/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_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:13:30,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:13:30,371 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 02:13:30,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:13:30,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:13:30,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:13:30,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:13:30,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:13:30,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:13:30,400 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:13:30,400 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:13:30,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:13:30,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:13:30,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:13:30,402 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:13:30,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:13:30,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:13:30,403 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:13:30,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:13:30,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:13:30,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:13:30,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:13:30,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:13:30,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:13:30,405 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:13:30,405 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:13:30,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:13:30,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:13:30,405 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:13:30,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:13:30,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:13:30,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:13:30,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:13:30,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:13:30,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:13:30,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:13:30,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:13:30,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:13:30,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:13:30,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:13:30,408 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:13:30,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:13:30,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:13:30,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:13:30,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:13:30,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:13:30,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:13:30,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:13:30,631 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:13:30,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label16.c [2023-12-16 02:13:31,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:13:31,981 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:13:31,982 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label16.c [2023-12-16 02:13:32,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82a31231/d013387b12ef4de283c10d826e4fff32/FLAG03c4b5c40 [2023-12-16 02:13:32,014 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82a31231/d013387b12ef4de283c10d826e4fff32 [2023-12-16 02:13:32,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:13:32,017 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:13:32,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:13:32,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:13:32,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:13:32,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:32,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b29d598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32, skipping insertion in model container [2023-12-16 02:13:32,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:32,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:13:32,258 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_label16.c[3929,3942] [2023-12-16 02:13:32,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:13:32,738 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:13:32,755 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_label16.c[3929,3942] [2023-12-16 02:13:32,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:13:32,956 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:13:32,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32 WrapperNode [2023-12-16 02:13:32,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:13:32,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:13:32,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:13:32,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:13:32,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,170 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-16 02:13:33,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:13:33,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:13:33,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:13:33,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:13:33,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,413 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 02:13:33,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:13:33,614 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:13:33,614 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:13:33,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:13:33,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (1/1) ... [2023-12-16 02:13:33,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:13:33,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:13:33,664 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 02:13:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:13:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:13:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:13:33,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:13:33,799 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 02:13:33,888 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:13:33,889 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:13:36,302 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:13:36,335 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:13:36,335 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:13:36,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:13:36 BoogieIcfgContainer [2023-12-16 02:13:36,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:13:36,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:13:36,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:13:36,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:13:36,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:13:32" (1/3) ... [2023-12-16 02:13:36,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9f50a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:13:36, skipping insertion in model container [2023-12-16 02:13:36,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:13:32" (2/3) ... [2023-12-16 02:13:36,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9f50a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:13:36, skipping insertion in model container [2023-12-16 02:13:36,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:13:36" (3/3) ... [2023-12-16 02:13:36,340 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label16.c [2023-12-16 02:13:36,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:13:36,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:13:36,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:13:36,389 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;@194fb455, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:13:36,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:13:36,393 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 02:13:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 02:13:36,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:36,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:13:36,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:36,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:36,401 INFO L85 PathProgramCache]: Analyzing trace with hash -600114276, now seen corresponding path program 1 times [2023-12-16 02:13:36,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:36,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083288812] [2023-12-16 02:13:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:36,495 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 02:13:36,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:36,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083288812] [2023-12-16 02:13:36,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083288812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:36,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:36,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:13:36,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967387487] [2023-12-16 02:13:36,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:36,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:13:36,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:13:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:13:36,517 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 02:13:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:36,564 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-16 02:13:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:13:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-16 02:13:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:36,583 INFO L225 Difference]: With dead ends: 1055 [2023-12-16 02:13:36,583 INFO L226 Difference]: Without dead ends: 526 [2023-12-16 02:13:36,589 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 02:13:36,592 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 02:13:36,593 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 02:13:36,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-16 02:13:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-16 02:13:36,634 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 02:13:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-16 02:13:36,637 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 24 [2023-12-16 02:13:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:36,638 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-16 02:13:36,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 02:13:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-16 02:13:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 02:13:36,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:36,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:13:36,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:13:36,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:36,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1584642575, now seen corresponding path program 1 times [2023-12-16 02:13:36,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:36,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229687561] [2023-12-16 02:13:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:36,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:36,727 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 02:13:36,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229687561] [2023-12-16 02:13:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229687561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:36,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:36,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:13:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799414083] [2023-12-16 02:13:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:36,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:13:36,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:13:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:13:36,729 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 02:13:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:38,746 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2023-12-16 02:13:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:13:38,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-16 02:13:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:38,749 INFO L225 Difference]: With dead ends: 1501 [2023-12-16 02:13:38,749 INFO L226 Difference]: Without dead ends: 976 [2023-12-16 02:13:38,750 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 02:13:38,751 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 447 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 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, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:38,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:13:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-16 02:13:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-16 02:13:38,769 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 02:13:38,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-16 02:13:38,771 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 24 [2023-12-16 02:13:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:38,771 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-16 02:13:38,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 02:13:38,771 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-16 02:13:38,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 02:13:38,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:38,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:13:38,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:38,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1549878346, now seen corresponding path program 1 times [2023-12-16 02:13:38,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360156689] [2023-12-16 02:13:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:13:39,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:39,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360156689] [2023-12-16 02:13:39,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360156689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:39,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:39,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:13:39,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338905693] [2023-12-16 02:13:39,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:39,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:13:39,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:13:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:13:39,013 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:13:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:41,109 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2023-12-16 02:13:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:13:41,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-16 02:13:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:41,115 INFO L225 Difference]: With dead ends: 2812 [2023-12-16 02:13:41,115 INFO L226 Difference]: Without dead ends: 1843 [2023-12-16 02:13:41,119 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 02:13:41,123 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:41,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:13:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-16 02:13:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2023-12-16 02:13:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states 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 02:13:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2023-12-16 02:13:41,173 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 91 [2023-12-16 02:13:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:41,176 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2023-12-16 02:13:41,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:13:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2023-12-16 02:13:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 02:13:41,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:41,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:41,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:13:41,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:41,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash 886024516, now seen corresponding path program 1 times [2023-12-16 02:13:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:41,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389663151] [2023-12-16 02:13:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:41,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:13:41,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389663151] [2023-12-16 02:13:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389663151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:41,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:13:41,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441986795] [2023-12-16 02:13:41,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:41,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:13:41,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:13:41,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:13:41,424 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 02:13:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:44,410 INFO L93 Difference]: Finished difference Result 6766 states and 9258 transitions. [2023-12-16 02:13:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:13:44,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-16 02:13:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:44,437 INFO L225 Difference]: With dead ends: 6766 [2023-12-16 02:13:44,437 INFO L226 Difference]: Without dead ends: 4927 [2023-12-16 02:13:44,443 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 02:13:44,444 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 943 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:44,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 283 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2517 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 02:13:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2023-12-16 02:13:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 4874. [2023-12-16 02:13:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 1.2866817155756207) internal successors, (6270), 4873 states have internal predecessors, (6270), 0 states have call successors, (0), 0 states 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 02:13:44,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6270 transitions. [2023-12-16 02:13:44,511 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6270 transitions. Word has length 94 [2023-12-16 02:13:44,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:44,512 INFO L495 AbstractCegarLoop]: Abstraction has 4874 states and 6270 transitions. [2023-12-16 02:13:44,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 02:13:44,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6270 transitions. [2023-12-16 02:13:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 02:13:44,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:44,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:13:44,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:13:44,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:44,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1151183748, now seen corresponding path program 1 times [2023-12-16 02:13:44,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:44,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082630329] [2023-12-16 02:13:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-16 02:13:44,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:44,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082630329] [2023-12-16 02:13:44,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082630329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:44,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:44,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:13:44,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102698484] [2023-12-16 02:13:44,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:44,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:13:44,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:13:44,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:13:44,713 INFO L87 Difference]: Start difference. First operand 4874 states and 6270 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 02:13:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:46,334 INFO L93 Difference]: Finished difference Result 14435 states and 18543 transitions. [2023-12-16 02:13:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:13:46,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 163 [2023-12-16 02:13:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:46,356 INFO L225 Difference]: With dead ends: 14435 [2023-12-16 02:13:46,356 INFO L226 Difference]: Without dead ends: 8276 [2023-12-16 02:13:46,364 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 02:13:46,367 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:46,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:13:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2023-12-16 02:13:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6575. [2023-12-16 02:13:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.179342865835108) internal successors, (7753), 6574 states have internal predecessors, (7753), 0 states have call successors, (0), 0 states 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 02:13:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 7753 transitions. [2023-12-16 02:13:46,471 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 7753 transitions. Word has length 163 [2023-12-16 02:13:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:46,472 INFO L495 AbstractCegarLoop]: Abstraction has 6575 states and 7753 transitions. [2023-12-16 02:13:46,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 02:13:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 7753 transitions. [2023-12-16 02:13:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-16 02:13:46,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:46,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:13:46,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:13:46,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:46,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash 685131150, now seen corresponding path program 1 times [2023-12-16 02:13:46,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:46,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75262888] [2023-12-16 02:13:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:46,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:13:46,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:46,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75262888] [2023-12-16 02:13:46,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75262888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:46,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:46,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:13:46,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421264580] [2023-12-16 02:13:46,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:46,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:13:46,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:46,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:13:46,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:13:46,619 INFO L87 Difference]: Start difference. First operand 6575 states and 7753 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 02:13:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:48,199 INFO L93 Difference]: Finished difference Result 16559 states and 19930 transitions. [2023-12-16 02:13:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:13:48,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2023-12-16 02:13:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:48,232 INFO L225 Difference]: With dead ends: 16559 [2023-12-16 02:13:48,232 INFO L226 Difference]: Without dead ends: 9985 [2023-12-16 02:13:48,239 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 02:13:48,241 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:48,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 798 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:13:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2023-12-16 02:13:48,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9985. [2023-12-16 02:13:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9985 states, 9984 states have (on average 1.1696714743589745) internal successors, (11678), 9984 states have internal predecessors, (11678), 0 states have call successors, (0), 0 states 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 02:13:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9985 states to 9985 states and 11678 transitions. [2023-12-16 02:13:48,358 INFO L78 Accepts]: Start accepts. Automaton has 9985 states and 11678 transitions. Word has length 176 [2023-12-16 02:13:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:48,358 INFO L495 AbstractCegarLoop]: Abstraction has 9985 states and 11678 transitions. [2023-12-16 02:13:48,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 02:13:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9985 states and 11678 transitions. [2023-12-16 02:13:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-16 02:13:48,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:48,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:13:48,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:13:48,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:48,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1371372173, now seen corresponding path program 1 times [2023-12-16 02:13:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:48,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859037878] [2023-12-16 02:13:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-16 02:13:48,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:48,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859037878] [2023-12-16 02:13:48,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859037878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:48,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:48,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:13:48,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666891637] [2023-12-16 02:13:48,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:48,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:13:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:48,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:13:48,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:13:48,472 INFO L87 Difference]: Start difference. First operand 9985 states and 11678 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 02:13:50,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:50,256 INFO L93 Difference]: Finished difference Result 25066 states and 29586 transitions. [2023-12-16 02:13:50,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:13:50,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 178 [2023-12-16 02:13:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:50,278 INFO L225 Difference]: With dead ends: 25066 [2023-12-16 02:13:50,279 INFO L226 Difference]: Without dead ends: 15082 [2023-12-16 02:13:50,286 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 02:13:50,289 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 428 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:50,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 484 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:13:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15082 states. [2023-12-16 02:13:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15082 to 10383. [2023-12-16 02:13:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10383 states, 10382 states have (on average 1.1651897514929686) internal successors, (12097), 10382 states have internal predecessors, (12097), 0 states have call successors, (0), 0 states 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 02:13:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10383 states to 10383 states and 12097 transitions. [2023-12-16 02:13:50,424 INFO L78 Accepts]: Start accepts. Automaton has 10383 states and 12097 transitions. Word has length 178 [2023-12-16 02:13:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:50,424 INFO L495 AbstractCegarLoop]: Abstraction has 10383 states and 12097 transitions. [2023-12-16 02:13:50,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 02:13:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 10383 states and 12097 transitions. [2023-12-16 02:13:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-16 02:13:50,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:50,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:13:50,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:13:50,427 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:50,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:50,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1851122065, now seen corresponding path program 1 times [2023-12-16 02:13:50,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:50,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898473055] [2023-12-16 02:13:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:50,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-16 02:13:50,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:50,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898473055] [2023-12-16 02:13:50,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898473055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:50,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:50,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:13:50,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967403841] [2023-12-16 02:13:50,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:50,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:13:50,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:50,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:13:50,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:13:50,543 INFO L87 Difference]: Start difference. First operand 10383 states and 12097 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 02:13:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:52,300 INFO L93 Difference]: Finished difference Result 25873 states and 30416 transitions. [2023-12-16 02:13:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:13:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 191 [2023-12-16 02:13:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:52,324 INFO L225 Difference]: With dead ends: 25873 [2023-12-16 02:13:52,324 INFO L226 Difference]: Without dead ends: 15491 [2023-12-16 02:13:52,334 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 02:13:52,335 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 452 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:52,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 446 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:13:52,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15491 states. [2023-12-16 02:13:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15491 to 13777. [2023-12-16 02:13:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13777 states, 13776 states have (on average 1.166521486643438) internal successors, (16070), 13776 states have internal predecessors, (16070), 0 states have call successors, (0), 0 states 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 02:13:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 16070 transitions. [2023-12-16 02:13:52,553 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 16070 transitions. Word has length 191 [2023-12-16 02:13:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:52,553 INFO L495 AbstractCegarLoop]: Abstraction has 13777 states and 16070 transitions. [2023-12-16 02:13:52,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 02:13:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 16070 transitions. [2023-12-16 02:13:52,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-16 02:13:52,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:52,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:13:52,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 02:13:52,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:52,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:52,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2061680685, now seen corresponding path program 1 times [2023-12-16 02:13:52,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:52,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065593908] [2023-12-16 02:13:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:52,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-16 02:13:52,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:52,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065593908] [2023-12-16 02:13:52,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065593908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:52,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:52,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:13:52,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469550201] [2023-12-16 02:13:52,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:52,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:13:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:52,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:13:52,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:13:52,684 INFO L87 Difference]: Start difference. First operand 13777 states and 16070 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 02:13:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:54,913 INFO L93 Difference]: Finished difference Result 32233 states and 37931 transitions. [2023-12-16 02:13:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:13:54,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 223 [2023-12-16 02:13:54,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:54,940 INFO L225 Difference]: With dead ends: 32233 [2023-12-16 02:13:54,940 INFO L226 Difference]: Without dead ends: 18457 [2023-12-16 02:13:54,953 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 02:13:54,954 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 466 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:54,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 414 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 02:13:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18457 states. [2023-12-16 02:13:55,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18457 to 17175. [2023-12-16 02:13:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17175 states, 17174 states have (on average 1.1833585652730871) internal successors, (20323), 17174 states have internal predecessors, (20323), 0 states have call successors, (0), 0 states 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 02:13:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17175 states to 17175 states and 20323 transitions. [2023-12-16 02:13:55,135 INFO L78 Accepts]: Start accepts. Automaton has 17175 states and 20323 transitions. Word has length 223 [2023-12-16 02:13:55,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:55,136 INFO L495 AbstractCegarLoop]: Abstraction has 17175 states and 20323 transitions. [2023-12-16 02:13:55,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 02:13:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 17175 states and 20323 transitions. [2023-12-16 02:13:55,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-16 02:13:55,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:55,138 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:13:55,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:13:55,139 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:55,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:55,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1743968733, now seen corresponding path program 1 times [2023-12-16 02:13:55,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:55,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329290762] [2023-12-16 02:13:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:55,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:13:55,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329290762] [2023-12-16 02:13:55,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329290762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:13:55,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:13:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:13:55,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398545621] [2023-12-16 02:13:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:55,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:13:55,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:13:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:13:55,438 INFO L87 Difference]: Start difference. First operand 17175 states and 20323 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:13:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:13:57,402 INFO L93 Difference]: Finished difference Result 39056 states and 46414 transitions. [2023-12-16 02:13:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:13:57,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2023-12-16 02:13:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:13:57,428 INFO L225 Difference]: With dead ends: 39056 [2023-12-16 02:13:57,428 INFO L226 Difference]: Without dead ends: 21457 [2023-12-16 02:13:57,443 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 02:13:57,443 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 356 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:13:57,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 861 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:13:57,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21457 states. [2023-12-16 02:13:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21457 to 21024. [2023-12-16 02:13:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21024 states, 21023 states have (on average 1.1667221614422298) internal successors, (24528), 21023 states have internal predecessors, (24528), 0 states have call successors, (0), 0 states 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 02:13:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21024 states to 21024 states and 24528 transitions. [2023-12-16 02:13:57,637 INFO L78 Accepts]: Start accepts. Automaton has 21024 states and 24528 transitions. Word has length 240 [2023-12-16 02:13:57,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:13:57,638 INFO L495 AbstractCegarLoop]: Abstraction has 21024 states and 24528 transitions. [2023-12-16 02:13:57,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:13:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 21024 states and 24528 transitions. [2023-12-16 02:13:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-16 02:13:57,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:13:57,640 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:13:57,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 02:13:57,640 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:13:57,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:13:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -833376442, now seen corresponding path program 1 times [2023-12-16 02:13:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:13:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791614191] [2023-12-16 02:13:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:13:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 184 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-16 02:13:57,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:13:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791614191] [2023-12-16 02:13:57,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791614191] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:13:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013838076] [2023-12-16 02:13:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:13:57,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:13:57,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:13:57,870 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 02:13:57,932 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 02:13:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:13:58,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:13:58,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:13:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 184 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-16 02:13:58,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:13:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-16 02:13:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013838076] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:13:58,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:13:58,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-16 02:13:58,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198727639] [2023-12-16 02:13:58,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:13:58,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:13:58,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:13:58,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:13:58,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:13:58,583 INFO L87 Difference]: Start difference. First operand 21024 states and 24528 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 02:14:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:02,006 INFO L93 Difference]: Finished difference Result 59099 states and 69387 transitions. [2023-12-16 02:14:02,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:14:02,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2023-12-16 02:14:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:02,046 INFO L225 Difference]: With dead ends: 59099 [2023-12-16 02:14:02,046 INFO L226 Difference]: Without dead ends: 37212 [2023-12-16 02:14:02,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 493 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 02:14:02,065 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1060 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 1214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1214 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:02,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 140 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1214 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 02:14:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37212 states. [2023-12-16 02:14:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37212 to 35505. [2023-12-16 02:14:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35505 states, 35504 states have (on average 1.159108832807571) internal successors, (41153), 35504 states have internal predecessors, (41153), 0 states have call successors, (0), 0 states 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 02:14:02,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35505 states to 35505 states and 41153 transitions. [2023-12-16 02:14:02,536 INFO L78 Accepts]: Start accepts. Automaton has 35505 states and 41153 transitions. Word has length 248 [2023-12-16 02:14:02,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:02,536 INFO L495 AbstractCegarLoop]: Abstraction has 35505 states and 41153 transitions. [2023-12-16 02:14:02,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 02:14:02,536 INFO L276 IsEmpty]: Start isEmpty. Operand 35505 states and 41153 transitions. [2023-12-16 02:14:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-16 02:14:02,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:02,538 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:02,557 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 02:14:02,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 02:14:02,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:02,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1940912913, now seen corresponding path program 1 times [2023-12-16 02:14:02,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:02,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675269237] [2023-12-16 02:14:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-16 02:14:03,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675269237] [2023-12-16 02:14:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675269237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:03,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:03,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:14:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141849019] [2023-12-16 02:14:03,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:03,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:14:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:03,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:14:03,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:14:03,069 INFO L87 Difference]: Start difference. First operand 35505 states and 41153 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:14:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:04,841 INFO L93 Difference]: Finished difference Result 78653 states and 91328 transitions. [2023-12-16 02:14:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:14:04,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2023-12-16 02:14:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:04,904 INFO L225 Difference]: With dead ends: 78653 [2023-12-16 02:14:04,904 INFO L226 Difference]: Without dead ends: 42722 [2023-12-16 02:14:04,924 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 02:14:04,924 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 380 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:04,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 847 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:14:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42722 states. [2023-12-16 02:14:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42722 to 42722. [2023-12-16 02:14:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42722 states, 42721 states have (on average 1.117085274221109) internal successors, (47723), 42721 states have internal predecessors, (47723), 0 states have call successors, (0), 0 states 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 02:14:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42722 states to 42722 states and 47723 transitions. [2023-12-16 02:14:05,448 INFO L78 Accepts]: Start accepts. Automaton has 42722 states and 47723 transitions. Word has length 256 [2023-12-16 02:14:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:05,449 INFO L495 AbstractCegarLoop]: Abstraction has 42722 states and 47723 transitions. [2023-12-16 02:14:05,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:14:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 42722 states and 47723 transitions. [2023-12-16 02:14:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-16 02:14:05,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:05,458 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 02:14:05,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:05,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:05,459 INFO L85 PathProgramCache]: Analyzing trace with hash -542220727, now seen corresponding path program 1 times [2023-12-16 02:14:05,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:05,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499903780] [2023-12-16 02:14:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 325 proven. 73 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-16 02:14:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499903780] [2023-12-16 02:14:05,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499903780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:14:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460790844] [2023-12-16 02:14:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:05,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:14:05,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:14:05,917 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 02:14:05,918 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 02:14:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:06,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:14:06,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:14:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 325 proven. 73 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-16 02:14:06,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:14:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-16 02:14:06,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460790844] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:14:06,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:14:06,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-16 02:14:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471175093] [2023-12-16 02:14:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:14:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:06,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:14:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:14:06,535 INFO L87 Difference]: Start difference. First operand 42722 states and 47723 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 02:14:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:09,571 INFO L93 Difference]: Finished difference Result 101642 states and 113663 transitions. [2023-12-16 02:14:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:14:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 322 [2023-12-16 02:14:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:09,642 INFO L225 Difference]: With dead ends: 101642 [2023-12-16 02:14:09,642 INFO L226 Difference]: Without dead ends: 58492 [2023-12-16 02:14:09,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 641 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 02:14:09,666 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 879 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:09,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 169 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 02:14:09,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58492 states. [2023-12-16 02:14:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58492 to 55939. [2023-12-16 02:14:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55939 states, 55938 states have (on average 1.121062605026994) internal successors, (62710), 55938 states have internal predecessors, (62710), 0 states have call successors, (0), 0 states 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 02:14:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55939 states to 55939 states and 62710 transitions. [2023-12-16 02:14:10,437 INFO L78 Accepts]: Start accepts. Automaton has 55939 states and 62710 transitions. Word has length 322 [2023-12-16 02:14:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:10,437 INFO L495 AbstractCegarLoop]: Abstraction has 55939 states and 62710 transitions. [2023-12-16 02:14:10,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 02:14:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 55939 states and 62710 transitions. [2023-12-16 02:14:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-16 02:14:10,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:10,465 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:10,483 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 02:14:10,670 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,SelfDestructingSolverStorable12 [2023-12-16 02:14:10,671 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:10,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2141000439, now seen corresponding path program 1 times [2023-12-16 02:14:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:10,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418261232] [2023-12-16 02:14:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-16 02:14:10,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:10,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418261232] [2023-12-16 02:14:10,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418261232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:10,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:10,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:14:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936976998] [2023-12-16 02:14:10,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:10,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:14:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:14:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:14:10,999 INFO L87 Difference]: Start difference. First operand 55939 states and 62710 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 02:14:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:12,750 INFO L93 Difference]: Finished difference Result 121240 states and 135986 transitions. [2023-12-16 02:14:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:14:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 419 [2023-12-16 02:14:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:12,990 INFO L225 Difference]: With dead ends: 121240 [2023-12-16 02:14:12,990 INFO L226 Difference]: Without dead ends: 64877 [2023-12-16 02:14:13,014 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 02:14:13,017 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 339 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:13,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 771 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:14:13,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64877 states. [2023-12-16 02:14:13,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64877 to 53349. [2023-12-16 02:14:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53349 states, 53348 states have (on average 1.107689135487741) internal successors, (59093), 53348 states have internal predecessors, (59093), 0 states have call successors, (0), 0 states 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 02:14:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53349 states to 53349 states and 59093 transitions. [2023-12-16 02:14:13,753 INFO L78 Accepts]: Start accepts. Automaton has 53349 states and 59093 transitions. Word has length 419 [2023-12-16 02:14:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:13,754 INFO L495 AbstractCegarLoop]: Abstraction has 53349 states and 59093 transitions. [2023-12-16 02:14:13,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 02:14:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 53349 states and 59093 transitions. [2023-12-16 02:14:13,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-16 02:14:13,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:13,762 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:13,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 02:14:13,762 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:13,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1277630492, now seen corresponding path program 1 times [2023-12-16 02:14:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478392019] [2023-12-16 02:14:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:13,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-16 02:14:14,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:14,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478392019] [2023-12-16 02:14:14,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478392019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:14,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:14,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:14:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432874684] [2023-12-16 02:14:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:14,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:14:14,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:14,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:14:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:14:14,150 INFO L87 Difference]: Start difference. First operand 53349 states and 59093 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 02:14:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:16,133 INFO L93 Difference]: Finished difference Result 119900 states and 132833 transitions. [2023-12-16 02:14:16,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:14:16,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 420 [2023-12-16 02:14:16,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:16,211 INFO L225 Difference]: With dead ends: 119900 [2023-12-16 02:14:16,211 INFO L226 Difference]: Without dead ends: 63989 [2023-12-16 02:14:16,232 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 02:14:16,232 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 437 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:16,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 656 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:14:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63989 states. [2023-12-16 02:14:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63989 to 61850. [2023-12-16 02:14:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61850 states, 61849 states have (on average 1.0961211984025612) internal successors, (67794), 61849 states have internal predecessors, (67794), 0 states have call successors, (0), 0 states 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 02:14:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61850 states to 61850 states and 67794 transitions. [2023-12-16 02:14:17,013 INFO L78 Accepts]: Start accepts. Automaton has 61850 states and 67794 transitions. Word has length 420 [2023-12-16 02:14:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:17,016 INFO L495 AbstractCegarLoop]: Abstraction has 61850 states and 67794 transitions. [2023-12-16 02:14:17,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 02:14:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 61850 states and 67794 transitions. [2023-12-16 02:14:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-16 02:14:17,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:17,024 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:17,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:14:17,024 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:17,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash -77684117, now seen corresponding path program 1 times [2023-12-16 02:14:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:17,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300126784] [2023-12-16 02:14:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 573 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-16 02:14:17,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:17,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300126784] [2023-12-16 02:14:17,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300126784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:17,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:17,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:14:17,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502625434] [2023-12-16 02:14:17,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:17,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:14:17,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:17,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:14:17,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:14:17,568 INFO L87 Difference]: Start difference. First operand 61850 states and 67794 transitions. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 02:14:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:19,984 INFO L93 Difference]: Finished difference Result 145470 states and 159570 transitions. [2023-12-16 02:14:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:14:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 424 [2023-12-16 02:14:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:20,080 INFO L225 Difference]: With dead ends: 145470 [2023-12-16 02:14:20,080 INFO L226 Difference]: Without dead ends: 83621 [2023-12-16 02:14:20,118 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 02:14:20,119 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 827 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:20,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 204 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 02:14:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83621 states. [2023-12-16 02:14:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83621 to 78924. [2023-12-16 02:14:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78924 states, 78923 states have (on average 1.097968906402443) internal successors, (86655), 78923 states have internal predecessors, (86655), 0 states have call successors, (0), 0 states 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 02:14:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78924 states to 78924 states and 86655 transitions. [2023-12-16 02:14:21,303 INFO L78 Accepts]: Start accepts. Automaton has 78924 states and 86655 transitions. Word has length 424 [2023-12-16 02:14:21,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:21,304 INFO L495 AbstractCegarLoop]: Abstraction has 78924 states and 86655 transitions. [2023-12-16 02:14:21,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 02:14:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 78924 states and 86655 transitions. [2023-12-16 02:14:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-16 02:14:21,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:21,322 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:21,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 02:14:21,322 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:21,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1111388577, now seen corresponding path program 1 times [2023-12-16 02:14:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:21,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300643185] [2023-12-16 02:14:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:21,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-16 02:14:21,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300643185] [2023-12-16 02:14:21,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300643185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:21,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:21,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:14:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557226461] [2023-12-16 02:14:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:21,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:14:21,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:21,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:14:21,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:14:21,731 INFO L87 Difference]: Start difference. First operand 78924 states and 86655 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 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 02:14:23,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:23,499 INFO L93 Difference]: Finished difference Result 167642 states and 184227 transitions. [2023-12-16 02:14:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:14:23,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 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 443 [2023-12-16 02:14:23,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:23,615 INFO L225 Difference]: With dead ends: 167642 [2023-12-16 02:14:23,615 INFO L226 Difference]: Without dead ends: 88719 [2023-12-16 02:14:23,656 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 02:14:23,657 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 386 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:23,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 326 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:14:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88719 states. [2023-12-16 02:14:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88719 to 88285. [2023-12-16 02:14:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88285 states, 88284 states have (on average 1.095340038965158) internal successors, (96701), 88284 states have internal predecessors, (96701), 0 states have call successors, (0), 0 states 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 02:14:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88285 states to 88285 states and 96701 transitions. [2023-12-16 02:14:24,921 INFO L78 Accepts]: Start accepts. Automaton has 88285 states and 96701 transitions. Word has length 443 [2023-12-16 02:14:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:24,921 INFO L495 AbstractCegarLoop]: Abstraction has 88285 states and 96701 transitions. [2023-12-16 02:14:24,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 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 02:14:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 88285 states and 96701 transitions. [2023-12-16 02:14:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-16 02:14:24,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:24,929 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 02:14:24,929 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:24,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash -349572559, now seen corresponding path program 1 times [2023-12-16 02:14:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:24,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544799175] [2023-12-16 02:14:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-16 02:14:25,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544799175] [2023-12-16 02:14:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544799175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:25,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:25,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:14:25,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949031425] [2023-12-16 02:14:25,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:14:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:14:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:14:25,249 INFO L87 Difference]: Start difference. First operand 88285 states and 96701 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 02:14:27,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:27,066 INFO L93 Difference]: Finished difference Result 190189 states and 208576 transitions. [2023-12-16 02:14:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:14:27,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 467 [2023-12-16 02:14:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:27,186 INFO L225 Difference]: With dead ends: 190189 [2023-12-16 02:14:27,186 INFO L226 Difference]: Without dead ends: 101905 [2023-12-16 02:14:27,223 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 02:14:27,227 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 474 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:27,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 262 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 02:14:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101905 states. [2023-12-16 02:14:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101905 to 101448. [2023-12-16 02:14:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101448 states, 101447 states have (on average 1.0927972241663135) internal successors, (110861), 101447 states have internal predecessors, (110861), 0 states have call successors, (0), 0 states 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 02:14:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101448 states to 101448 states and 110861 transitions. [2023-12-16 02:14:28,641 INFO L78 Accepts]: Start accepts. Automaton has 101448 states and 110861 transitions. Word has length 467 [2023-12-16 02:14:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:28,642 INFO L495 AbstractCegarLoop]: Abstraction has 101448 states and 110861 transitions. [2023-12-16 02:14:28,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 02:14:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 101448 states and 110861 transitions. [2023-12-16 02:14:28,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-16 02:14:28,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:28,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:28,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 02:14:28,657 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:28,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash -496095149, now seen corresponding path program 1 times [2023-12-16 02:14:28,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:28,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249401171] [2023-12-16 02:14:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:28,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 02:14:29,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:29,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249401171] [2023-12-16 02:14:29,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249401171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:29,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:29,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:14:29,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096176635] [2023-12-16 02:14:29,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:29,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:14:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:29,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:14:29,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:14:29,116 INFO L87 Difference]: Start difference. First operand 101448 states and 110861 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:14:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:31,197 INFO L93 Difference]: Finished difference Result 208446 states and 227580 transitions. [2023-12-16 02:14:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:14:31,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 470 [2023-12-16 02:14:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:31,315 INFO L225 Difference]: With dead ends: 208446 [2023-12-16 02:14:31,315 INFO L226 Difference]: Without dead ends: 105292 [2023-12-16 02:14:31,358 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 02:14:31,358 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 424 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:31,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 804 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:14:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105292 states. [2023-12-16 02:14:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105292 to 102291. [2023-12-16 02:14:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102291 states, 102290 states have (on average 1.0912112620979568) internal successors, (111620), 102290 states have internal predecessors, (111620), 0 states have call successors, (0), 0 states 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 02:14:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102291 states to 102291 states and 111620 transitions. [2023-12-16 02:14:32,818 INFO L78 Accepts]: Start accepts. Automaton has 102291 states and 111620 transitions. Word has length 470 [2023-12-16 02:14:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:32,819 INFO L495 AbstractCegarLoop]: Abstraction has 102291 states and 111620 transitions. [2023-12-16 02:14:32,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:14:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 102291 states and 111620 transitions. [2023-12-16 02:14:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-12-16 02:14:32,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:32,829 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:32,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 02:14:32,829 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:32,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:32,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1505887546, now seen corresponding path program 1 times [2023-12-16 02:14:32,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:32,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790720564] [2023-12-16 02:14:32,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:32,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-16 02:14:33,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:33,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790720564] [2023-12-16 02:14:33,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790720564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:33,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:33,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:14:33,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248796539] [2023-12-16 02:14:33,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:14:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:14:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:14:33,400 INFO L87 Difference]: Start difference. First operand 102291 states and 111620 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 02:14:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:14:33,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:14:33,491 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 79 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:33,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 4 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 02:14:33,492 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:14:33,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 02:14:33,493 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (102291states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). [2023-12-16 02:14:33,496 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:33,498 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:14:33,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:14:33 BoogieIcfgContainer [2023-12-16 02:14:33,499 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:14:33,499 INFO L158 Benchmark]: Toolchain (without parser) took 61482.14ms. Allocated memory was 179.3MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 109.6MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-16 02:14:33,500 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 179.3MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:14:33,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 937.03ms. Allocated memory was 179.3MB in the beginning and 311.4MB in the end (delta: 132.1MB). Free memory was 109.3MB in the beginning and 173.1MB in the end (delta: -63.8MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. [2023-12-16 02:14:33,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 212.82ms. Allocated memory is still 311.4MB. Free memory was 173.1MB in the beginning and 109.7MB in the end (delta: 63.4MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-16 02:14:33,500 INFO L158 Benchmark]: Boogie Preprocessor took 443.12ms. Allocated memory is still 311.4MB. Free memory was 109.7MB in the beginning and 148.4MB in the end (delta: -38.7MB). Peak memory consumption was 57.2MB. Max. memory is 8.0GB. [2023-12-16 02:14:33,500 INFO L158 Benchmark]: RCFGBuilder took 2720.98ms. Allocated memory was 311.4MB in the beginning and 622.9MB in the end (delta: 311.4MB). Free memory was 147.9MB in the beginning and 383.6MB in the end (delta: -235.7MB). Peak memory consumption was 108.3MB. Max. memory is 8.0GB. [2023-12-16 02:14:33,500 INFO L158 Benchmark]: TraceAbstraction took 57162.56ms. Allocated memory was 622.9MB in the beginning and 6.3GB in the end (delta: 5.6GB). Free memory was 383.1MB in the beginning and 4.0GB in the end (delta: -3.6GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-16 02:14:33,501 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 179.3MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 937.03ms. Allocated memory was 179.3MB in the beginning and 311.4MB in the end (delta: 132.1MB). Free memory was 109.3MB in the beginning and 173.1MB in the end (delta: -63.8MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 212.82ms. Allocated memory is still 311.4MB. Free memory was 173.1MB in the beginning and 109.7MB in the end (delta: 63.4MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 443.12ms. Allocated memory is still 311.4MB. Free memory was 109.7MB in the beginning and 148.4MB in the end (delta: -38.7MB). Peak memory consumption was 57.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2720.98ms. Allocated memory was 311.4MB in the beginning and 622.9MB in the end (delta: 311.4MB). Free memory was 147.9MB in the beginning and 383.6MB in the end (delta: -235.7MB). Peak memory consumption was 108.3MB. Max. memory is 8.0GB. * TraceAbstraction took 57162.56ms. Allocated memory was 622.9MB in the beginning and 6.3GB in the end (delta: 5.6GB). Free memory was 383.1MB in the beginning and 4.0GB in the end (delta: -3.6GB). Peak memory consumption was 2.0GB. 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: 93]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 93). Cancelled while NwaCegarLoop was constructing difference of abstraction (102291states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (80 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.1s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 39.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9664 SdHoareTripleChecker+Valid, 33.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9664 mSDsluCounter, 10018 SdHoareTripleChecker+Invalid, 28.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1155 mSDsCounter, 7002 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27227 IncrementalHoareTripleChecker+Invalid, 34229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7002 mSolverCounterUnsat, 8863 mSDtfsCounter, 27227 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1194 GetRequests, 1166 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102291occurred in iteration=19, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.7s AutomataMinimizationTime, 19 MinimizatonAttempts, 36407 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 5951 NumberOfCodeBlocks, 5951 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 6497 ConstructedInterpolants, 0 QuantifiedInterpolants, 14005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 844 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 24 InterpolantComputations, 20 PerfectInterpolantSequences, 7235/7521 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 [2023-12-16 02:14:33,506 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown