:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24732 states, 24731 states have (on average 1.1185960939711292) internal successors, (27664), 24731 states have internal predecessors, (27664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24732 states to 24732 states and 27664 transitions. [2023-12-15 18:57:19,857 INFO L78 Accepts]: Start accepts. Automaton has 24732 states and 27664 transitions. Word has length 314 [2023-12-15 18:57:19,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:19,857 INFO L495 AbstractCegarLoop]: Abstraction has 24732 states and 27664 transitions. [2023-12-15 18:57:19,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 24732 states and 27664 transitions. [2023-12-15 18:57:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-15 18:57:19,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:19,861 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:19,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:57:19,861 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:19,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash -947988761, now seen corresponding path program 1 times [2023-12-15 18:57:19,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:19,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789107010] [2023-12-15 18:57:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:19,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-15 18:57:20,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789107010] [2023-12-15 18:57:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789107010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:20,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:20,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:20,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762236550] [2023-12-15 18:57:20,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:20,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:57:20,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:20,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:57:20,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:57:20,128 INFO L87 Difference]: Start difference. First operand 24732 states and 27664 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:25,328 INFO L93 Difference]: Finished difference Result 91375 states and 102286 transitions. [2023-12-15 18:57:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:57:25,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 323 [2023-12-15 18:57:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:25,403 INFO L225 Difference]: With dead ends: 91375 [2023-12-15 18:57:25,404 INFO L226 Difference]: Without dead ends: 67431 [2023-12-15 18:57:25,447 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 [2023-12-15 18:57:25,448 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 1707 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 6637 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 7672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 6637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:25,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 806 Invalid, 7672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1035 Valid, 6637 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-15 18:57:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67431 states. [2023-12-15 18:57:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67431 to 64948. [2023-12-15 18:57:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64948 states, 64947 states have (on average 1.1045621814710456) internal successors, (71738), 64947 states have internal predecessors, (71738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64948 states to 64948 states and 71738 transitions. [2023-12-15 18:57:26,287 INFO L78 Accepts]: Start accepts. Automaton has 64948 states and 71738 transitions. Word has length 323 [2023-12-15 18:57:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:26,287 INFO L495 AbstractCegarLoop]: Abstraction has 64948 states and 71738 transitions. [2023-12-15 18:57:26,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:26,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64948 states and 71738 transitions. [2023-12-15 18:57:26,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-15 18:57:26,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:26,291 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:26,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:57:26,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:26,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash -707130468, now seen corresponding path program 1 times [2023-12-15 18:57:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:26,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069448390] [2023-12-15 18:57:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:26,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-15 18:57:26,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069448390] [2023-12-15 18:57:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069448390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:26,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:26,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:57:26,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760727750] [2023-12-15 18:57:26,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:26,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:26,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:26,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:26,510 INFO L87 Difference]: Start difference. First operand 64948 states and 71738 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:29,739 INFO L93 Difference]: Finished difference Result 142509 states and 156965 transitions. [2023-12-15 18:57:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:29,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 323 [2023-12-15 18:57:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:29,823 INFO L225 Difference]: With dead ends: 142509 [2023-12-15 18:57:29,823 INFO L226 Difference]: Without dead ends: 77562 [2023-12-15 18:57:29,838 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 [2023-12-15 18:57:29,838 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 728 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:29,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1173 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:57:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77562 states. [2023-12-15 18:57:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77562 to 75977. [2023-12-15 18:57:30,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75977 states, 75976 states have (on average 1.0951484679372434) internal successors, (83205), 75976 states have internal predecessors, (83205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75977 states to 75977 states and 83205 transitions. [2023-12-15 18:57:30,788 INFO L78 Accepts]: Start accepts. Automaton has 75977 states and 83205 transitions. Word has length 323 [2023-12-15 18:57:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:30,788 INFO L495 AbstractCegarLoop]: Abstraction has 75977 states and 83205 transitions. [2023-12-15 18:57:30,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 75977 states and 83205 transitions. [2023-12-15 18:57:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-15 18:57:30,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:30,793 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:30,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:57:30,794 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:30,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1124834510, now seen corresponding path program 1 times [2023-12-15 18:57:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772931124] [2023-12-15 18:57:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-15 18:57:32,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:32,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772931124] [2023-12-15 18:57:32,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772931124] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:57:32,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354016433] [2023-12-15 18:57:32,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:32,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:57:32,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:57:32,100 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) [2023-12-15 18:57:32,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:57:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:32,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:57:32,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:57:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-15 18:57:32,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:57:32,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354016433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:32,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:57:32,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:57:32,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265193508] [2023-12-15 18:57:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:57:32,423 INFO L87 Difference]: Start difference. First operand 75977 states and 83205 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:35,211 INFO L93 Difference]: Finished difference Result 151164 states and 165616 transitions. [2023-12-15 18:57:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:35,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 352 [2023-12-15 18:57:35,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:35,299 INFO L225 Difference]: With dead ends: 151164 [2023-12-15 18:57:35,299 INFO L226 Difference]: Without dead ends: 75975 [2023-12-15 18:57:35,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:57:35,336 INFO L413 NwaCegarLoop]: 1339 mSDtfsCounter, 1112 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:35,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1417 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:57:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75975 states. [2023-12-15 18:57:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75975 to 75974. [2023-12-15 18:57:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75974 states, 75973 states have (on average 1.075869058744554) internal successors, (81737), 75973 states have internal predecessors, (81737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75974 states to 75974 states and 81737 transitions. [2023-12-15 18:57:36,301 INFO L78 Accepts]: Start accepts. Automaton has 75974 states and 81737 transitions. Word has length 352 [2023-12-15 18:57:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:36,302 INFO L495 AbstractCegarLoop]: Abstraction has 75974 states and 81737 transitions. [2023-12-15 18:57:36,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 75974 states and 81737 transitions. [2023-12-15 18:57:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-15 18:57:36,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:36,338 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, 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, 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] [2023-12-15 18:57:36,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:57:36,538 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,SelfDestructingSolverStorable11 [2023-12-15 18:57:36,539 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:36,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1949962769, now seen corresponding path program 1 times [2023-12-15 18:57:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012248448] [2023-12-15 18:57:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:36,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-15 18:57:36,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012248448] [2023-12-15 18:57:36,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012248448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:36,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:36,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:36,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064849652] [2023-12-15 18:57:36,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:36,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:36,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:36,868 INFO L87 Difference]: Start difference. First operand 75974 states and 81737 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:40,288 INFO L93 Difference]: Finished difference Result 171630 states and 185875 transitions. [2023-12-15 18:57:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 382 [2023-12-15 18:57:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:40,402 INFO L225 Difference]: With dead ends: 171630 [2023-12-15 18:57:40,402 INFO L226 Difference]: Without dead ends: 96444 [2023-12-15 18:57:40,429 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 [2023-12-15 18:57:40,430 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 890 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:40,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 879 Invalid, 3347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:57:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96444 states. [2023-12-15 18:57:41,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96444 to 93278. [2023-12-15 18:57:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93278 states, 93277 states have (on average 1.0808237829261234) internal successors, (100816), 93277 states have internal predecessors, (100816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93278 states to 93278 states and 100816 transitions. [2023-12-15 18:57:41,477 INFO L78 Accepts]: Start accepts. Automaton has 93278 states and 100816 transitions. Word has length 382 [2023-12-15 18:57:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:41,478 INFO L495 AbstractCegarLoop]: Abstraction has 93278 states and 100816 transitions. [2023-12-15 18:57:41,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 93278 states and 100816 transitions. [2023-12-15 18:57:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-15 18:57:41,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:41,499 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, 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, 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] [2023-12-15 18:57:41,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:57:41,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:41,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:41,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2093857876, now seen corresponding path program 1 times [2023-12-15 18:57:41,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:41,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676942249] [2023-12-15 18:57:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:41,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-15 18:57:41,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:41,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676942249] [2023-12-15 18:57:41,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676942249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:41,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:41,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347768091] [2023-12-15 18:57:41,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:41,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:41,864 INFO L87 Difference]: Start difference. First operand 93278 states and 100816 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:45,380 INFO L93 Difference]: Finished difference Result 185776 states and 200857 transitions. [2023-12-15 18:57:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:45,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 420 [2023-12-15 18:57:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:45,491 INFO L225 Difference]: With dead ends: 185776 [2023-12-15 18:57:45,491 INFO L226 Difference]: Without dead ends: 93286 [2023-12-15 18:57:45,542 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 [2023-12-15 18:57:45,542 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 794 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:45,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1838 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:57:45,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93286 states. [2023-12-15 18:57:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93286 to 92481. [2023-12-15 18:57:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92481 states, 92480 states have (on average 1.0581206747404843) internal successors, (97855), 92480 states have internal predecessors, (97855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92481 states to 92481 states and 97855 transitions. [2023-12-15 18:57:46,611 INFO L78 Accepts]: Start accepts. Automaton has 92481 states and 97855 transitions. Word has length 420 [2023-12-15 18:57:46,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:46,612 INFO L495 AbstractCegarLoop]: Abstraction has 92481 states and 97855 transitions. [2023-12-15 18:57:46,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:57:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 92481 states and 97855 transitions. [2023-12-15 18:57:46,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-15 18:57:46,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:46,619 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:46,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:57:46,619 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:46,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash -644646087, now seen corresponding path program 1 times [2023-12-15 18:57:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:46,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941853076] [2023-12-15 18:57:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-15 18:57:47,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:47,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941853076] [2023-12-15 18:57:47,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941853076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:57:47,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065607174] [2023-12-15 18:57:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:47,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:57:47,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:57:47,981 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) [2023-12-15 18:57:48,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:57:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:48,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:57:48,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:57:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-15 18:57:48,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:57:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065607174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:48,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:57:48,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:57:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449774857] [2023-12-15 18:57:48,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:48,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:48,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:57:48,312 INFO L87 Difference]: Start difference. First operand 92481 states and 97855 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 18:57:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:48,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:57:48,539 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:48,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 6 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:57:48,540 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:57:48,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:57:48,547 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:57:48,564 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:57:48,740 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,SelfDestructingSolverStorable14 [2023-12-15 18:57:48,742 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (92481states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (767 states constructed, input type IntersectNwa). [2023-12-15 18:57:48,745 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:48,747 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:57:48,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:57:48 BoogieIcfgContainer [2023-12-15 18:57:48,748 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:57:48,748 INFO L158 Benchmark]: Toolchain (without parser) took 62476.09ms. Allocated memory was 219.2MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 152.0MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-15 18:57:48,748 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 181.4MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:57:48,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1473.66ms. Allocated memory is still 219.2MB. Free memory was 151.7MB in the beginning and 143.4MB in the end (delta: 8.2MB). Peak memory consumption was 89.3MB. Max. memory is 8.0GB. [2023-12-15 18:57:48,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 388.97ms. Allocated memory was 219.2MB in the beginning and 351.3MB in the end (delta: 132.1MB). Free memory was 143.4MB in the beginning and 199.5MB in the end (delta: -56.1MB). Peak memory consumption was 107.5MB. Max. memory is 8.0GB. [2023-12-15 18:57:48,749 INFO L158 Benchmark]: Boogie Preprocessor took 647.21ms. Allocated memory is still 351.3MB. Free memory was 199.5MB in the beginning and 175.9MB in the end (delta: 23.6MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. [2023-12-15 18:57:48,749 INFO L158 Benchmark]: RCFGBuilder took 3644.17ms. Allocated memory was 351.3MB in the beginning and 679.5MB in the end (delta: 328.2MB). Free memory was 175.9MB in the beginning and 386.7MB in the end (delta: -210.8MB). Peak memory consumption was 371.7MB. Max. memory is 8.0GB. [2023-12-15 18:57:48,749 INFO L158 Benchmark]: TraceAbstraction took 56315.98ms. Allocated memory was 679.5MB in the beginning and 3.9GB in the end (delta: 3.2GB). Free memory was 385.7MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 776.7MB. Max. memory is 8.0GB. [2023-12-15 18:57:48,750 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 181.4MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1473.66ms. Allocated memory is still 219.2MB. Free memory was 151.7MB in the beginning and 143.4MB in the end (delta: 8.2MB). Peak memory consumption was 89.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 388.97ms. Allocated memory was 219.2MB in the beginning and 351.3MB in the end (delta: 132.1MB). Free memory was 143.4MB in the beginning and 199.5MB in the end (delta: -56.1MB). Peak memory consumption was 107.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 647.21ms. Allocated memory is still 351.3MB. Free memory was 199.5MB in the beginning and 175.9MB in the end (delta: 23.6MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. * RCFGBuilder took 3644.17ms. Allocated memory was 351.3MB in the beginning and 679.5MB in the end (delta: 328.2MB). Free memory was 175.9MB in the beginning and 386.7MB in the end (delta: -210.8MB). Peak memory consumption was 371.7MB. Max. memory is 8.0GB. * TraceAbstraction took 56315.98ms. Allocated memory was 679.5MB in the beginning and 3.9GB in the end (delta: 3.2GB). Free memory was 385.7MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 776.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 103). Cancelled while NwaCegarLoop was constructing difference of abstraction (92481states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (767 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.3s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 43.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12461 SdHoareTripleChecker+Valid, 38.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12461 mSDsluCounter, 17857 SdHoareTripleChecker+Invalid, 32.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1902 mSDsCounter, 8478 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36820 IncrementalHoareTripleChecker+Invalid, 45298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8478 mSolverCounterUnsat, 15955 mSDtfsCounter, 36820 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93278occurred in iteration=13, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 9685 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 4461 NumberOfCodeBlocks, 4461 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 4444 ConstructedInterpolants, 0 QuantifiedInterpolants, 15654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1083 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 4061/4287 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown