/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_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:14:47,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:14:48,054 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 02:14:48,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:14:48,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:14:48,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:14:48,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:14:48,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:14:48,084 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:14:48,087 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:14:48,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:14:48,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:14:48,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:14:48,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:14:48,089 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:14:48,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:14:48,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:14:48,089 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:14:48,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:14:48,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:14:48,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:14:48,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:14:48,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:14:48,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:14:48,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:14:48,091 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:14:48,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:14:48,091 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:14:48,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:14:48,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:14:48,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:14:48,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:14:48,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:14:48,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:14:48,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:14:48,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:14:48,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:14:48,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:14:48,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:14:48,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:14:48,093 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:14:48,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:14:48,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:14:48,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:14:48,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:14:48,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:14:48,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:14:48,334 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:14:48,335 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:14:48,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label34.c [2023-12-16 02:14:49,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:14:49,683 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:14:49,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label34.c [2023-12-16 02:14:49,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f4adbe7/172be32eb63a4c61955643a7b6d7d013/FLAG8214f260d [2023-12-16 02:14:49,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f4adbe7/172be32eb63a4c61955643a7b6d7d013 [2023-12-16 02:14:49,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:14:49,717 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:14:49,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:14:49,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:14:49,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:14:49,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:14:49" (1/1) ... [2023-12-16 02:14:49,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244811a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:49, skipping insertion in model container [2023-12-16 02:14:49,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:14:49" (1/1) ... [2023-12-16 02:14:49,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:14:49,948 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_label34.c[2983,2996] [2023-12-16 02:14:50,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:14:50,388 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:14:50,404 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_label34.c[2983,2996] [2023-12-16 02:14:50,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:14:50,609 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:14:50,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50 WrapperNode [2023-12-16 02:14:50,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:14:50,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:14:50,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:14:50,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:14:50,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:50,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:50,815 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-16 02:14:50,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:14:50,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:14:50,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:14:50,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:14:50,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:50,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:50,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:50,991 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 02:14:50,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:50,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:51,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:51,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:51,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:51,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:51,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:14:51,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:14:51,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:14:51,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:14:51,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (1/1) ... [2023-12-16 02:14:51,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:14:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:14:51,264 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 02:14:51,288 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 02:14:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:14:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:14:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:14:51,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:14:51,347 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:14:51,349 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:14:53,679 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:14:53,723 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:14:53,724 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:14:53,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:14:53 BoogieIcfgContainer [2023-12-16 02:14:53,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:14:53,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:14:53,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:14:53,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:14:53,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:14:49" (1/3) ... [2023-12-16 02:14:53,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d282c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:14:53, skipping insertion in model container [2023-12-16 02:14:53,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:14:50" (2/3) ... [2023-12-16 02:14:53,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d282c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:14:53, skipping insertion in model container [2023-12-16 02:14:53,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:14:53" (3/3) ... [2023-12-16 02:14:53,729 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label34.c [2023-12-16 02:14:53,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:14:53,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:14:53,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:14:53,783 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;@7fe6685d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:14:53,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:14:53,787 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 02:14:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 02:14:53,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:53,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:53,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:53,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:53,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1677025055, now seen corresponding path program 1 times [2023-12-16 02:14:53,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:53,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388757477] [2023-12-16 