/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:16:19,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:16:19,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:16:19,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:16:19,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:16:19,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:16:19,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:16:19,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:16:19,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:16:19,865 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:16:19,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:16:19,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:16:19,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:16:19,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:16:19,871 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:16:19,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:16:19,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:16:19,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:16:19,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:16:19,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:16:19,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:16:19,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:16:19,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:16:19,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:16:19,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:16:19,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:16:19,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:16:19,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:16:19,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:16:19,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:16:19,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:16:19,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:16:19,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:16:19,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:16:19,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:16:19,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:16:19,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:16:19,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:16:19,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:16:19,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:16:19,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:16:19,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:16:19,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:16:19,889 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:16:20,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:16:20,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:16:20,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:16:20,129 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:16:20,129 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:16:20,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2023-12-16 02:16:21,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:16:22,287 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:16:22,288 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2023-12-16 02:16:22,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7cf511a/96df57fe70b3457d9065957aaa2d935e/FLAGe62d4a078 [2023-12-16 02:16:22,351 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7cf511a/96df57fe70b3457d9065957aaa2d935e [2023-12-16 02:16:22,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:16:22,354 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:16:22,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:16:22,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:16:22,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:16:22,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:16:22" (1/1) ... [2023-12-16 02:16:22,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651066a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:22, skipping insertion in model container [2023-12-16 02:16:22,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:16:22" (1/1) ... [2023-12-16 02:16:22,442 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:16:22,676 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/Problem17_label53.c[2227,2240] [2023-12-16 02:16:23,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:16:23,389 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:16:23,399 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/Problem17_label53.c[2227,2240] [2023-12-16 02:16:23,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:16:23,599 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:16:23,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23 WrapperNode [2023-12-16 02:16:23,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:16:23,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:16:23,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:16:23,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:16:23,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:23,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:23,914 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-16 02:16:23,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:16:23,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:16:23,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:16:23,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:16:23,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:23,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:23,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:24,078 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]. [2023-12-16 02:16:24,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:24,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:24,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:24,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:24,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:24,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:24,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:16:24,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:16:24,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:16:24,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:16:24,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (1/1) ... [2023-12-16 02:16:24,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:16:24,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:16:24,509 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) [2023-12-16 02:16:24,524 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 [2023-12-16 02:16:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:16:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:16:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:16:24,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:16:24,608 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:16:24,610 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:16:28,043 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:16:28,126 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:16:28,127 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:16:28,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:16:28 BoogieIcfgContainer [2023-12-16 02:16:28,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:16:28,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:16:28,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:16:28,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:16:28,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:16:22" (1/3) ... [2023-12-16 02:16:28,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55232480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:16:28, skipping insertion in model container [2023-12-16 02:16:28,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:23" (2/3) ... [2023-12-16 02:16:28,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55232480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:16:28, skipping insertion in model container [2023-12-16 02:16:28,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:16:28" (3/3) ... [2023-12-16 02:16:28,176 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label53.c [2023-12-16 02:16:28,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:16:28,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:16:28,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:16:28,261 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;@2bd5a090, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:16:28,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:16:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 02:16:28,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:28,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:28,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:28,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1154787478, now seen corresponding path program 1 times [2023-12-16 02:16:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495878892] [2023-12-16 02:16:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:28,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:28,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495878892] [2023-12-16 02:16:28,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495878892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:28,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:28,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:16:28,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547946011] [2023-12-16 02:16:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:28,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:16:28,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:16:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:16:28,514 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:28,606 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-16 02:16:28,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:16:28,608 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-12-16 02:16:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:28,624 INFO L225 Difference]: With dead ends: 1055 [2023-12-16 02:16:28,625 INFO L226 Difference]: Without dead ends: 526 [2023-12-16 02:16:28,654 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 [2023-12-16 02:16:28,656 INFO L413 NwaCegarLoop]: 935 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, 935 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 [2023-12-16 02:16:28,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:16:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-16 02:16:28,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-16 02:16:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-16 02:16:28,776 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 13 [2023-12-16 02:16:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:28,776 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-16 02:16:28,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-16 02:16:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 02:16:28,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:28,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:28,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:16:28,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:28,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash 339474226, now seen corresponding path program 1 times [2023-12-16 02:16:28,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:28,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707028611] [2023-12-16 02:16:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:28,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707028611] [2023-12-16 02:16:28,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707028611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:28,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:28,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:16:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259838949] [2023-12-16 02:16:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:28,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:28,930 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:31,736 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2023-12-16 02:16:31,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:31,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-12-16 02:16:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:31,739 INFO L225 Difference]: With dead ends: 1501 [2023-12-16 02:16:31,739 INFO L226 Difference]: Without dead ends: 976 [2023-12-16 02:16:31,740 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 [2023-12-16 02:16:31,741 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 458 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:31,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 02:16:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-16 02:16:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-16 02:16:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-16 02:16:31,761 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 13 [2023-12-16 02:16:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:31,761 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-16 02:16:31,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-16 02:16:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 02:16:31,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:31,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:31,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:16:31,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:31,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash 222604954, now seen corresponding path program 1 times [2023-12-16 02:16:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:31,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368411196] [2023-12-16 02:16:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:31,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:31,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:31,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368411196] [2023-12-16 02:16:31,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368411196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:31,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:31,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:16:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190198360] [2023-12-16 02:16:31,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:31,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:31,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:31,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:31,922 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:34,696 INFO L93 Difference]: Finished difference Result 2814 states and 4381 transitions. [2023-12-16 02:16:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:34,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-16 02:16:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:34,702 INFO L225 Difference]: With dead ends: 2814 [2023-12-16 02:16:34,703 INFO L226 Difference]: Without dead ends: 1845 [2023-12-16 02:16:34,704 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 [2023-12-16 02:16:34,704 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:34,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 578 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 02:16:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2023-12-16 02:16:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1840. [2023-12-16 02:16:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3507340946166395) internal successors, (2484), 1839 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2484 transitions. [2023-12-16 02:16:34,735 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2484 transitions. Word has length 80 [2023-12-16 02:16:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:34,739 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2484 transitions. [2023-12-16 02:16:34,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2484 transitions. [2023-12-16 02:16:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 02:16:34,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:34,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:34,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:16:34,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:34,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:34,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1781845506, now seen corresponding path program 1 times [2023-12-16 02:16:34,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:34,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197562478] [2023-12-16 02:16:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:34,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:34,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197562478] [2023-12-16 02:16:34,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197562478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:34,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:34,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:16:34,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568610832] [2023-12-16 02:16:34,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:34,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:34,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:34,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:34,891 INFO L87 Difference]: Start difference. First operand 1840 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:37,677 INFO L93 Difference]: Finished difference Result 4551 states and 6284 transitions. [2023-12-16 02:16:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:37,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-16 02:16:37,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:37,686 INFO L225 Difference]: With dead ends: 4551 [2023-12-16 02:16:37,686 INFO L226 Difference]: Without dead ends: 2712 [2023-12-16 02:16:37,688 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 [2023-12-16 02:16:37,694 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 493 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:37,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 883 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 02:16:37,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2023-12-16 02:16:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2023-12-16 02:16:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3008490217792543) internal successors, (3524), 2709 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3524 transitions. [2023-12-16 02:16:37,760 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3524 transitions. Word has length 83 [2023-12-16 02:16:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:37,761 INFO L495 AbstractCegarLoop]: Abstraction has 2710 states and 3524 transitions. [2023-12-16 02:16:37,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3524 transitions. [2023-12-16 02:16:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 02:16:37,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:37,770 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:37,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:16:37,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:37,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash -952286071, now seen corresponding path program 1 times [2023-12-16 02:16:37,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:37,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951696832] [2023-12-16 02:16:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-16 02:16:38,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:38,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951696832] [2023-12-16 02:16:38,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951696832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:38,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:38,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:16:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642373930] [2023-12-16 02:16:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:38,083 INFO L87 Difference]: Start difference. First operand 2710 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:40,277 INFO L93 Difference]: Finished difference Result 7983 states and 10363 transitions. [2023-12-16 02:16:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:40,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 152 [2023-12-16 02:16:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:40,289 INFO L225 Difference]: With dead ends: 7983 [2023-12-16 02:16:40,289 INFO L226 Difference]: Without dead ends: 4420 [2023-12-16 02:16:40,293 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 [2023-12-16 02:16:40,293 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:40,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 02:16:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2023-12-16 02:16:40,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3565. [2023-12-16 02:16:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 3564 states have (on average 1.1778900112233446) internal successors, (4198), 3564 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 4198 transitions. [2023-12-16 02:16:40,339 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 4198 transitions. Word has length 152 [2023-12-16 02:16:40,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:40,339 INFO L495 AbstractCegarLoop]: Abstraction has 3565 states and 4198 transitions. [2023-12-16 02:16:40,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 4198 transitions. [2023-12-16 02:16:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-16 02:16:40,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:40,341 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:40,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:16:40,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:40,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:40,341 INFO L85 PathProgramCache]: Analyzing trace with hash 621062677, now seen corresponding path program 1 times [2023-12-16 02:16:40,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:40,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371122477] [2023-12-16 02:16:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:40,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:40,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371122477] [2023-12-16 02:16:40,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371122477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:40,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:40,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:16:40,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357153199] [2023-12-16 02:16:40,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:40,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:40,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:40,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:40,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:40,482 INFO L87 Difference]: Start difference. First operand 3565 states and 4198 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:42,306 INFO L93 Difference]: Finished difference Result 9262 states and 11077 transitions. [2023-12-16 02:16:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:42,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2023-12-16 02:16:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:42,329 INFO L225 Difference]: With dead ends: 9262 [2023-12-16 02:16:42,330 INFO L226 Difference]: Without dead ends: 5698 [2023-12-16 02:16:42,333 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 [2023-12-16 02:16:42,333 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:42,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:16:42,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5698 states. [2023-12-16 02:16:42,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5698 to 5698. [2023-12-16 02:16:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 5697 states have (on average 1.1597331929085484) internal successors, (6607), 5697 states have internal predecessors, (6607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 6607 transitions. [2023-12-16 02:16:42,414 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 6607 transitions. Word has length 165 [2023-12-16 02:16:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:42,414 INFO L495 AbstractCegarLoop]: Abstraction has 5698 states and 6607 transitions. [2023-12-16 02:16:42,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 6607 transitions. [2023-12-16 02:16:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 02:16:42,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:42,415 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:42,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:16:42,416 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:42,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:42,416 INFO L85 PathProgramCache]: Analyzing trace with hash 61230928, now seen corresponding path program 1 times [2023-12-16 02:16:42,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:42,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207799744] [2023-12-16 02:16:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:42,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:42,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:42,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207799744] [2023-12-16 02:16:42,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207799744] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:16:42,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154516857] [2023-12-16 02:16:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:42,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:16:42,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:16:42,669 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) [2023-12-16 02:16:42,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:16:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:42,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:16:42,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:16:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:42,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:16:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:43,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154516857] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:16:43,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:16:43,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-16 02:16:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395656363] [2023-12-16 02:16:43,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:43,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:16:43,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:16:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:16:43,269 INFO L87 Difference]: Start difference. First operand 5698 states and 6607 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:46,335 INFO L93 Difference]: Finished difference Result 16960 states and 19952 transitions. [2023-12-16 02:16:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:16:46,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-16 02:16:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:46,375 INFO L225 Difference]: With dead ends: 16960 [2023-12-16 02:16:46,375 INFO L226 Difference]: Without dead ends: 10383 [2023-12-16 02:16:46,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:16:46,409 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1048 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 1043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:46,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 149 Invalid, 3227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1043 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 02:16:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2023-12-16 02:16:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 10378. [2023-12-16 02:16:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10378 states, 10377 states have (on average 1.1553435482316663) internal successors, (11989), 10377 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 11989 transitions. [2023-12-16 02:16:46,653 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 11989 transitions. Word has length 167 [2023-12-16 02:16:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:46,653 INFO L495 AbstractCegarLoop]: Abstraction has 10378 states and 11989 transitions. [2023-12-16 02:16:46,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 11989 transitions. [2023-12-16 02:16:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 02:16:46,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:46,673 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:46,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 02:16:46,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:16:46,878 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:46,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1385349746, now seen corresponding path program 1 times [2023-12-16 02:16:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:46,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433360513] [2023-12-16 02:16:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 35 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:47,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433360513] [2023-12-16 02:16:47,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433360513] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:16:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381604846] [2023-12-16 02:16:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:47,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:16:47,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:16:47,232 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) [2023-12-16 02:16:47,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:16:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:47,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:16:47,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:16:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 164 proven. 73 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 02:16:47,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:16:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 02:16:47,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381604846] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:16:47,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:16:47,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2023-12-16 02:16:47,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934521592] [2023-12-16 02:16:47,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:47,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:16:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:16:47,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:16:47,771 INFO L87 Difference]: Start difference. First operand 10378 states and 11989 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:50,571 INFO L93 Difference]: Finished difference Result 28864 states and 33387 transitions. [2023-12-16 02:16:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:16:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 241 [2023-12-16 02:16:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:50,608 INFO L225 Difference]: With dead ends: 28864 [2023-12-16 02:16:50,608 INFO L226 Difference]: Without dead ends: 18487 [2023-12-16 02:16:50,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:16:50,631 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 882 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:50,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 168 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 02:16:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18487 states. [2023-12-16 02:16:50,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18487 to 18481. [2023-12-16 02:16:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18481 states, 18480 states have (on average 1.1429112554112555) internal successors, (21121), 18480 states have internal predecessors, (21121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18481 states to 18481 states and 21121 transitions. [2023-12-16 02:16:51,154 INFO L78 Accepts]: Start accepts. Automaton has 18481 states and 21121 transitions. Word has length 241 [2023-12-16 02:16:51,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:51,154 INFO L495 AbstractCegarLoop]: Abstraction has 18481 states and 21121 transitions. [2023-12-16 02:16:51,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 18481 states and 21121 transitions. [2023-12-16 02:16:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-16 02:16:51,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:51,158 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:51,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:16:51,363 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,SelfDestructingSolverStorable7 [2023-12-16 02:16:51,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:51,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1641664788, now seen corresponding path program 1 times [2023-12-16 02:16:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132389253] [2023-12-16 02:16:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:51,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-16 02:16:51,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:51,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132389253] [2023-12-16 02:16:51,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132389253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:51,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:51,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:16:51,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773372747] [2023-12-16 02:16:51,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:51,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:51,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:51,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:51,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:51,946 INFO L87 Difference]: Start difference. First operand 18481 states and 21121 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:54,211 INFO L93 Difference]: Finished difference Result 50633 states and 57337 transitions. [2023-12-16 02:16:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 346 [2023-12-16 02:16:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:54,317 INFO L225 Difference]: With dead ends: 50633 [2023-12-16 02:16:54,317 INFO L226 Difference]: Without dead ends: 32153 [2023-12-16 02:16:54,341 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 [2023-12-16 02:16:54,360 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 426 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:54,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 665 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:16:54,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32153 states. [2023-12-16 02:16:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32153 to 29569. [2023-12-16 02:16:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29569 states, 29568 states have (on average 1.1311214826839826) internal successors, (33445), 29568 states have internal predecessors, (33445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29569 states to 29569 states and 33445 transitions. [2023-12-16 02:16:54,900 INFO L78 Accepts]: Start accepts. Automaton has 29569 states and 33445 transitions. Word has length 346 [2023-12-16 02:16:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:54,900 INFO L495 AbstractCegarLoop]: Abstraction has 29569 states and 33445 transitions. [2023-12-16 02:16:54,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 29569 states and 33445 transitions. [2023-12-16 02:16:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-16 02:16:54,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:54,920 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:54,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:16:54,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:54,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1942632305, now seen corresponding path program 1 times [2023-12-16 02:16:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:54,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814169131] [2023-12-16 02:16:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:54,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-12-16 02:16:56,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814169131] [2023-12-16 02:16:56,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814169131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:56,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:56,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:16:56,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111700238] [2023-12-16 02:16:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:56,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:56,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:56,066 INFO L87 Difference]: Start difference. First operand 29569 states and 33445 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:57,973 INFO L93 Difference]: Finished difference Result 68518 states and 77906 transitions. [2023-12-16 02:16:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:57,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 347 [2023-12-16 02:16:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:58,028 INFO L225 Difference]: With dead ends: 68518 [2023-12-16 02:16:58,028 INFO L226 Difference]: Without dead ends: 38949 [2023-12-16 02:16:58,052 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 [2023-12-16 02:16:58,052 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 436 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:58,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 638 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 02:16:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38949 states. [2023-12-16 02:16:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38949 to 36817. [2023-12-16 02:16:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36817 states, 36816 states have (on average 1.1341264667535853) internal successors, (41754), 36816 states have internal predecessors, (41754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36817 states to 36817 states and 41754 transitions. [2023-12-16 02:16:58,874 INFO L78 Accepts]: Start accepts. Automaton has 36817 states and 41754 transitions. Word has length 347 [2023-12-16 02:16:58,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:58,875 INFO L495 AbstractCegarLoop]: Abstraction has 36817 states and 41754 transitions. [2023-12-16 02:16:58,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 36817 states and 41754 transitions. [2023-12-16 02:16:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-16 02:16:58,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:58,881 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:58,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 02:16:58,882 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:58,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:58,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1603318760, now seen corresponding path program 1 times [2023-12-16 02:16:58,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651186903] [2023-12-16 02:16:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:58,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 02:16:59,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:59,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651186903] [2023-12-16 02:16:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651186903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:59,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:16:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062684403] [2023-12-16 02:16:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:16:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:16:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:16:59,346 INFO L87 Difference]: Start difference. First operand 36817 states and 41754 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:02,239 INFO L93 Difference]: Finished difference Result 99667 states and 112881 transitions. [2023-12-16 02:17:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:17:02,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 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 351 [2023-12-16 02:17:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:02,345 INFO L225 Difference]: With dead ends: 99667 [2023-12-16 02:17:02,345 INFO L226 Difference]: Without dead ends: 62851 [2023-12-16 02:17:02,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:17:02,384 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 826 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:02,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 189 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 02:17:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62851 states. [2023-12-16 02:17:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62851 to 57735. [2023-12-16 02:17:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57735 states, 57734 states have (on average 1.1359684068313298) internal successors, (65584), 57734 states have internal predecessors, (65584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57735 states to 57735 states and 65584 transitions. [2023-12-16 02:17:03,686 INFO L78 Accepts]: Start accepts. Automaton has 57735 states and 65584 transitions. Word has length 351 [2023-12-16 02:17:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:03,686 INFO L495 AbstractCegarLoop]: Abstraction has 57735 states and 65584 transitions. [2023-12-16 02:17:03,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:03,686 INFO L276 IsEmpty]: Start isEmpty. Operand 57735 states and 65584 transitions. [2023-12-16 02:17:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-16 02:17:03,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:03,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:03,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 02:17:03,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:03,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1952295752, now seen corresponding path program 1 times [2023-12-16 02:17:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73749237] [2023-12-16 02:17:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:17:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73749237] [2023-12-16 02:17:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73749237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:04,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566552267] [2023-12-16 02:17:04,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:17:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:04,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:17:04,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:17:04,168 INFO L87 Difference]: Start difference. First operand 57735 states and 65584 transitions. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:07,585 INFO L93 Difference]: Finished difference Result 138520 states and 157085 transitions. [2023-12-16 02:17:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:17:07,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 [2023-12-16 02:17:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:07,674 INFO L225 Difference]: With dead ends: 138520 [2023-12-16 02:17:07,675 INFO L226 Difference]: Without dead ends: 78657 [2023-12-16 02:17:07,722 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 [2023-12-16 02:17:07,723 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 557 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:07,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 396 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 02:17:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78657 states. [2023-12-16 02:17:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78657 to 77347. [2023-12-16 02:17:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77347 states, 77346 states have (on average 1.1266904558736068) internal successors, (87145), 77346 states have internal predecessors, (87145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77347 states to 77347 states and 87145 transitions. [2023-12-16 02:17:09,252 INFO L78 Accepts]: Start accepts. Automaton has 77347 states and 87145 transitions. Word has length 352 [2023-12-16 02:17:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:09,280 INFO L495 AbstractCegarLoop]: Abstraction has 77347 states and 87145 transitions. [2023-12-16 02:17:09,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 77347 states and 87145 transitions. [2023-12-16 02:17:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-16 02:17:09,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:09,296 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-16 02:17:09,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 02:17:09,297 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:09,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1963005406, now seen corresponding path program 1 times [2023-12-16 02:17:09,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:09,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446308432] [2023-12-16 02:17:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:09,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 311 proven. 82 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 02:17:10,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446308432] [2023-12-16 02:17:10,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446308432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:17:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156212927] [2023-12-16 02:17:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:10,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:17:10,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:17:10,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:17:10,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:17:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:10,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 02:17:10,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:17:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 311 proven. 82 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 02:17:11,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:17:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 392 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 02:17:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156212927] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:17:13,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 02:17:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-12-16 02:17:13,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853879217] [2023-12-16 02:17:13,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 02:17:13,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 02:17:13,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 02:17:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:17:13,289 INFO L87 Difference]: Start difference. First operand 77347 states and 87145 transitions. Second operand has 10 states, 10 states have (on average 61.5) internal successors, (615), 9 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:19,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:19,529 INFO L93 Difference]: Finished difference Result 171923 states and 193610 transitions. [2023-12-16 02:17:19,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 02:17:19,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 61.5) internal successors, (615), 9 states have internal predecessors, (615), 0 states have call successors, (0), 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 366 [2023-12-16 02:17:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:19,647 INFO L225 Difference]: With dead ends: 171923 [2023-12-16 02:17:19,647 INFO L226 Difference]: Without dead ends: 94577 [2023-12-16 02:17:19,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-16 02:17:19,700 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 3199 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 6538 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3199 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 7478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 6538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:19,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3199 Valid, 460 Invalid, 7478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 6538 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-16 02:17:19,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94577 states. [2023-12-16 02:17:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94577 to 82426. [2023-12-16 02:17:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82426 states, 82425 states have (on average 1.1208007279344858) internal successors, (92382), 82425 states have internal predecessors, (92382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82426 states to 82426 states and 92382 transitions. [2023-12-16 02:17:20,953 INFO L78 Accepts]: Start accepts. Automaton has 82426 states and 92382 transitions. Word has length 366 [2023-12-16 02:17:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:20,953 INFO L495 AbstractCegarLoop]: Abstraction has 82426 states and 92382 transitions. [2023-12-16 02:17:20,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.5) internal successors, (615), 9 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 82426 states and 92382 transitions. [2023-12-16 02:17:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-16 02:17:20,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:20,958 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:20,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:17:21,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:17:21,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:21,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash -293468210, now seen corresponding path program 1 times [2023-12-16 02:17:21,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:21,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573289519] [2023-12-16 02:17:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:21,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-16 02:17:21,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:21,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573289519] [2023-12-16 02:17:21,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573289519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:21,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:21,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:21,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26065105] [2023-12-16 02:17:21,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:21,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:21,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:21,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:21,584 INFO L87 Difference]: Start difference. First operand 82426 states and 92382 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:24,007 INFO L93 Difference]: Finished difference Result 189116 states and 212184 transitions. [2023-12-16 02:17:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:24,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 426 [2023-12-16 02:17:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:24,168 INFO L225 Difference]: With dead ends: 189116 [2023-12-16 02:17:24,168 INFO L226 Difference]: Without dead ends: 106689 [2023-12-16 02:17:24,229 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 [2023-12-16 02:17:24,229 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 437 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:24,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 350 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 02:17:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106689 states. [2023-12-16 02:17:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106689 to 101985. [2023-12-16 02:17:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101985 states, 101984 states have (on average 1.1074972544712895) internal successors, (112947), 101984 states have internal predecessors, (112947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101985 states to 101985 states and 112947 transitions. [2023-12-16 02:17:26,695 INFO L78 Accepts]: Start accepts. Automaton has 101985 states and 112947 transitions. Word has length 426 [2023-12-16 02:17:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:26,695 INFO L495 AbstractCegarLoop]: Abstraction has 101985 states and 112947 transitions. [2023-12-16 02:17:26,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:26,695 INFO L276 IsEmpty]: Start isEmpty. Operand 101985 states and 112947 transitions. [2023-12-16 02:17:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-16 02:17:26,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:26,701 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:26,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 02:17:26,702 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:26,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1761150843, now seen corresponding path program 1 times [2023-12-16 02:17:26,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011812448] [2023-12-16 02:17:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:26,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-16 02:17:27,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011812448] [2023-12-16 02:17:27,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011812448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:27,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:27,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063284476] [2023-12-16 02:17:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:27,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:27,976 INFO L87 Difference]: Start difference. First operand 101985 states and 112947 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:29,989 INFO L93 Difference]: Finished difference Result 216326 states and 239211 transitions. [2023-12-16 02:17:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:29,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 448 [2023-12-16 02:17:29,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:30,171 INFO L225 Difference]: With dead ends: 216326 [2023-12-16 02:17:30,171 INFO L226 Difference]: Without dead ends: 114342 [2023-12-16 02:17:30,241 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 [2023-12-16 02:17:30,242 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 335 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:30,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 765 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:17:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114342 states. [2023-12-16 02:17:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114342 to 110496. [2023-12-16 02:17:31,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110496 states, 110495 states have (on average 1.101153898366442) internal successors, (121672), 110495 states have internal predecessors, (121672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110496 states to 110496 states and 121672 transitions. [2023-12-16 02:17:32,067 INFO L78 Accepts]: Start accepts. Automaton has 110496 states and 121672 transitions. Word has length 448 [2023-12-16 02:17:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:32,079 INFO L495 AbstractCegarLoop]: Abstraction has 110496 states and 121672 transitions. [2023-12-16 02:17:32,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 110496 states and 121672 transitions. [2023-12-16 02:17:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-16 02:17:32,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:32,085 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:32,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:17:32,085 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:32,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash -836688104, now seen corresponding path program 1 times [2023-12-16 02:17:32,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:32,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467291464] [2023-12-16 02:17:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-16 02:17:32,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467291464] [2023-12-16 02:17:32,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467291464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:32,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:32,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949529751] [2023-12-16 02:17:32,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:32,529 INFO L87 Difference]: Start difference. First operand 110496 states and 121672 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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... [2023-12-16 02:17:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:34,508 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 [2023-12-16 02:17:34,508 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 484 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:34,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 649 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:17:34,509 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:17:34,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 02:17:34,510 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (110496states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (155585 states constructed, input type IntersectNwa). [2023-12-16 02:17:34,528 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:34,531 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:17:34,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:17:34 BoogieIcfgContainer [2023-12-16 02:17:34,544 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:17:34,545 INFO L158 Benchmark]: Toolchain (without parser) took 72190.56ms. Allocated memory was 221.2MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 161.3MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-16 02:17:34,545 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:17:34,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1244.18ms. Allocated memory is still 221.2MB. Free memory was 161.3MB in the beginning and 110.3MB in the end (delta: 50.9MB). Peak memory consumption was 54.3MB. Max. memory is 8.0GB. [2023-12-16 02:17:34,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 313.35ms. Allocated memory is still 221.2MB. Free memory was 110.3MB in the beginning and 134.0MB in the end (delta: -23.7MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. [2023-12-16 02:17:34,546 INFO L158 Benchmark]: Boogie Preprocessor took 547.83ms. Allocated memory was 221.2MB in the beginning and 297.8MB in the end (delta: 76.5MB). Free memory was 134.0MB in the beginning and 194.8MB in the end (delta: -60.8MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-16 02:17:34,546 INFO L158 Benchmark]: RCFGBuilder took 3707.01ms. Allocated memory was 297.8MB in the beginning and 418.4MB in the end (delta: 120.6MB). Free memory was 194.8MB in the beginning and 193.8MB in the end (delta: 1.1MB). Peak memory consumption was 137.4MB. Max. memory is 8.0GB. [2023-12-16 02:17:34,547 INFO L158 Benchmark]: TraceAbstraction took 66371.77ms. Allocated memory was 418.4MB in the beginning and 4.1GB in the end (delta: 3.7GB). Free memory was 193.2MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-16 02:17:34,550 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 [2023-12-16 02:17:34,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1244.18ms. Allocated memory is still 221.2MB. Free memory was 161.3MB in the beginning and 110.3MB in the end (delta: 50.9MB). Peak memory consumption was 54.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 313.35ms. Allocated memory is still 221.2MB. Free memory was 110.3MB in the beginning and 134.0MB in the end (delta: -23.7MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 547.83ms. Allocated memory was 221.2MB in the beginning and 297.8MB in the end (delta: 76.5MB). Free memory was 134.0MB in the beginning and 194.8MB in the end (delta: -60.8MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * RCFGBuilder took 3707.01ms. Allocated memory was 297.8MB in the beginning and 418.4MB in the end (delta: 120.6MB). Free memory was 194.8MB in the beginning and 193.8MB in the end (delta: 1.1MB). Peak memory consumption was 137.4MB. Max. memory is 8.0GB. * TraceAbstraction took 66371.77ms. Allocated memory was 418.4MB in the beginning and 4.1GB in the end (delta: 3.7GB). Free memory was 193.2MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.7GB. 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: 60]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 60). Cancelled while NwaCegarLoop was constructing difference of abstraction (110496states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (155585 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.3s, OverallIterations: 16, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 42.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10870 SdHoareTripleChecker+Valid, 37.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10870 mSDsluCounter, 8643 SdHoareTripleChecker+Invalid, 31.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1315 mSDsCounter, 6031 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28303 IncrementalHoareTripleChecker+Invalid, 34334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6031 mSolverCounterUnsat, 7328 mSDtfsCounter, 28303 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1559 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110496occurred in iteration=15, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.8s AutomataMinimizationTime, 15 MinimizatonAttempts, 32722 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 4816 NumberOfCodeBlocks, 4816 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 5568 ConstructedInterpolants, 0 QuantifiedInterpolants, 19531 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1149 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 22 InterpolantComputations, 15 PerfectInterpolantSequences, 5735/6327 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