/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:14:04,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:14:04,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:14:04,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:14:04,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:14:04,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:14:04,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:14:04,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:14:04,716 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:14:04,719 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:14:04,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:14:04,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:14:04,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:14:04,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:14:04,720 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:14:04,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:14:04,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:14:04,721 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:14:04,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:14:04,721 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:14:04,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:14:04,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:14:04,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:14:04,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:14:04,724 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:14:04,724 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:14:04,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:14:04,725 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:14:04,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:14:04,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:14:04,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:14:04,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:14:04,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:14:04,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:14:04,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:14:04,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:14:04,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:14:04,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:14:04,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:14:04,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:14:04,727 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:14:04,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:14:04,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:14:04,727 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:14:04,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:14:04,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:14:04,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:14:04,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:14:04,904 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:14:04,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2023-12-15 18:14:05,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:14:06,077 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:14:06,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2023-12-15 18:14:06,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d91c642/b581932681be4a44933cde9672a44dc0/FLAG5b2cad8cc [2023-12-15 18:14:06,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d91c642/b581932681be4a44933cde9672a44dc0 [2023-12-15 18:14:06,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:14:06,109 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:14:06,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:14:06,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:14:06,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:14:06,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:06,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625c7baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06, skipping insertion in model container [2023-12-15 18:14:06,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:06,171 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:14:06,531 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/Problem03_label07.c[57439,57452] [2023-12-15 18:14:06,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:14:06,563 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:14:06,773 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/Problem03_label07.c[57439,57452] [2023-12-15 18:14:06,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:14:06,835 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:14:06,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06 WrapperNode [2023-12-15 18:14:06,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:14:06,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:14:06,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:14:06,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:14:06,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:06,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:06,930 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-15 18:14:06,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:14:06,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:14:06,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:14:06,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:14:06,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:06,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:06,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:06,981 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:14:06,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:06,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:07,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:07,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:07,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:07,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:07,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:14:07,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:14:07,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:14:07,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:14:07,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (1/1) ... [2023-12-15 18:14:07,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:14:07,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:14:07,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:14:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:14:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:14:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:14:07,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:14:07,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:14:07,174 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:14:07,175 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:14:08,334 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:14:08,374 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:14:08,374 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:14:08,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:14:08 BoogieIcfgContainer [2023-12-15 18:14:08,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:14:08,377 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:14:08,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:14:08,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:14:08,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:14:06" (1/3) ... [2023-12-15 18:14:08,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1ce9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:14:08, skipping insertion in model container [2023-12-15 18:14:08,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:14:06" (2/3) ... [2023-12-15 18:14:08,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1ce9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:14:08, skipping insertion in model container [2023-12-15 18:14:08,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:14:08" (3/3) ... [2023-12-15 18:14:08,382 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label07.c [2023-12-15 18:14:08,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:14:08,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:14:08,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:14:08,446 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;@3538b1a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:14:08,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:14:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:14:08,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:08,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:08,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:08,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1341357854, now seen corresponding path program 1 times [2023-12-15 18:14:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141986235] [2023-12-15 18:14:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:08,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:14:08,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:08,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141986235] [2023-12-15 18:14:08,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141986235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:08,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:08,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:14:08,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438548010] [2023-12-15 18:14:08,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:08,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:14:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:08,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:14:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:14:08,905 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:08,950 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-15 18:14:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:14:08,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 18:14:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:08,965 INFO L225 Difference]: With dead ends: 479 [2023-12-15 18:14:08,966 INFO L226 Difference]: Without dead ends: 238 [2023-12-15 18:14:08,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:14:08,972 INFO L413 NwaCegarLoop]: 392 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, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:08,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:14:08,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-15 18:14:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-15 18:14:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-15 18:14:09,010 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 171 [2023-12-15 18:14:09,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:09,011 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-15 18:14:09,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:09,011 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-15 18:14:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:14:09,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:09,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:09,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:14:09,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:09,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1416022641, now seen corresponding path program 1 times [2023-12-15 18:14:09,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:09,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357636608] [2023-12-15 18:14:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:09,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:14:09,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:09,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357636608] [2023-12-15 18:14:09,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357636608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:09,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:09,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:14:09,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668557280] [2023-12-15 18:14:09,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:09,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:09,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:09,406 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:10,047 INFO L93 Difference]: Finished difference Result 704 states and 1166 transitions. [2023-12-15 18:14:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:10,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 18:14:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:10,052 INFO L225 Difference]: With dead ends: 704 [2023-12-15 18:14:10,052 INFO L226 Difference]: Without dead ends: 467 [2023-12-15 18:14:10,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:10,054 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 73 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:10,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 129 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-15 18:14:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 453. [2023-12-15 18:14:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.6283185840707965) internal successors, (736), 452 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 736 transitions. [2023-12-15 18:14:10,078 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 736 transitions. Word has length 171 [2023-12-15 18:14:10,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:10,079 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 736 transitions. [2023-12-15 18:14:10,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:10,079 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 736 transitions. [2023-12-15 18:14:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-15 18:14:10,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:10,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:10,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:14:10,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:10,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:10,088 INFO L85 PathProgramCache]: Analyzing trace with hash -74064443, now seen corresponding path program 1 times [2023-12-15 18:14:10,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:10,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993207372] [2023-12-15 18:14:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:10,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:14:10,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:10,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993207372] [2023-12-15 18:14:10,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993207372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:10,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:10,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:14:10,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192689337] [2023-12-15 18:14:10,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:10,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:10,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:10,251 INFO L87 Difference]: Start difference. First operand 453 states and 736 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:10,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:10,872 INFO L93 Difference]: Finished difference Result 1329 states and 2168 transitions. [2023-12-15 18:14:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:10,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2023-12-15 18:14:10,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:10,875 INFO L225 Difference]: With dead ends: 1329 [2023-12-15 18:14:10,876 INFO L226 Difference]: Without dead ends: 877 [2023-12-15 18:14:10,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:10,878 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:10,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 161 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-15 18:14:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2023-12-15 18:14:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5229357798165137) internal successors, (1328), 872 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1328 transitions. [2023-12-15 18:14:10,918 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1328 transitions. Word has length 176 [2023-12-15 18:14:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:10,918 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1328 transitions. [2023-12-15 18:14:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1328 transitions. [2023-12-15 18:14:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-15 18:14:10,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:10,923 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:14:10,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:14:10,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:10,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash 490777518, now seen corresponding path program 1 times [2023-12-15 18:14:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:10,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208684093] [2023-12-15 18:14:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:10,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:14:11,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:11,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208684093] [2023-12-15 18:14:11,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208684093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:11,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:11,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:14:11,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916811669] [2023-12-15 18:14:11,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:11,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:11,059 INFO L87 Difference]: Start difference. First operand 873 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 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) [2023-12-15 18:14:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:11,668 INFO L93 Difference]: Finished difference Result 2574 states and 3934 transitions. [2023-12-15 18:14:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 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 [2023-12-15 18:14:11,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:11,673 INFO L225 Difference]: With dead ends: 2574 [2023-12-15 18:14:11,673 INFO L226 Difference]: Without dead ends: 1702 [2023-12-15 18:14:11,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:11,675 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:11,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-12-15 18:14:11,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1686. [2023-12-15 18:14:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1685 states have (on average 1.4997032640949555) internal successors, (2527), 1685 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2527 transitions. [2023-12-15 18:14:11,700 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2527 transitions. Word has length 179 [2023-12-15 18:14:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:11,700 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2527 transitions. [2023-12-15 18:14:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 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) [2023-12-15 18:14:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2527 transitions. [2023-12-15 18:14:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:14:11,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:11,703 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:14:11,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:14:11,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:11,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:11,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2038500311, now seen corresponding path program 1 times [2023-12-15 18:14:11,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:11,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106893440] [2023-12-15 18:14:11,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:11,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:14:11,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:11,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106893440] [2023-12-15 18:14:11,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106893440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:11,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:11,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:14:11,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257543501] [2023-12-15 18:14:11,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:11,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:11,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:11,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:11,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:11,880 INFO L87 Difference]: Start difference. First operand 1686 states and 2527 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:12,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:12,523 INFO L93 Difference]: Finished difference Result 4193 states and 6265 transitions. [2023-12-15 18:14:12,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:12,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-15 18:14:12,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:12,530 INFO L225 Difference]: With dead ends: 4193 [2023-12-15 18:14:12,530 INFO L226 Difference]: Without dead ends: 2508 [2023-12-15 18:14:12,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:12,534 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:12,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 111 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-12-15 18:14:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2507. [2023-12-15 18:14:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4672785315243415) internal successors, (3677), 2506 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3677 transitions. [2023-12-15 18:14:12,575 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3677 transitions. Word has length 181 [2023-12-15 18:14:12,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:12,575 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3677 transitions. [2023-12-15 18:14:12,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3677 transitions. [2023-12-15 18:14:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-15 18:14:12,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:12,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-12-15 18:14:12,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:14:12,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:12,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1654751361, now seen corresponding path program 1 times [2023-12-15 18:14:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:12,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888346844] [2023-12-15 18:14:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:14:12,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888346844] [2023-12-15 18:14:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888346844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:12,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:12,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:14:12,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972050040] [2023-12-15 18:14:12,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:12,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:12,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:12,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:12,732 INFO L87 Difference]: Start difference. First operand 2507 states and 3677 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:13,276 INFO L93 Difference]: Finished difference Result 5010 states and 7349 transitions. [2023-12-15 18:14:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:13,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 186 [2023-12-15 18:14:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:13,284 INFO L225 Difference]: With dead ends: 5010 [2023-12-15 18:14:13,284 INFO L226 Difference]: Without dead ends: 2504 [2023-12-15 18:14:13,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:13,289 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 106 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:13,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 383 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:14:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2023-12-15 18:14:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2095. [2023-12-15 18:14:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2094 states have (on average 1.3763132760267431) internal successors, (2882), 2094 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2882 transitions. [2023-12-15 18:14:13,329 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2882 transitions. Word has length 186 [2023-12-15 18:14:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:13,330 INFO L495 AbstractCegarLoop]: Abstraction has 2095 states and 2882 transitions. [2023-12-15 18:14:13,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2882 transitions. [2023-12-15 18:14:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 18:14:13,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:13,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:13,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:14:13,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:13,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1987516346, now seen corresponding path program 1 times [2023-12-15 18:14:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:13,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698328385] [2023-12-15 18:14:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:14:13,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:13,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698328385] [2023-12-15 18:14:13,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698328385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:13,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:13,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:14:13,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295014710] [2023-12-15 18:14:13,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:13,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:13,579 INFO L87 Difference]: Start difference. First operand 2095 states and 2882 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 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) [2023-12-15 18:14:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:14,195 INFO L93 Difference]: Finished difference Result 6220 states and 8561 transitions. [2023-12-15 18:14:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:14,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 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 188 [2023-12-15 18:14:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:14,205 INFO L225 Difference]: With dead ends: 6220 [2023-12-15 18:14:14,205 INFO L226 Difference]: Without dead ends: 4126 [2023-12-15 18:14:14,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:14,208 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 210 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:14,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 185 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2023-12-15 18:14:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3516. [2023-12-15 18:14:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3515 states have (on average 1.2623044096728306) internal successors, (4437), 3515 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4437 transitions. [2023-12-15 18:14:14,248 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4437 transitions. Word has length 188 [2023-12-15 18:14:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:14,248 INFO L495 AbstractCegarLoop]: Abstraction has 3516 states and 4437 transitions. [2023-12-15 18:14:14,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 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) [2023-12-15 18:14:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4437 transitions. [2023-12-15 18:14:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-15 18:14:14,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:14,252 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:14,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:14:14,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:14,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:14,252 INFO L85 PathProgramCache]: Analyzing trace with hash 144351892, now seen corresponding path program 1 times [2023-12-15 18:14:14,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:14,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665177911] [2023-12-15 18:14:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:14,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:14:14,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665177911] [2023-12-15 18:14:14,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665177911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:14,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:14,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:14:14,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117962655] [2023-12-15 18:14:14,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:14,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:14:14,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:14,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:14:14,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:14,462 INFO L87 Difference]: Start difference. First operand 3516 states and 4437 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:15,464 INFO L93 Difference]: Finished difference Result 13791 states and 17439 transitions. [2023-12-15 18:14:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:14:15,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 198 [2023-12-15 18:14:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:15,488 INFO L225 Difference]: With dead ends: 13791 [2023-12-15 18:14:15,489 INFO L226 Difference]: Without dead ends: 10276 [2023-12-15 18:14:15,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:15,495 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 560 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:15,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 119 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:14:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10276 states. [2023-12-15 18:14:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10276 to 10271. [2023-12-15 18:14:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10271 states, 10270 states have (on average 1.2510223953261927) internal successors, (12848), 10270 states have internal predecessors, (12848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 12848 transitions. [2023-12-15 18:14:15,614 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 12848 transitions. Word has length 198 [2023-12-15 18:14:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:15,614 INFO L495 AbstractCegarLoop]: Abstraction has 10271 states and 12848 transitions. [2023-12-15 18:14:15,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 12848 transitions. [2023-12-15 18:14:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 18:14:15,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:15,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:15,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:14:15,622 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:15,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:15,622 INFO L85 PathProgramCache]: Analyzing trace with hash 112387349, now seen corresponding path program 1 times [2023-12-15 18:14:15,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:15,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357073876] [2023-12-15 18:14:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:15,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:14:15,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:15,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357073876] [2023-12-15 18:14:15,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357073876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:14:15,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662885767] [2023-12-15 18:14:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:15,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:14:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:14:15,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:14:15,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:14:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:16,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:14:16,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:14:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-15 18:14:16,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:14:16,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662885767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:16,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:14:16,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-15 18:14:16,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874392285] [2023-12-15 18:14:16,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:14:16,330 INFO L87 Difference]: Start difference. First operand 10271 states and 12848 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:17,030 INFO L93 Difference]: Finished difference Result 30756 states and 38481 transitions. [2023-12-15 18:14:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 273 [2023-12-15 18:14:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:17,073 INFO L225 Difference]: With dead ends: 30756 [2023-12-15 18:14:17,073 INFO L226 Difference]: Without dead ends: 20486 [2023-12-15 18:14:17,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:14:17,120 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 98 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:17,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 172 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:17,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20486 states. [2023-12-15 18:14:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20486 to 19450. [2023-12-15 18:14:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19450 states, 19449 states have (on average 1.2198056455344748) internal successors, (23724), 19449 states have internal predecessors, (23724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 23724 transitions. [2023-12-15 18:14:17,316 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 23724 transitions. Word has length 273 [2023-12-15 18:14:17,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:17,317 INFO L495 AbstractCegarLoop]: Abstraction has 19450 states and 23724 transitions. [2023-12-15 18:14:17,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 23724 transitions. [2023-12-15 18:14:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-15 18:14:17,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:17,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:17,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:14:17,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:14:17,533 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:17,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1160109300, now seen corresponding path program 1 times [2023-12-15 18:14:17,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:17,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067199662] [2023-12-15 18:14:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-15 18:14:17,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:17,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067199662] [2023-12-15 18:14:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067199662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:17,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:17,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:14:17,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200180725] [2023-12-15 18:14:17,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:17,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:17,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:17,697 INFO L87 Difference]: Start difference. First operand 19450 states and 23724 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:18,075 INFO L93 Difference]: Finished difference Result 58056 states and 70849 transitions. [2023-12-15 18:14:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 281 [2023-12-15 18:14:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:18,139 INFO L225 Difference]: With dead ends: 58056 [2023-12-15 18:14:18,139 INFO L226 Difference]: Without dead ends: 38607 [2023-12-15 18:14:18,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:18,157 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 269 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:18,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 539 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:14:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38607 states. [2023-12-15 18:14:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38607 to 38605. [2023-12-15 18:14:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38605 states, 38604 states have (on average 1.2201067246917419) internal successors, (47101), 38604 states have internal predecessors, (47101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38605 states to 38605 states and 47101 transitions. [2023-12-15 18:14:18,675 INFO L78 Accepts]: Start accepts. Automaton has 38605 states and 47101 transitions. Word has length 281 [2023-12-15 18:14:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:18,676 INFO L495 AbstractCegarLoop]: Abstraction has 38605 states and 47101 transitions. [2023-12-15 18:14:18,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 38605 states and 47101 transitions. [2023-12-15 18:14:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 18:14:18,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:18,766 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:18,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:14:18,767 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:18,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:18,767 INFO L85 PathProgramCache]: Analyzing trace with hash -64281705, now seen corresponding path program 1 times [2023-12-15 18:14:18,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:18,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886632084] [2023-12-15 18:14:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:14:18,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:18,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886632084] [2023-12-15 18:14:18,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886632084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:18,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:18,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:14:18,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353715974] [2023-12-15 18:14:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:18,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:18,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:18,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:18,939 INFO L87 Difference]: Start difference. First operand 38605 states and 47101 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:19,797 INFO L93 Difference]: Finished difference Result 109101 states and 133126 transitions. [2023-12-15 18:14:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:19,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 282 [2023-12-15 18:14:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:19,891 INFO L225 Difference]: With dead ends: 109101 [2023-12-15 18:14:19,892 INFO L226 Difference]: Without dead ends: 70497 [2023-12-15 18:14:19,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:19,936 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 269 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:19,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 355 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:19,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70497 states. [2023-12-15 18:14:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70497 to 67649. [2023-12-15 18:14:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67649 states, 67648 states have (on average 1.1794583727530747) internal successors, (79788), 67648 states have internal predecessors, (79788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:20,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67649 states to 67649 states and 79788 transitions. [2023-12-15 18:14:20,861 INFO L78 Accepts]: Start accepts. Automaton has 67649 states and 79788 transitions. Word has length 282 [2023-12-15 18:14:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:20,862 INFO L495 AbstractCegarLoop]: Abstraction has 67649 states and 79788 transitions. [2023-12-15 18:14:20,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:20,862 INFO L276 IsEmpty]: Start isEmpty. Operand 67649 states and 79788 transitions. [2023-12-15 18:14:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-15 18:14:20,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:20,880 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:20,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:14:20,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:20,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1294212927, now seen corresponding path program 1 times [2023-12-15 18:14:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:20,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577005108] [2023-12-15 18:14:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:14:21,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:21,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577005108] [2023-12-15 18:14:21,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577005108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:21,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:14:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958585359] [2023-12-15 18:14:21,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:21,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:21,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:21,311 INFO L87 Difference]: Start difference. First operand 67649 states and 79788 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:22,251 INFO L93 Difference]: Finished difference Result 161502 states and 191693 transitions. [2023-12-15 18:14:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:22,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 301 [2023-12-15 18:14:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:22,509 INFO L225 Difference]: With dead ends: 161502 [2023-12-15 18:14:22,509 INFO L226 Difference]: Without dead ends: 93854 [2023-12-15 18:14:22,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:14:22,538 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 98 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:22,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 343 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:22,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93854 states. [2023-12-15 18:14:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93854 to 91400. [2023-12-15 18:14:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91400 states, 91399 states have (on average 1.1840720357990788) internal successors, (108223), 91399 states have internal predecessors, (108223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91400 states to 91400 states and 108223 transitions. [2023-12-15 18:14:23,623 INFO L78 Accepts]: Start accepts. Automaton has 91400 states and 108223 transitions. Word has length 301 [2023-12-15 18:14:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:23,624 INFO L495 AbstractCegarLoop]: Abstraction has 91400 states and 108223 transitions. [2023-12-15 18:14:23,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 91400 states and 108223 transitions. [2023-12-15 18:14:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-15 18:14:23,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:23,642 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:14:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:14:23,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:23,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1616114863, now seen corresponding path program 1 times [2023-12-15 18:14:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:23,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860718773] [2023-12-15 18:14:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:23,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-15 18:14:24,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:24,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860718773] [2023-12-15 18:14:24,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860718773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:24,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:24,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:14:24,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461318549] [2023-12-15 18:14:24,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:24,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:14:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:14:24,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:24,122 INFO L87 Difference]: Start difference. First operand 91400 states and 108223 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:25,610 INFO L93 Difference]: Finished difference Result 202781 states and 240377 transitions. [2023-12-15 18:14:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:14:25,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 306 [2023-12-15 18:14:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:25,741 INFO L225 Difference]: With dead ends: 202781 [2023-12-15 18:14:25,742 INFO L226 Difference]: Without dead ends: 111382 [2023-12-15 18:14:25,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:25,774 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 361 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:25,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 184 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:14:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111382 states. [2023-12-15 18:14:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111382 to 106860. [2023-12-15 18:14:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106860 states, 106859 states have (on average 1.173892699725807) internal successors, (125441), 106859 states have internal predecessors, (125441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106860 states to 106860 states and 125441 transitions. [2023-12-15 18:14:27,204 INFO L78 Accepts]: Start accepts. Automaton has 106860 states and 125441 transitions. Word has length 306 [2023-12-15 18:14:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:27,204 INFO L495 AbstractCegarLoop]: Abstraction has 106860 states and 125441 transitions. [2023-12-15 18:14:27,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 106860 states and 125441 transitions. [2023-12-15 18:14:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-15 18:14:27,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:27,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:14:27,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:14:27,220 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:27,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:27,220 INFO L85 PathProgramCache]: Analyzing trace with hash -948600359, now seen corresponding path program 1 times [2023-12-15 18:14:27,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:27,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700180431] [2023-12-15 18:14:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:27,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:14:27,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:27,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700180431] [2023-12-15 18:14:27,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700180431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:27,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:27,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:14:27,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560905092] [2023-12-15 18:14:27,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:27,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:14:27,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:14:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:27,647 INFO L87 Difference]: Start difference. First operand 106860 states and 125441 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:28,939 INFO L93 Difference]: Finished difference Result 222608 states and 260218 transitions. [2023-12-15 18:14:28,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:14:28,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 311 [2023-12-15 18:14:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:29,086 INFO L225 Difference]: With dead ends: 222608 [2023-12-15 18:14:29,086 INFO L226 Difference]: Without dead ends: 115749 [2023-12-15 18:14:29,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:29,137 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 477 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:29,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 51 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:14:29,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115749 states. [2023-12-15 18:14:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115749 to 113674. [2023-12-15 18:14:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113674 states, 113673 states have (on average 1.1489271858752739) internal successors, (130602), 113673 states have internal predecessors, (130602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113674 states to 113674 states and 130602 transitions. [2023-12-15 18:14:30,604 INFO L78 Accepts]: Start accepts. Automaton has 113674 states and 130602 transitions. Word has length 311 [2023-12-15 18:14:30,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:30,604 INFO L495 AbstractCegarLoop]: Abstraction has 113674 states and 130602 transitions. [2023-12-15 18:14:30,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:30,605 INFO L276 IsEmpty]: Start isEmpty. Operand 113674 states and 130602 transitions. [2023-12-15 18:14:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-15 18:14:30,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:30,620 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:30,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:14:30,620 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:30,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1648314811, now seen corresponding path program 1 times [2023-12-15 18:14:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:30,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400712161] [2023-12-15 18:14:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 148 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 18:14:31,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:31,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400712161] [2023-12-15 18:14:31,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400712161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:14:31,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482137289] [2023-12-15 18:14:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:31,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:14:31,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:14:31,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:14:31,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:14:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:31,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:14:31,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:14:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 18:14:31,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:14:31,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482137289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:31,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:14:31,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:14:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769562756] [2023-12-15 18:14:31,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:31,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:14:31,634 INFO L87 Difference]: Start difference. First operand 113674 states and 130602 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:32,594 INFO L93 Difference]: Finished difference Result 230227 states and 264575 transitions. [2023-12-15 18:14:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:32,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2023-12-15 18:14:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:32,722 INFO L225 Difference]: With dead ends: 230227 [2023-12-15 18:14:32,722 INFO L226 Difference]: Without dead ends: 116554 [2023-12-15 18:14:32,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:14:32,778 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 52 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:32,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 328 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:14:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116554 states. [2023-12-15 18:14:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116554 to 114892. [2023-12-15 18:14:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114892 states, 114891 states have (on average 1.1443890296019705) internal successors, (131480), 114891 states have internal predecessors, (131480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114892 states to 114892 states and 131480 transitions. [2023-12-15 18:14:34,414 INFO L78 Accepts]: Start accepts. Automaton has 114892 states and 131480 transitions. Word has length 322 [2023-12-15 18:14:34,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:34,415 INFO L495 AbstractCegarLoop]: Abstraction has 114892 states and 131480 transitions. [2023-12-15 18:14:34,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 114892 states and 131480 transitions. [2023-12-15 18:14:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-15 18:14:34,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:34,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:34,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:14:34,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 18:14:34,630 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:34,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash -129043089, now seen corresponding path program 1 times [2023-12-15 18:14:34,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:34,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623247719] [2023-12-15 18:14:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:34,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 151 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 18:14:35,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:35,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623247719] [2023-12-15 18:14:35,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623247719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:14:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949528574] [2023-12-15 18:14:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:35,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:14:35,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:14:35,155 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) [2023-12-15 18:14:35,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:14:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:35,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:14:35,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:14:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 18:14:35,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:14:35,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949528574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:35,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:14:35,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-12-15 18:14:35,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140787968] [2023-12-15 18:14:35,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:35,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:35,784 INFO L87 Difference]: Start difference. First operand 114892 states and 131480 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:36,903 INFO L93 Difference]: Finished difference Result 262919 states and 300468 transitions. [2023-12-15 18:14:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:36,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 325 [2023-12-15 18:14:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:37,105 INFO L225 Difference]: With dead ends: 262919 [2023-12-15 18:14:37,105 INFO L226 Difference]: Without dead ends: 148028 [2023-12-15 18:14:37,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:37,165 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 105 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:37,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 144 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:14:37,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148028 states. [2023-12-15 18:14:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148028 to 136443. [2023-12-15 18:14:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136443 states, 136442 states have (on average 1.147952976356254) internal successors, (156629), 136442 states have internal predecessors, (156629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136443 states to 136443 states and 156629 transitions. [2023-12-15 18:14:39,337 INFO L78 Accepts]: Start accepts. Automaton has 136443 states and 156629 transitions. Word has length 325 [2023-12-15 18:14:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:39,337 INFO L495 AbstractCegarLoop]: Abstraction has 136443 states and 156629 transitions. [2023-12-15 18:14:39,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 136443 states and 156629 transitions. [2023-12-15 18:14:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 18:14:39,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:39,356 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:39,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 18:14:39,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:14:39,561 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:39,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:39,561 INFO L85 PathProgramCache]: Analyzing trace with hash 585039581, now seen corresponding path program 1 times [2023-12-15 18:14:39,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:39,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761104238] [2023-12-15 18:14:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:39,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 172 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-15 18:14:40,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:40,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761104238] [2023-12-15 18:14:40,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761104238] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:14:40,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580608990] [2023-12-15 18:14:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:40,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:14:40,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:14:40,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:14:40,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:14:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:40,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:14:40,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:14:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 18:14:40,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:14:40,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580608990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:40,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:14:40,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:14:40,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209894252] [2023-12-15 18:14:40,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:40,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:14:40,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:14:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:14:40,324 INFO L87 Difference]: Start difference. First operand 136443 states and 156629 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:41,360 INFO L93 Difference]: Finished difference Result 269852 states and 309874 transitions. [2023-12-15 18:14:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:14:41,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2023-12-15 18:14:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:41,527 INFO L225 Difference]: With dead ends: 269852 [2023-12-15 18:14:41,527 INFO L226 Difference]: Without dead ends: 133410 [2023-12-15 18:14:41,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:14:41,597 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 79 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:41,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 94 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:14:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133410 states. [2023-12-15 18:14:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133410 to 131165. [2023-12-15 18:14:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131165 states, 131164 states have (on average 1.1274892500991125) internal successors, (147886), 131164 states have internal predecessors, (147886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131165 states to 131165 states and 147886 transitions. [2023-12-15 18:14:43,446 INFO L78 Accepts]: Start accepts. Automaton has 131165 states and 147886 transitions. Word has length 332 [2023-12-15 18:14:43,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:43,446 INFO L495 AbstractCegarLoop]: Abstraction has 131165 states and 147886 transitions. [2023-12-15 18:14:43,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:43,447 INFO L276 IsEmpty]: Start isEmpty. Operand 131165 states and 147886 transitions. [2023-12-15 18:14:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-15 18:14:43,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:43,488 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:14:43,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 18:14:43,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 18:14:43,696 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:43,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1185844008, now seen corresponding path program 1 times [2023-12-15 18:14:43,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:43,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343822451] [2023-12-15 18:14:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 183 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 18:14:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343822451] [2023-12-15 18:14:44,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343822451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:14:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254318615] [2023-12-15 18:14:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:44,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:14:44,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:14:44,268 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:14:44,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 18:14:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:44,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:14:44,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:14:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 18:14:45,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:14:45,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254318615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:45,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:14:45,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:14:45,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248659232] [2023-12-15 18:14:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:14:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:14:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:14:45,215 INFO L87 Difference]: Start difference. First operand 131165 states and 147886 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:46,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:46,810 INFO L93 Difference]: Finished difference Result 377692 states and 423946 transitions. [2023-12-15 18:14:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:14:46,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 357 [2023-12-15 18:14:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:47,401 INFO L225 Difference]: With dead ends: 377692 [2023-12-15 18:14:47,402 INFO L226 Difference]: Without dead ends: 246528 [2023-12-15 18:14:47,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:14:47,444 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 421 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:47,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 263 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:14:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246528 states. [2023-12-15 18:14:50,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246528 to 238794. [2023-12-15 18:14:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238794 states, 238793 states have (on average 1.1203301604318385) internal successors, (267527), 238793 states have internal predecessors, (267527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238794 states to 238794 states and 267527 transitions. [2023-12-15 18:14:50,687 INFO L78 Accepts]: Start accepts. Automaton has 238794 states and 267527 transitions. Word has length 357 [2023-12-15 18:14:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:50,688 INFO L495 AbstractCegarLoop]: Abstraction has 238794 states and 267527 transitions. [2023-12-15 18:14:50,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 238794 states and 267527 transitions. [2023-12-15 18:14:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-15 18:14:51,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:51,007 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:14:51,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 18:14:51,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 18:14:51,212 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:51,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:51,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1681510081, now seen corresponding path program 1 times [2023-12-15 18:14:51,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:51,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255973514] [2023-12-15 18:14:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:51,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:14:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-15 18:14:51,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:14:51,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255973514] [2023-12-15 18:14:51,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255973514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:14:51,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:14:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:14:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827412062] [2023-12-15 18:14:51,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:14:51,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:14:51,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:14:51,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:14:51,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:51,490 INFO L87 Difference]: Start difference. First operand 238794 states and 267527 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:14:53,824 INFO L93 Difference]: Finished difference Result 580656 states and 647918 transitions. [2023-12-15 18:14:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:14:53,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 401 [2023-12-15 18:14:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:14:54,596 INFO L225 Difference]: With dead ends: 580656 [2023-12-15 18:14:54,597 INFO L226 Difference]: Without dead ends: 341863 [2023-12-15 18:14:54,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:14:54,777 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 462 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:14:54,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 429 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:14:55,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341863 states. [2023-12-15 18:14:58,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341863 to 328023. [2023-12-15 18:14:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328023 states, 328022 states have (on average 1.1134222704574692) internal successors, (365227), 328022 states have internal predecessors, (365227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328023 states to 328023 states and 365227 transitions. [2023-12-15 18:14:59,566 INFO L78 Accepts]: Start accepts. Automaton has 328023 states and 365227 transitions. Word has length 401 [2023-12-15 18:14:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:14:59,566 INFO L495 AbstractCegarLoop]: Abstraction has 328023 states and 365227 transitions. [2023-12-15 18:14:59,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:14:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 328023 states and 365227 transitions. [2023-12-15 18:14:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-15 18:14:59,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:14:59,596 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:14:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:14:59,597 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:14:59,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:14:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1926710494, now seen corresponding path program 1 times [2023-12-15 18:14:59,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:14:59,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139970932] [2023-12-15 18:14:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:14:59,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:14:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-15 18:15:00,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139970932] [2023-12-15 18:15:00,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139970932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:00,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:00,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:15:00,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372072835] [2023-12-15 18:15:00,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:00,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:00,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:00,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:00,099 INFO L87 Difference]: Start difference. First operand 328023 states and 365227 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 18:15:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:02,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:02,328 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 167 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:02,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 351 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:15:02,333 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:15:02,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:15:02,334 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (328023states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (601010 states constructed, input type IntersectNwa). [2023-12-15 18:15:02,337 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:02,346 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:15:02,348 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:15:02,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:15:02 BoogieIcfgContainer [2023-12-15 18:15:02,356 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:15:02,356 INFO L158 Benchmark]: Toolchain (without parser) took 56247.48ms. Allocated memory was 331.4MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 285.1MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-15 18:15:02,356 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:15:02,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.21ms. Allocated memory is still 331.4MB. Free memory was 284.6MB in the beginning and 287.1MB in the end (delta: -2.5MB). Peak memory consumption was 75.0MB. Max. memory is 8.0GB. [2023-12-15 18:15:02,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.15ms. Allocated memory is still 331.4MB. Free memory was 287.1MB in the beginning and 271.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 18:15:02,361 INFO L158 Benchmark]: Boogie Preprocessor took 126.30ms. Allocated memory is still 331.4MB. Free memory was 271.9MB in the beginning and 259.8MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 18:15:02,361 INFO L158 Benchmark]: RCFGBuilder took 1317.72ms. Allocated memory is still 331.4MB. Free memory was 259.3MB in the beginning and 150.0MB in the end (delta: 109.3MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. [2023-12-15 18:15:02,361 INFO L158 Benchmark]: TraceAbstraction took 53978.45ms. Allocated memory was 331.4MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 148.9MB in the beginning and 5.7GB in the end (delta: -5.6GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-15 18:15:02,365 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 197.1MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 750.21ms. Allocated memory is still 331.4MB. Free memory was 284.6MB in the beginning and 287.1MB in the end (delta: -2.5MB). Peak memory consumption was 75.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 69.15ms. Allocated memory is still 331.4MB. Free memory was 287.1MB in the beginning and 271.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 126.30ms. Allocated memory is still 331.4MB. Free memory was 271.9MB in the beginning and 259.8MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1317.72ms. Allocated memory is still 331.4MB. Free memory was 259.3MB in the beginning and 150.0MB in the end (delta: 109.3MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. * TraceAbstraction took 53978.45ms. Allocated memory was 331.4MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 148.9MB in the beginning and 5.7GB in the end (delta: -5.6GB). Peak memory consumption was 2.2GB. 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: 1561]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1561). Cancelled while NwaCegarLoop was constructing difference of abstraction (328023states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (601010 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.9s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 23.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4543 SdHoareTripleChecker+Valid, 11.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4543 mSDsluCounter, 4821 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1052 mSDsCounter, 2279 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12442 IncrementalHoareTripleChecker+Invalid, 14721 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2279 mSolverCounterUnsat, 3769 mSDtfsCounter, 12442 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1657 GetRequests, 1624 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328023occurred in iteration=19, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.7s AutomataMinimizationTime, 19 MinimizatonAttempts, 51062 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 6952 NumberOfCodeBlocks, 6952 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 6927 ConstructedInterpolants, 0 QuantifiedInterpolants, 22068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2782 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 25 InterpolantComputations, 20 PerfectInterpolantSequences, 3332/3481 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