02:14:53,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:53,936 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 02:14:53,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388757477] [2023-12-16 02:14:53,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388757477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:53,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:53,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:14:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372139346] [2023-12-16 02:14:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:14:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:53,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:14:53,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:14:53,964 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 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 02:14:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:54,025 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-16 02:14:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:14:54,031 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-16 02:14:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:54,044 INFO L225 Difference]: With dead ends: 1055 [2023-12-16 02:14:54,044 INFO L226 Difference]: Without dead ends: 526 [2023-12-16 02:14:54,047 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 02:14:54,050 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 02:14:54,050 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 02:14:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-16 02:14:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-16 02:14:54,132 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 02:14:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-16 02:14:54,134 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 18 [2023-12-16 02:14:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:54,135 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-16 02:14:54,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 02:14:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-16 02:14:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 02:14:54,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:54,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:54,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:14:54,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:54,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 360829817, now seen corresponding path program 1 times [2023-12-16 02:14:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:54,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257656046] [2023-12-16 02:14:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:54,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:54,219 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 02:14:54,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:54,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257656046] [2023-12-16 02:14:54,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257656046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:54,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:54,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:14:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087656750] [2023-12-16 02:14:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:54,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:14:54,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:14:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:14:54,222 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 02:14:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:56,209 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2023-12-16 02:14:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:14:56,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-16 02:14:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:56,217 INFO L225 Difference]: With dead ends: 1499 [2023-12-16 02:14:56,217 INFO L226 Difference]: Without dead ends: 974 [2023-12-16 02:14:56,219 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 02:14:56,224 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 455 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:56,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 02:14:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-16 02:14:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2023-12-16 02:14:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states 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 02:14:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2023-12-16 02:14:56,250 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 18 [2023-12-16 02:14:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:56,250 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2023-12-16 02:14:56,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 02:14:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2023-12-16 02:14:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-16 02:14:56,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:56,254 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 02:14:56,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:14:56,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:56,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash 846381420, now seen corresponding path program 1 times [2023-12-16 02:14:56,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:56,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357263029] [2023-12-16 02:14:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:14:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:14:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:14:56,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:14:56,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357263029] [2023-12-16 02:14:56,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357263029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:14:56,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:14:56,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:14:56,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340508050] [2023-12-16 02:14:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:14:56,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:14:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:14:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:14:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:14:56,607 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 02:14:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:14:59,890 INFO L93 Difference]: Finished difference Result 3734 states and 5653 transitions. [2023-12-16 02:14:59,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:14:59,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-16 02:14:59,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:14:59,899 INFO L225 Difference]: With dead ends: 3734 [2023-12-16 02:14:59,899 INFO L226 Difference]: Without dead ends: 2764 [2023-12-16 02:14:59,903 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 02:14:59,906 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 941 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:14:59,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 268 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 02:14:59,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2023-12-16 02:14:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2723. [2023-12-16 02:14:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2722 states have (on average 1.3945628214548127) internal successors, (3796), 2722 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states 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 02:14:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3796 transitions. [2023-12-16 02:14:59,949 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3796 transitions. Word has length 88 [2023-12-16 02:14:59,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:14:59,953 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3796 transitions. [2023-12-16 02:14:59,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 02:14:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3796 transitions. [2023-12-16 02:14:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 02:14:59,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:14:59,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:14:59,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:14:59,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:14:59,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:14:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1800239944, now seen corresponding path program 1 times [2023-12-16 02:14:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:14:59,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124836504] [2023-12-16 02:14:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:14:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:00,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:00,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124836504] [2023-12-16 02:15:00,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124836504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:00,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:00,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:15:00,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998123891] [2023-12-16 02:15:00,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:00,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:00,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:00,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:00,242 INFO L87 Difference]: Start difference. First operand 2723 states and 3796 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 02:15:02,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:02,571 INFO L93 Difference]: Finished difference Result 6324 states and 8833 transitions. [2023-12-16 02:15:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:02,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-16 02:15:02,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:02,581 INFO L225 Difference]: With dead ends: 6324 [2023-12-16 02:15:02,582 INFO L226 Difference]: Without dead ends: 3602 [2023-12-16 02:15:02,584 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 02:15:02,585 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:02,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 02:15:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2023-12-16 02:15:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3582. [2023-12-16 02:15:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 1.360513822954482) internal successors, (4872), 3581 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 02:15:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 4872 transitions. [2023-12-16 02:15:02,631 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 4872 transitions. Word has length 123 [2023-12-16 02:15:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:02,632 INFO L495 AbstractCegarLoop]: Abstraction has 3582 states and 4872 transitions. [2023-12-16 02:15:02,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 02:15:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 4872 transitions. [2023-12-16 02:15:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 02:15:02,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:02,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:02,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:15:02,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:02,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:02,638 INFO L85 PathProgramCache]: Analyzing trace with hash -457313913, now seen corresponding path program 1 times [2023-12-16 02:15:02,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:02,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995770354] [2023-12-16 02:15:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:02,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:02,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:02,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995770354] [2023-12-16 02:15:02,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995770354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:02,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:02,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:15:02,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033311959] [2023-12-16 02:15:02,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:02,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:02,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:02,766 INFO L87 Difference]: Start difference. First operand 3582 states and 4872 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 02:15:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:04,372 INFO L93 Difference]: Finished difference Result 9292 states and 12694 transitions. [2023-12-16 02:15:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:04,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-16 02:15:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:04,387 INFO L225 Difference]: With dead ends: 9292 [2023-12-16 02:15:04,387 INFO L226 Difference]: Without dead ends: 4852 [2023-12-16 02:15:04,393 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 02:15:04,394 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 348 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 588 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 02:15:04,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 588 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:15:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4852 states. [2023-12-16 02:15:04,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 4000. [2023-12-16 02:15:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3999 states have (on average 1.2278069517379344) internal successors, (4910), 3999 states have internal predecessors, (4910), 0 states have call successors, (0), 0 states 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 02:15:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 4910 transitions. [2023-12-16 02:15:04,453 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 4910 transitions. Word has length 129 [2023-12-16 02:15:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:04,454 INFO L495 AbstractCegarLoop]: Abstraction has 4000 states and 4910 transitions. [2023-12-16 02:15:04,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 02:15:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 4910 transitions. [2023-12-16 02:15:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-16 02:15:04,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:04,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:04,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:15:04,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -53380997, now seen corresponding path program 1 times [2023-12-16 02:15:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005929521] [2023-12-16 02:15:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:04,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-16 02:15:04,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:04,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005929521] [2023-12-16 02:15:04,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005929521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:04,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:04,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:04,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953269104] [2023-12-16 02:15:04,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:04,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:04,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:04,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:04,561 INFO L87 Difference]: Start difference. First operand 4000 states and 4910 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:15:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:06,175 INFO L93 Difference]: Finished difference Result 10124 states and 12628 transitions. [2023-12-16 02:15:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:06,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2023-12-16 02:15:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:06,192 INFO L225 Difference]: With dead ends: 10124 [2023-12-16 02:15:06,192 INFO L226 Difference]: Without dead ends: 6125 [2023-12-16 02:15:06,197 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 02:15:06,199 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 440 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:06,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 475 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:15:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2023-12-16 02:15:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 3977. [2023-12-16 02:15:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3976 states have (on average 1.2261066398390341) internal successors, (4875), 3976 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states 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 02:15:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 4875 transitions. [2023-12-16 02:15:06,267 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 4875 transitions. Word has length 172 [2023-12-16 02:15:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:06,267 INFO L495 AbstractCegarLoop]: Abstraction has 3977 states and 4875 transitions. [2023-12-16 02:15:06,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:15:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 4875 transitions. [2023-12-16 02:15:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-16 02:15:06,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:06,269 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:06,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:15:06,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:06,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash 9901152, now seen corresponding path program 1 times [2023-12-16 02:15:06,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:06,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255151387] [2023-12-16 02:15:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:06,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255151387] [2023-12-16 02:15:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255151387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:06,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:06,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:15:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321627109] [2023-12-16 02:15:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:06,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:15:06,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:15:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:15:06,513 INFO L87 Difference]: Start difference. First operand 3977 states and 4875 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 02:15:08,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:08,579 INFO L93 Difference]: Finished difference Result 10527 states and 13155 transitions. [2023-12-16 02:15:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:15:08,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-16 02:15:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:08,595 INFO L225 Difference]: With dead ends: 10527 [2023-12-16 02:15:08,595 INFO L226 Difference]: Without dead ends: 6551 [2023-12-16 02:15:08,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:15:08,599 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 596 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:08,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 858 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:15:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2023-12-16 02:15:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 6534. [2023-12-16 02:15:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6534 states, 6533 states have (on average 1.2058778509107608) internal successors, (7878), 6533 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states 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 02:15:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 7878 transitions. [2023-12-16 02:15:08,689 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 7878 transitions. Word has length 179 [2023-12-16 02:15:08,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:08,690 INFO L495 AbstractCegarLoop]: Abstraction has 6534 states and 7878 transitions. [2023-12-16 02:15:08,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 02:15:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 7878 transitions. [2023-12-16 02:15:08,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-16 02:15:08,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:08,692 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:08,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:15:08,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:08,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:08,693 INFO L85 PathProgramCache]: Analyzing trace with hash 459410670, now seen corresponding path program 1 times [2023-12-16 02:15:08,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:08,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123477633] [2023-12-16 02:15:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:08,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 172 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 02:15:08,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:08,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123477633] [2023-12-16 02:15:08,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123477633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:08,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393538702] [2023-12-16 02:15:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:08,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:15:08,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:15:08,969 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 02:15:08,975 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 02:15:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:09,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:15:09,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:15:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 172 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 02:15:09,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:15:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 02:15:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393538702] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:09,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:15:09,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-16 02:15:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753128854] [2023-12-16 02:15:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:15:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:09,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:15:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:15:09,513 INFO L87 Difference]: Start difference. First operand 6534 states and 7878 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 02:15:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:12,411 INFO L93 Difference]: Finished difference Result 21182 states and 25860 transitions. [2023-12-16 02:15:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:15:12,413 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 242 [2023-12-16 02:15:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:12,447 INFO L225 Difference]: With dead ends: 21182 [2023-12-16 02:15:12,447 INFO L226 Difference]: Without dead ends: 14217 [2023-12-16 02:15:12,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 481 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 02:15:12,457 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1070 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 1228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1228 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:12,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 144 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1228 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 02:15:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14217 states. [2023-12-16 02:15:12,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14217 to 14215. [2023-12-16 02:15:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14215 states, 14214 states have (on average 1.197481356409174) internal successors, (17021), 14214 states have internal predecessors, (17021), 0 states have call successors, (0), 0 states 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 02:15:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14215 states to 14215 states and 17021 transitions. [2023-12-16 02:15:12,671 INFO L78 Accepts]: Start accepts. Automaton has 14215 states and 17021 transitions. Word has length 242 [2023-12-16 02:15:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:12,671 INFO L495 AbstractCegarLoop]: Abstraction has 14215 states and 17021 transitions. [2023-12-16 02:15:12,672 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 02:15:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 14215 states and 17021 transitions. [2023-12-16 02:15:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-16 02:15:12,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:12,674 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:12,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:15:12,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:15:12,880 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:12,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:12,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1180144778, now seen corresponding path program 1 times [2023-12-16 02:15:12,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:12,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610849292] [2023-12-16 02:15:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-16 02:15:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610849292] [2023-12-16 02:15:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610849292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:13,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:13,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:13,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97839774] [2023-12-16 02:15:13,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:13,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:13,030 INFO L87 Difference]: Start difference. First operand 14215 states and 17021 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 02:15:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:14,675 INFO L93 Difference]: Finished difference Result 31406 states and 37751 transitions. [2023-12-16 02:15:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 255 [2023-12-16 02:15:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:14,701 INFO L225 Difference]: With dead ends: 31406 [2023-12-16 02:15:14,701 INFO L226 Difference]: Without dead ends: 16766 [2023-12-16 02:15:14,713 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 02:15:14,714 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 372 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:14,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 902 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:15:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16766 states. [2023-12-16 02:15:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16766 to 16766. [2023-12-16 02:15:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16766 states, 16765 states have (on average 1.1703549060542797) internal successors, (19621), 16765 states have internal predecessors, (19621), 0 states have call successors, (0), 0 states 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 02:15:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16766 states to 16766 states and 19621 transitions. [2023-12-16 02:15:14,891 INFO L78 Accepts]: Start accepts. Automaton has 16766 states and 19621 transitions. Word has length 255 [2023-12-16 02:15:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:14,891 INFO L495 AbstractCegarLoop]: Abstraction has 16766 states and 19621 transitions. [2023-12-16 02:15:14,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 02:15:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 16766 states and 19621 transitions. [2023-12-16 02:15:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-16 02:15:14,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:14,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:15:14,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:14,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1540367689, now seen corresponding path program 1 times [2023-12-16 02:15:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:14,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833499049] [2023-12-16 02:15:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:14,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-16 02:15:15,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:15,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833499049] [2023-12-16 02:15:15,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833499049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:15,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:15,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:15,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451868763] [2023-12-16 02:15:15,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:15,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:15,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:15,029 INFO L87 Difference]: Start difference. First operand 16766 states and 19621 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 02:15:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:16,627 INFO L93 Difference]: Finished difference Result 36512 states and 42735 transitions. [2023-12-16 02:15:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:16,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 02:15:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:16,654 INFO L225 Difference]: With dead ends: 36512 [2023-12-16 02:15:16,654 INFO L226 Difference]: Without dead ends: 19322 [2023-12-16 02:15:16,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:16,670 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 422 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:16,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 903 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:15:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19322 states. [2023-12-16 02:15:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19322 to 19320. [2023-12-16 02:15:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19320 states, 19319 states have (on average 1.154459340545577) internal successors, (22303), 19319 states have internal predecessors, (22303), 0 states have call successors, (0), 0 states 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 02:15:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19320 states to 19320 states and 22303 transitions. [2023-12-16 02:15:16,853 INFO L78 Accepts]: Start accepts. Automaton has 19320 states and 22303 transitions. Word has length 256 [2023-12-16 02:15:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:16,853 INFO L495 AbstractCegarLoop]: Abstraction has 19320 states and 22303 transitions. [2023-12-16 02:15:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 02:15:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 19320 states and 22303 transitions. [2023-12-16 02:15:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-16 02:15:16,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:16,857 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:16,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 02:15:16,857 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:16,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:16,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1450568084, now seen corresponding path program 1 times [2023-12-16 02:15:16,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:16,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562002144] [2023-12-16 02:15:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:16,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-16 02:15:16,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:16,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562002144] [2023-12-16 02:15:16,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562002144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:16,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:16,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:16,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77789288] [2023-12-16 02:15:16,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:16,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:16,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:16,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:16,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:16,988 INFO L87 Difference]: Start difference. First operand 19320 states and 22303 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 02:15:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:18,635 INFO L93 Difference]: Finished difference Result 50545 states and 58024 transitions. [2023-12-16 02:15:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:18,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 290 [2023-12-16 02:15:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:18,684 INFO L225 Difference]: With dead ends: 50545 [2023-12-16 02:15:18,685 INFO L226 Difference]: Without dead ends: 30793 [2023-12-16 02:15:18,704 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 02:15:18,705 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 449 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:18,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 418 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:15:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30793 states. [2023-12-16 02:15:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30793 to 28238. [2023-12-16 02:15:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28238 states, 28237 states have (on average 1.1292984382193576) internal successors, (31888), 28237 states have internal predecessors, (31888), 0 states have call successors, (0), 0 states 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 02:15:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28238 states to 28238 states and 31888 transitions. [2023-12-16 02:15:19,052 INFO L78 Accepts]: Start accepts. Automaton has 28238 states and 31888 transitions. Word has length 290 [2023-12-16 02:15:19,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:19,052 INFO L495 AbstractCegarLoop]: Abstraction has 28238 states and 31888 transitions. [2023-12-16 02:15:19,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 02:15:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 28238 states and 31888 transitions. [2023-12-16 02:15:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-16 02:15:19,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:19,057 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-16 02:15:19,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 02:15:19,057 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:19,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:19,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1568137486, now seen corresponding path program 1 times [2023-12-16 02:15:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375560549] [2023-12-16 02:15:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-16 02:15:19,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:19,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375560549] [2023-12-16 02:15:19,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375560549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:19,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:19,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086771977] [2023-12-16 02:15:19,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:19,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:19,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:19,211 INFO L87 Difference]: Start difference. First operand 28238 states and 31888 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 02:15:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:20,691 INFO L93 Difference]: Finished difference Result 66261 states and 75097 transitions. [2023-12-16 02:15:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:20,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 308 [2023-12-16 02:15:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:20,731 INFO L225 Difference]: With dead ends: 66261 [2023-12-16 02:15:20,731 INFO L226 Difference]: Without dead ends: 36747 [2023-12-16 02:15:20,751 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 02:15:20,751 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 342 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:20,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 773 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 02:15:20,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36747 states. [2023-12-16 02:15:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36747 to 35470. [2023-12-16 02:15:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35470 states, 35469 states have (on average 1.110631819335194) internal successors, (39393), 35469 states have internal predecessors, (39393), 0 states have call successors, (0), 0 states 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 02:15:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35470 states to 35470 states and 39393 transitions. [2023-12-16 02:15:21,271 INFO L78 Accepts]: Start accepts. Automaton has 35470 states and 39393 transitions. Word has length 308 [2023-12-16 02:15:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:21,272 INFO L495 AbstractCegarLoop]: Abstraction has 35470 states and 39393 transitions. [2023-12-16 02:15:21,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 02:15:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 35470 states and 39393 transitions. [2023-12-16 02:15:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-16 02:15:21,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:21,276 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 02:15:21,276 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:21,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2037383727, now seen corresponding path program 1 times [2023-12-16 02:15:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916041812] [2023-12-16 02:15:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 313 proven. 73 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-16 02:15:21,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916041812] [2023-12-16 02:15:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916041812] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505368568] [2023-12-16 02:15:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:21,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:15:21,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:15:21,543 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 02:15:21,545 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 02:15:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:21,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:15:21,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:15:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 313 proven. 73 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-16 02:15:21,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:15:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-16 02:15:21,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505368568] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:21,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:15:21,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-16 02:15:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566980019] [2023-12-16 02:15:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:21,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:15:21,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:21,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:15:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:15:21,988 INFO L87 Difference]: Start difference. First operand 35470 states and 39393 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 02:15:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:24,862 INFO L93 Difference]: Finished difference Result 85426 states and 94983 transitions. [2023-12-16 02:15:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:15:24,870 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 316 [2023-12-16 02:15:24,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:24,923 INFO L225 Difference]: With dead ends: 85426 [2023-12-16 02:15:24,923 INFO L226 Difference]: Without dead ends: 49530 [2023-12-16 02:15:24,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 629 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 02:15:24,945 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 841 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:24,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 184 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 02:15:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49530 states. [2023-12-16 02:15:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49530 to 46977. [2023-12-16 02:15:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46977 states, 46976 states have (on average 1.114867166212534) internal successors, (52372), 46976 states have internal predecessors, (52372), 0 states have call successors, (0), 0 states 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 02:15:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46977 states to 46977 states and 52372 transitions. [2023-12-16 02:15:25,374 INFO L78 Accepts]: Start accepts. Automaton has 46977 states and 52372 transitions. Word has length 316 [2023-12-16 02:15:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:25,374 INFO L495 AbstractCegarLoop]: Abstraction has 46977 states and 52372 transitions. [2023-12-16 02:15:25,374 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 02:15:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 46977 states and 52372 transitions. [2023-12-16 02:15:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-16 02:15:25,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:25,381 INFO L195 NwaCegarLoop]: trace histogram [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, 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 02:15:25,388 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 02:15:25,585 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 02:15:25,585 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:25,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1264394988, now seen corresponding path program 1 times [2023-12-16 02:15:25,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:25,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601337513] [2023-12-16 02:15:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2023-12-16 02:15:26,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601337513] [2023-12-16 02:15:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601337513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:26,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:26,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:26,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585061973] [2023-12-16 02:15:26,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:26,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:26,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:26,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:26,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:26,177 INFO L87 Difference]: Start difference. First operand 46977 states and 52372 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 02:15:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:28,086 INFO L93 Difference]: Finished difference Result 114425 states and 127135 transitions. [2023-12-16 02:15:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:28,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 414 [2023-12-16 02:15:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:28,162 INFO L225 Difference]: With dead ends: 114425 [2023-12-16 02:15:28,162 INFO L226 Difference]: Without dead ends: 67023 [2023-12-16 02:15:28,192 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 02:15:28,193 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 471 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:28,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 346 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:15:28,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67023 states. [2023-12-16 02:15:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67023 to 65709. [2023-12-16 02:15:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65709 states, 65708 states have (on average 1.1053600779204968) internal successors, (72631), 65708 states have internal predecessors, (72631), 0 states have call successors, (0), 0 states 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 02:15:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65709 states to 65709 states and 72631 transitions. [2023-12-16 02:15:29,080 INFO L78 Accepts]: Start accepts. Automaton has 65709 states and 72631 transitions. Word has length 414 [2023-12-16 02:15:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:29,081 INFO L495 AbstractCegarLoop]: Abstraction has 65709 states and 72631 transitions. [2023-12-16 02:15:29,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 02:15:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 65709 states and 72631 transitions. [2023-12-16 02:15:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-16 02:15:29,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:29,109 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 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 02:15:29,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 02:15:29,109 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:29,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1792100309, now seen corresponding path program 1 times [2023-12-16 02:15:29,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:29,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791298978] [2023-12-16 02:15:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:29,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-16 02:15:29,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:29,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791298978] [2023-12-16 02:15:29,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791298978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:29,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:29,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797647495] [2023-12-16 02:15:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:29,428 INFO L87 Difference]: Start difference. First operand 65709 states and 72631 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 02:15:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:31,328 INFO L93 Difference]: Finished difference Result 145894 states and 161355 transitions. [2023-12-16 02:15:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:31,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 441 [2023-12-16 02:15:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:31,430 INFO L225 Difference]: With dead ends: 145894 [2023-12-16 02:15:31,431 INFO L226 Difference]: Without dead ends: 79760 [2023-12-16 02:15:31,474 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 02:15:31,474 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 488 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:31,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 299 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:15:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79760 states. [2023-12-16 02:15:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79760 to 60578. [2023-12-16 02:15:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60578 states, 60577 states have (on average 1.107516053947868) internal successors, (67090), 60577 states have internal predecessors, (67090), 0 states have call successors, (0), 0 states 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 02:15:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60578 states to 60578 states and 67090 transitions. [2023-12-16 02:15:32,477 INFO L78 Accepts]: Start accepts. Automaton has 60578 states and 67090 transitions. Word has length 441 [2023-12-16 02:15:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:32,477 INFO L495 AbstractCegarLoop]: Abstraction has 60578 states and 67090 transitions. [2023-12-16 02:15:32,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 02:15:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 60578 states and 67090 transitions. [2023-12-16 02:15:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-16 02:15:32,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:32,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:32,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:15:32,486 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:32,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1335357181, now seen corresponding path program 1 times [2023-12-16 02:15:32,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:32,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34421356] [2023-12-16 02:15:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:32,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-16 02:15:32,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34421356] [2023-12-16 02:15:32,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34421356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:32,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:32,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:32,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286861672] [2023-12-16 02:15:32,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:32,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:32,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:32,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:32,889 INFO L87 Difference]: Start difference. First operand 60578 states and 67090 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 02:15:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:34,674 INFO L93 Difference]: Finished difference Result 133503 states and 147827 transitions. [2023-12-16 02:15:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:34,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 453 [2023-12-16 02:15:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:34,751 INFO L225 Difference]: With dead ends: 133503 [2023-12-16 02:15:34,751 INFO L226 Difference]: Without dead ends: 72494 [2023-12-16 02:15:34,787 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 02:15:34,788 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 501 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:34,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 167 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:15:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72494 states. [2023-12-16 02:15:35,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72494 to 69500. [2023-12-16 02:15:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69500 states, 69499 states have (on average 1.1070087339386179) internal successors, (76936), 69499 states have internal predecessors, (76936), 0 states have call successors, (0), 0 states 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 02:15:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69500 states to 69500 states and 76936 transitions. [2023-12-16 02:15:35,769 INFO L78 Accepts]: Start accepts. Automaton has 69500 states and 76936 transitions. Word has length 453 [2023-12-16 02:15:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:35,770 INFO L495 AbstractCegarLoop]: Abstraction has 69500 states and 76936 transitions. [2023-12-16 02:15:35,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 02:15:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 69500 states and 76936 transitions. [2023-12-16 02:15:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-16 02:15:35,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:35,788 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:35,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 02:15:35,788 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:35,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash -98011973, now seen corresponding path program 1 times [2023-12-16 02:15:35,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:35,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18577798] [2023-12-16 02:15:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:35,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:36,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:36,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18577798] [2023-12-16 02:15:36,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18577798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:36,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:36,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:15:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432500624] [2023-12-16 02:15:36,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:36,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:15:36,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:36,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:15:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:15:36,298 INFO L87 Difference]: Start difference. First operand 69500 states and 76936 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 02:15:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:39,068 INFO L93 Difference]: Finished difference Result 164574 states and 182144 transitions. [2023-12-16 02:15:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:15:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 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 474 [2023-12-16 02:15:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:39,288 INFO L225 Difference]: With dead ends: 164574 [2023-12-16 02:15:39,289 INFO L226 Difference]: Without dead ends: 95075 [2023-12-16 02:15:39,307 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 02:15:39,308 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 645 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:39,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 163 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 02:15:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95075 states. [2023-12-16 02:15:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95075 to 89536. [2023-12-16 02:15:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89536 states, 89535 states have (on average 1.1079354442396827) internal successors, (99199), 89535 states have internal predecessors, (99199), 0 states have call successors, (0), 0 states 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 02:15:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89536 states to 89536 states and 99199 transitions. [2023-12-16 02:15:40,275 INFO L78 Accepts]: Start accepts. Automaton has 89536 states and 99199 transitions. Word has length 474 [2023-12-16 02:15:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:40,275 INFO L495 AbstractCegarLoop]: Abstraction has 89536 states and 99199 transitions. [2023-12-16 02:15:40,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 02:15:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 89536 states and 99199 transitions. [2023-12-16 02:15:40,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-16 02:15:40,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:40,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:40,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 02:15:40,285 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:40,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash 293597381, now seen corresponding path program 1 times [2023-12-16 02:15:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:40,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145380982] [2023-12-16 02:15:40,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 02:15:41,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:41,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145380982] [2023-12-16 02:15:41,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145380982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655382356] [2023-12-16 02:15:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:41,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:15:41,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:15:41,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:15:41,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:15:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:41,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:15:41,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:15:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 02:15:42,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:15:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 02:15:43,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655382356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:15:43,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 02:15:43,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-12-16 02:15:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411269893] [2023-12-16 02:15:43,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 02:15:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:15:43,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:15:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:15:43,350 INFO L87 Difference]: Start difference. First operand 89536 states and 99199 transitions. Second operand has 8 states, 8 states have (on average 120.375) internal successors, (963), 7 states have internal predecessors, (963), 0 states have call successors, (0), 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 02:15:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:15:48,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1029 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:15:48,390 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 2609 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 5134 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 6037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 5134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:48,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 280 Invalid, 6037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 5134 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-16 02:15:48,391 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:15:48,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 02:15:48,403 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:15:48,403 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:15:48,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 02:15:48,593 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (89536states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (133278 states constructed, input type IntersectNwa). [2023-12-16 02:15:48,596 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:48,598 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:15:48,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:15:48 BoogieIcfgContainer [2023-12-16 02:15:48,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:15:48,600 INFO L158 Benchmark]: Toolchain (without parser) took 58882.93ms. Allocated memory was 224.4MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 164.9MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-16 02:15:48,600 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 224.4MB. Free memory is still 171.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:15:48,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 891.33ms. Allocated memory was 224.4MB in the beginning and 345.0MB in the end (delta: 120.6MB). Free memory was 164.9MB in the beginning and 221.6MB in the end (delta: -56.7MB). Peak memory consumption was 65.7MB. Max. memory is 8.0GB. [2023-12-16 02:15:48,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 205.51ms. Allocated memory is still 345.0MB. Free memory was 221.6MB in the beginning and 158.1MB in the end (delta: 63.4MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-16 02:15:48,601 INFO L158 Benchmark]: Boogie Preprocessor took 348.58ms. Allocated memory is still 345.0MB. Free memory was 158.1MB in the beginning and 217.9MB in the end (delta: -59.8MB). Peak memory consumption was 90.7MB. Max. memory is 8.0GB. [2023-12-16 02:15:48,601 INFO L158 Benchmark]: RCFGBuilder took 2558.27ms. Allocated memory was 345.0MB in the beginning and 690.0MB in the end (delta: 345.0MB). Free memory was 217.9MB in the beginning and 457.6MB in the end (delta: -239.7MB). Peak memory consumption was 124.8MB. Max. memory is 8.0GB. [2023-12-16 02:15:48,601 INFO L158 Benchmark]: TraceAbstraction took 54874.40ms. Allocated memory was 690.0MB in the beginning and 4.7GB in the end (delta: 4.0GB). Free memory was 457.1MB in the beginning and 3.0GB in the end (delta: -2.5GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-16 02:15:48,602 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 224.4MB. Free memory is still 171.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 891.33ms. Allocated memory was 224.4MB in the beginning and 345.0MB in the end (delta: 120.6MB). Free memory was 164.9MB in the beginning and 221.6MB in the end (delta: -56.7MB). Peak memory consumption was 65.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 205.51ms. Allocated memory is still 345.0MB. Free memory was 221.6MB in the beginning and 158.1MB in the end (delta: 63.4MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 348.58ms. Allocated memory is still 345.0MB. Free memory was 158.1MB in the beginning and 217.9MB in the end (delta: -59.8MB). Peak memory consumption was 90.7MB. Max. memory is 8.0GB. * RCFGBuilder took 2558.27ms. Allocated memory was 345.0MB in the beginning and 690.0MB in the end (delta: 345.0MB). Free memory was 217.9MB in the beginning and 457.6MB in the end (delta: -239.7MB). Peak memory consumption was 124.8MB. Max. memory is 8.0GB. * TraceAbstraction took 54874.40ms. Allocated memory was 690.0MB in the beginning and 4.7GB in the end (delta: 4.0GB). Free memory was 457.1MB in the beginning and 3.0GB in the end (delta: -2.5GB). Peak memory consumption was 1.6GB. 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: 75]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 75). Cancelled while NwaCegarLoop was constructing difference of abstraction (89536states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (133278 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.8s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 39.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11342 SdHoareTripleChecker+Valid, 35.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11342 mSDsluCounter, 8733 SdHoareTripleChecker+Invalid, 29.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1347 mSDsCounter, 7287 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31072 IncrementalHoareTripleChecker+Invalid, 38359 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7287 mSolverCounterUnsat, 7386 mSDtfsCounter, 31072 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2198 GetRequests, 2165 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89536occurred in iteration=17, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 38499 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 5768 NumberOfCodeBlocks, 5768 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 6819 ConstructedInterpolants, 0 QuantifiedInterpolants, 21863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1476 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 24 InterpolantComputations, 17 PerfectInterpolantSequences, 5795/6327 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown