/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 13:47:46,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 13:47:47,054 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 13:47:47,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 13:47:47,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 13:47:47,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 13:47:47,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 13:47:47,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 13:47:47,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 13:47:47,084 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 13:47:47,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 13:47:47,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 13:47:47,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 13:47:47,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 13:47:47,086 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 13:47:47,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 13:47:47,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 13:47:47,086 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 13:47:47,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 13:47:47,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 13:47:47,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 13:47:47,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 13:47:47,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 13:47:47,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 13:47:47,087 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 13:47:47,087 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 13:47:47,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 13:47:47,088 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 13:47:47,088 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 13:47:47,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 13:47:47,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 13:47:47,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 13:47:47,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:47:47,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 13:47:47,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 13:47:47,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 13:47:47,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 13:47:47,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 13:47:47,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 13:47:47,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 13:47:47,090 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 13:47:47,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 13:47:47,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 13:47:47,090 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 13:47:47,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 13:47:47,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 13:47:47,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 13:47:47,396 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 13:47:47,397 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 13:47:47,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-20 13:47:48,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 13:47:49,025 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 13:47:49,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-20 13:47:49,050 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819a30eaf/74fddfaf386f44fd8310787070f2bf75/FLAG100908e4e [2023-12-20 13:47:49,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819a30eaf/74fddfaf386f44fd8310787070f2bf75 [2023-12-20 13:47:49,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 13:47:49,244 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 13:47:49,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 13:47:49,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 13:47:49,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 13:47:49,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:47:49" (1/1) ... [2023-12-20 13:47:49,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1842bad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:49, skipping insertion in model container [2023-12-20 13:47:49,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:47:49" (1/1) ... [2023-12-20 13:47:49,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 13:47:49,583 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c[11668,11681] [2023-12-20 13:47:49,604 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c[12510,12523] [2023-12-20 13:47:50,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:47:50,101 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 13:47:50,135 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c[11668,11681] [2023-12-20 13:47:50,139 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c[12510,12523] [2023-12-20 13:47:50,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:47:50,471 INFO L206 MainTranslator]: Completed translation [2023-12-20 13:47:50,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50 WrapperNode [2023-12-20 13:47:50,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 13:47:50,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 13:47:50,472 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 13:47:50,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 13:47:50,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:50,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:50,724 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5092 [2023-12-20 13:47:50,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 13:47:50,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 13:47:50,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 13:47:50,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 13:47:50,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:50,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:50,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:50,993 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]. [2023-12-20 13:47:50,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:50,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:51,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:51,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:51,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:51,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:51,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 13:47:51,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 13:47:51,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 13:47:51,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 13:47:51,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (1/1) ... [2023-12-20 13:47:51,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:47:51,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:47:51,333 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) [2023-12-20 13:47:51,340 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 [2023-12-20 13:47:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 13:47:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 13:47:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 13:47:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 13:47:51,427 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 13:47:51,428 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 13:47:54,338 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 13:47:54,376 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 13:47:54,377 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 13:47:54,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:47:54 BoogieIcfgContainer [2023-12-20 13:47:54,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 13:47:54,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 13:47:54,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 13:47:54,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 13:47:54,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:47:49" (1/3) ... [2023-12-20 13:47:54,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c81be4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:47:54, skipping insertion in model container [2023-12-20 13:47:54,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:47:50" (2/3) ... [2023-12-20 13:47:54,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c81be4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:47:54, skipping insertion in model container [2023-12-20 13:47:54,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:47:54" (3/3) ... [2023-12-20 13:47:54,384 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-20 13:47:54,396 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 13:47:54,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 13:47:54,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 13:47:54,445 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;@1b7df9e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 13:47:54,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 13:47:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-20 13:47:54,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:54,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-20 13:47:54,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:54,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1134883547, now seen corresponding path program 1 times [2023-12-20 13:47:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:54,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376777387] [2023-12-20 13:47:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:54,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:54,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376777387] [2023-12-20 13:47:54,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376777387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:54,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:54,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:47:54,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691863391] [2023-12-20 13:47:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:47:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:47:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:47:54,625 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:57,711 INFO L93 Difference]: Finished difference Result 2390 states and 4722 transitions. [2023-12-20 13:47:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:47:57,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-20 13:47:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:57,740 INFO L225 Difference]: With dead ends: 2390 [2023-12-20 13:47:57,741 INFO L226 Difference]: Without dead ends: 1583 [2023-12-20 13:47:57,752 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 [2023-12-20 13:47:57,756 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 947 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:57,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 213 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 13:47:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2023-12-20 13:47:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2023-12-20 13:47:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1581 states have (on average 1.8652751423149905) internal successors, (2949), 1582 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2949 transitions. [2023-12-20 13:47:57,856 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2949 transitions. Word has length 6 [2023-12-20 13:47:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:57,856 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2949 transitions. [2023-12-20 13:47:57,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2949 transitions. [2023-12-20 13:47:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:47:57,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:57,858 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] [2023-12-20 13:47:57,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 13:47:57,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:57,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash 106777515, now seen corresponding path program 1 times [2023-12-20 13:47:57,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:57,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444969711] [2023-12-20 13:47:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:58,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:58,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444969711] [2023-12-20 13:47:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444969711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:47:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924090480] [2023-12-20 13:47:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:58,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:47:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:47:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:47:58,079 INFO L87 Difference]: Start difference. First operand 1583 states and 2949 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:58,142 INFO L93 Difference]: Finished difference Result 1629 states and 3021 transitions. [2023-12-20 13:47:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:47:58,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-20 13:47:58,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:58,147 INFO L225 Difference]: With dead ends: 1629 [2023-12-20 13:47:58,147 INFO L226 Difference]: Without dead ends: 1583 [2023-12-20 13:47:58,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:47:58,149 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:58,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2023-12-20 13:47:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2023-12-20 13:47:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1581 states have (on average 1.8456672991777356) internal successors, (2918), 1582 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2918 transitions. [2023-12-20 13:47:58,178 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2918 transitions. Word has length 21 [2023-12-20 13:47:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:58,178 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2918 transitions. [2023-12-20 13:47:58,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2918 transitions. [2023-12-20 13:47:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 13:47:58,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:58,181 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] [2023-12-20 13:47:58,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 13:47:58,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:58,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1212971778, now seen corresponding path program 1 times [2023-12-20 13:47:58,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:58,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649130956] [2023-12-20 13:47:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:58,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649130956] [2023-12-20 13:47:58,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649130956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:58,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:58,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:47:58,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475287113] [2023-12-20 13:47:58,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:47:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:47:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:47:58,349 INFO L87 Difference]: Start difference. First operand 1583 states and 2918 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:58,503 INFO L93 Difference]: Finished difference Result 2013 states and 3608 transitions. [2023-12-20 13:47:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 13:47:58,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-20 13:47:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:58,509 INFO L225 Difference]: With dead ends: 2013 [2023-12-20 13:47:58,510 INFO L226 Difference]: Without dead ends: 1970 [2023-12-20 13:47:58,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 13:47:58,513 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:58,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:47:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2023-12-20 13:47:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1624. [2023-12-20 13:47:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8397040690505548) internal successors, (2984), 1623 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2984 transitions. [2023-12-20 13:47:58,587 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2984 transitions. Word has length 51 [2023-12-20 13:47:58,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:58,592 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2984 transitions. [2023-12-20 13:47:58,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2984 transitions. [2023-12-20 13:47:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:47:58,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:58,597 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] [2023-12-20 13:47:58,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 13:47:58,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:58,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:58,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1583069298, now seen corresponding path program 1 times [2023-12-20 13:47:58,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:58,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548664625] [2023-12-20 13:47:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:58,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:58,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:58,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548664625] [2023-12-20 13:47:58,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548664625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:58,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:58,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:47:58,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148582939] [2023-12-20 13:47:58,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:58,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:47:58,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:47:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:47:58,645 INFO L87 Difference]: Start difference. First operand 1624 states and 2984 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:58,674 INFO L93 Difference]: Finished difference Result 1781 states and 3235 transitions. [2023-12-20 13:47:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:47:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 13:47:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:58,679 INFO L225 Difference]: With dead ends: 1781 [2023-12-20 13:47:58,679 INFO L226 Difference]: Without dead ends: 1697 [2023-12-20 13:47:58,679 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 [2023-12-20 13:47:58,680 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:58,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-12-20 13:47:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1693. [2023-12-20 13:47:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8285038438793613) internal successors, (3092), 1692 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3092 transitions. [2023-12-20 13:47:58,702 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3092 transitions. Word has length 53 [2023-12-20 13:47:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:58,702 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 3092 transitions. [2023-12-20 13:47:58,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3092 transitions. [2023-12-20 13:47:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:47:58,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:58,703 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] [2023-12-20 13:47:58,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 13:47:58,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:58,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1585214250, now seen corresponding path program 1 times [2023-12-20 13:47:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:58,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831668502] [2023-12-20 13:47:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:58,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831668502] [2023-12-20 13:47:58,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831668502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:58,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:58,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:47:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2448859] [2023-12-20 13:47:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:58,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:47:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:47:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:47:58,848 INFO L87 Difference]: Start difference. First operand 1693 states and 3092 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:58,982 INFO L93 Difference]: Finished difference Result 1848 states and 3336 transitions. [2023-12-20 13:47:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:47:58,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 13:47:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:58,987 INFO L225 Difference]: With dead ends: 1848 [2023-12-20 13:47:58,987 INFO L226 Difference]: Without dead ends: 1695 [2023-12-20 13:47:58,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 13:47:58,988 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7454 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7454 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:58,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7454 Valid, 1790 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-12-20 13:47:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2023-12-20 13:47:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8273211117681845) internal successors, (3090), 1692 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3090 transitions. [2023-12-20 13:47:59,010 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3090 transitions. Word has length 53 [2023-12-20 13:47:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:59,010 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 3090 transitions. [2023-12-20 13:47:59,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3090 transitions. [2023-12-20 13:47:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 13:47:59,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:59,011 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] [2023-12-20 13:47:59,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 13:47:59,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:59,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1767897232, now seen corresponding path program 1 times [2023-12-20 13:47:59,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986366789] [2023-12-20 13:47:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:59,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986366789] [2023-12-20 13:47:59,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986366789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:59,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:59,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:47:59,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980532846] [2023-12-20 13:47:59,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:47:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:47:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:47:59,157 INFO L87 Difference]: Start difference. First operand 1693 states and 3090 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:59,187 INFO L93 Difference]: Finished difference Result 1701 states and 3099 transitions. [2023-12-20 13:47:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:47:59,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-20 13:47:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:59,192 INFO L225 Difference]: With dead ends: 1701 [2023-12-20 13:47:59,193 INFO L226 Difference]: Without dead ends: 1699 [2023-12-20 13:47:59,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:47:59,196 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:59,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:59,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-12-20 13:47:59,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2023-12-20 13:47:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.8247787610619468) internal successors, (3093), 1696 states have internal predecessors, (3093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 3093 transitions. [2023-12-20 13:47:59,224 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 3093 transitions. Word has length 54 [2023-12-20 13:47:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:59,224 INFO L495 AbstractCegarLoop]: Abstraction has 1697 states and 3093 transitions. [2023-12-20 13:47:59,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 3093 transitions. [2023-12-20 13:47:59,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:47:59,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:59,226 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] [2023-12-20 13:47:59,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 13:47:59,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:59,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:59,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112714, now seen corresponding path program 1 times [2023-12-20 13:47:59,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454303297] [2023-12-20 13:47:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:59,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:59,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:59,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454303297] [2023-12-20 13:47:59,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454303297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:59,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:59,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:47:59,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554552474] [2023-12-20 13:47:59,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:59,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:47:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:47:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:47:59,286 INFO L87 Difference]: Start difference. First operand 1697 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:59,310 INFO L93 Difference]: Finished difference Result 1995 states and 3553 transitions. [2023-12-20 13:47:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:47:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:47:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:59,317 INFO L225 Difference]: With dead ends: 1995 [2023-12-20 13:47:59,317 INFO L226 Difference]: Without dead ends: 1838 [2023-12-20 13:47:59,318 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 [2023-12-20 13:47:59,319 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:59,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2023-12-20 13:47:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2023-12-20 13:47:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1834 states have (on average 1.8015267175572518) internal successors, (3304), 1835 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 3304 transitions. [2023-12-20 13:47:59,345 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 3304 transitions. Word has length 55 [2023-12-20 13:47:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:59,345 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 3304 transitions. [2023-12-20 13:47:59,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 3304 transitions. [2023-12-20 13:47:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:47:59,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:59,346 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] [2023-12-20 13:47:59,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 13:47:59,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:59,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1963056650, now seen corresponding path program 1 times [2023-12-20 13:47:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408381219] [2023-12-20 13:47:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:59,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:59,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408381219] [2023-12-20 13:47:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408381219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:59,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:59,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:47:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486255280] [2023-12-20 13:47:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:59,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:47:59,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:47:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:47:59,377 INFO L87 Difference]: Start difference. First operand 1836 states and 3304 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:59,404 INFO L93 Difference]: Finished difference Result 2396 states and 4158 transitions. [2023-12-20 13:47:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:47:59,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:47:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:59,410 INFO L225 Difference]: With dead ends: 2396 [2023-12-20 13:47:59,410 INFO L226 Difference]: Without dead ends: 2100 [2023-12-20 13:47:59,411 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 [2023-12-20 13:47:59,411 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:59,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:59,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2023-12-20 13:47:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2098. [2023-12-20 13:47:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2096 states have (on average 1.7624045801526718) internal successors, (3694), 2097 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3694 transitions. [2023-12-20 13:47:59,441 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3694 transitions. Word has length 55 [2023-12-20 13:47:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:59,441 INFO L495 AbstractCegarLoop]: Abstraction has 2098 states and 3694 transitions. [2023-12-20 13:47:59,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3694 transitions. [2023-12-20 13:47:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:47:59,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:59,442 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] [2023-12-20 13:47:59,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 13:47:59,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:59,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1337400586, now seen corresponding path program 1 times [2023-12-20 13:47:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:59,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171033255] [2023-12-20 13:47:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:59,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:59,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171033255] [2023-12-20 13:47:59,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171033255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:59,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:59,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:47:59,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685916231] [2023-12-20 13:47:59,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:59,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:47:59,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:59,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:47:59,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:47:59,472 INFO L87 Difference]: Start difference. First operand 2098 states and 3694 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:59,506 INFO L93 Difference]: Finished difference Result 3150 states and 5272 transitions. [2023-12-20 13:47:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:47:59,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:47:59,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:59,513 INFO L225 Difference]: With dead ends: 3150 [2023-12-20 13:47:59,513 INFO L226 Difference]: Without dead ends: 2592 [2023-12-20 13:47:59,514 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 [2023-12-20 13:47:59,514 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:59,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2023-12-20 13:47:59,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2590. [2023-12-20 13:47:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2588 states have (on average 1.704018547140649) internal successors, (4410), 2589 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 4410 transitions. [2023-12-20 13:47:59,557 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 4410 transitions. Word has length 55 [2023-12-20 13:47:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:59,557 INFO L495 AbstractCegarLoop]: Abstraction has 2590 states and 4410 transitions. [2023-12-20 13:47:59,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 4410 transitions. [2023-12-20 13:47:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:47:59,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:59,558 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] [2023-12-20 13:47:59,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 13:47:59,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:59,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2068833270, now seen corresponding path program 1 times [2023-12-20 13:47:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:59,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765793977] [2023-12-20 13:47:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:59,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:59,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765793977] [2023-12-20 13:47:59,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765793977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:59,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:59,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:47:59,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865224085] [2023-12-20 13:47:59,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:59,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:47:59,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:59,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:47:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:47:59,590 INFO L87 Difference]: Start difference. First operand 2590 states and 4410 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:59,636 INFO L93 Difference]: Finished difference Result 4562 states and 7308 transitions. [2023-12-20 13:47:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:47:59,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:47:59,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:59,646 INFO L225 Difference]: With dead ends: 4562 [2023-12-20 13:47:59,646 INFO L226 Difference]: Without dead ends: 3512 [2023-12-20 13:47:59,648 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 [2023-12-20 13:47:59,648 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:59,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2023-12-20 13:47:59,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3510. [2023-12-20 13:47:59,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3508 states have (on average 1.62884834663626) internal successors, (5714), 3509 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5714 transitions. [2023-12-20 13:47:59,755 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5714 transitions. Word has length 55 [2023-12-20 13:47:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:59,755 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5714 transitions. [2023-12-20 13:47:59,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5714 transitions. [2023-12-20 13:47:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 13:47:59,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:59,756 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] [2023-12-20 13:47:59,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 13:47:59,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:59,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:59,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1474848977, now seen corresponding path program 1 times [2023-12-20 13:47:59,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:59,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495150860] [2023-12-20 13:47:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:59,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:59,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:59,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495150860] [2023-12-20 13:47:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495150860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:47:59,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:47:59,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:47:59,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284794306] [2023-12-20 13:47:59,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:47:59,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:47:59,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:47:59,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:47:59,791 INFO L87 Difference]: Start difference. First operand 3510 states and 5714 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:59,860 INFO L93 Difference]: Finished difference Result 5565 states and 8760 transitions. [2023-12-20 13:47:59,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:47:59,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-20 13:47:59,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:59,872 INFO L225 Difference]: With dead ends: 5565 [2023-12-20 13:47:59,872 INFO L226 Difference]: Without dead ends: 4442 [2023-12-20 13:47:59,873 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 [2023-12-20 13:47:59,874 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:59,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:47:59,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2023-12-20 13:47:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4440. [2023-12-20 13:47:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4438 states have (on average 1.587201442091032) internal successors, (7044), 4439 states have internal predecessors, (7044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 7044 transitions. [2023-12-20 13:47:59,971 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 7044 transitions. Word has length 57 [2023-12-20 13:47:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:59,971 INFO L495 AbstractCegarLoop]: Abstraction has 4440 states and 7044 transitions. [2023-12-20 13:47:59,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:59,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 7044 transitions. [2023-12-20 13:47:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:47:59,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:59,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:47:59,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 13:47:59,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:59,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1067448203, now seen corresponding path program 1 times [2023-12-20 13:47:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:59,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103286700] [2023-12-20 13:47:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 13:48:00,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:00,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103286700] [2023-12-20 13:48:00,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103286700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:00,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:00,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:48:00,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140029290] [2023-12-20 13:48:00,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:00,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:48:00,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:48:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:48:00,079 INFO L87 Difference]: Start difference. First operand 4440 states and 7044 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:00,419 INFO L93 Difference]: Finished difference Result 19540 states and 28858 transitions. [2023-12-20 13:48:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:48:00,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-12-20 13:48:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:00,442 INFO L225 Difference]: With dead ends: 19540 [2023-12-20 13:48:00,443 INFO L226 Difference]: Without dead ends: 16642 [2023-12-20 13:48:00,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:48:00,450 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 6314 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:00,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3633 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:48:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16642 states. [2023-12-20 13:48:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16642 to 7336. [2023-12-20 13:48:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 7334 states have (on average 1.5254976820289066) internal successors, (11188), 7335 states have internal predecessors, (11188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 11188 transitions. [2023-12-20 13:48:00,708 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 11188 transitions. Word has length 73 [2023-12-20 13:48:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:00,708 INFO L495 AbstractCegarLoop]: Abstraction has 7336 states and 11188 transitions. [2023-12-20 13:48:00,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 11188 transitions. [2023-12-20 13:48:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:48:00,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:00,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:00,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 13:48:00,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:00,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:00,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1107392139, now seen corresponding path program 1 times [2023-12-20 13:48:00,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:00,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438864451] [2023-12-20 13:48:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:00,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 13:48:00,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438864451] [2023-12-20 13:48:00,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438864451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:00,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:00,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:48:00,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6019735] [2023-12-20 13:48:00,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:00,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:48:00,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:48:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:48:00,810 INFO L87 Difference]: Start difference. First operand 7336 states and 11188 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:01,165 INFO L93 Difference]: Finished difference Result 22436 states and 33002 transitions. [2023-12-20 13:48:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:48:01,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-12-20 13:48:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:01,192 INFO L225 Difference]: With dead ends: 22436 [2023-12-20 13:48:01,192 INFO L226 Difference]: Without dead ends: 19538 [2023-12-20 13:48:01,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:48:01,201 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6342 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6342 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:01,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6342 Valid, 3536 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:48:01,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19538 states. [2023-12-20 13:48:01,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19538 to 11688. [2023-12-20 13:48:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11688 states, 11686 states have (on average 1.4858805408180729) internal successors, (17364), 11687 states have internal predecessors, (17364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11688 states to 11688 states and 17364 transitions. [2023-12-20 13:48:01,496 INFO L78 Accepts]: Start accepts. Automaton has 11688 states and 17364 transitions. Word has length 73 [2023-12-20 13:48:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:01,496 INFO L495 AbstractCegarLoop]: Abstraction has 11688 states and 17364 transitions. [2023-12-20 13:48:01,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 11688 states and 17364 transitions. [2023-12-20 13:48:01,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:48:01,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:01,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:01,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 13:48:01,498 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:01,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash 481736075, now seen corresponding path program 1 times [2023-12-20 13:48:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:01,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783501186] [2023-12-20 13:48:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:01,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 13:48:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783501186] [2023-12-20 13:48:01,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783501186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:01,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:01,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:48:01,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674015743] [2023-12-20 13:48:01,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:01,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:48:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:48:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:48:01,594 INFO L87 Difference]: Start difference. First operand 11688 states and 17364 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:02,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:02,067 INFO L93 Difference]: Finished difference Result 25332 states and 37146 transitions. [2023-12-20 13:48:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:48:02,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-12-20 13:48:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:02,097 INFO L225 Difference]: With dead ends: 25332 [2023-12-20 13:48:02,097 INFO L226 Difference]: Without dead ends: 22434 [2023-12-20 13:48:02,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:48:02,106 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 6378 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6378 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:02,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6378 Valid, 3538 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:48:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22434 states. [2023-12-20 13:48:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22434 to 14584. [2023-12-20 13:48:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14584 states, 14582 states have (on average 1.4749691400356604) internal successors, (21508), 14583 states have internal predecessors, (21508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14584 states to 14584 states and 21508 transitions. [2023-12-20 13:48:02,466 INFO L78 Accepts]: Start accepts. Automaton has 14584 states and 21508 transitions. Word has length 73 [2023-12-20 13:48:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:02,466 INFO L495 AbstractCegarLoop]: Abstraction has 14584 states and 21508 transitions. [2023-12-20 13:48:02,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 14584 states and 21508 transitions. [2023-12-20 13:48:02,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:48:02,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:02,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:02,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 13:48:02,468 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:02,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1370469515, now seen corresponding path program 1 times [2023-12-20 13:48:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343379583] [2023-12-20 13:48:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 13:48:02,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:02,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343379583] [2023-12-20 13:48:02,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343379583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:02,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:02,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:48:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419928675] [2023-12-20 13:48:02,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:02,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:48:02,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:02,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:48:02,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:48:02,567 INFO L87 Difference]: Start difference. First operand 14584 states and 21508 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:03,059 INFO L93 Difference]: Finished difference Result 28228 states and 41290 transitions. [2023-12-20 13:48:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:48:03,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-12-20 13:48:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:03,096 INFO L225 Difference]: With dead ends: 28228 [2023-12-20 13:48:03,096 INFO L226 Difference]: Without dead ends: 25330 [2023-12-20 13:48:03,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:48:03,109 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 6329 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6329 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:03,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6329 Valid, 3586 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:48:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25330 states. [2023-12-20 13:48:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25330 to 17480. [2023-12-20 13:48:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17480 states, 17478 states have (on average 1.4676736468703513) internal successors, (25652), 17479 states have internal predecessors, (25652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17480 states to 17480 states and 25652 transitions. [2023-12-20 13:48:03,578 INFO L78 Accepts]: Start accepts. Automaton has 17480 states and 25652 transitions. Word has length 73 [2023-12-20 13:48:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:03,578 INFO L495 AbstractCegarLoop]: Abstraction has 17480 states and 25652 transitions. [2023-12-20 13:48:03,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 17480 states and 25652 transitions. [2023-12-20 13:48:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 13:48:03,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:03,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:03,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 13:48:03,581 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:03,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:03,581 INFO L85 PathProgramCache]: Analyzing trace with hash -823987853, now seen corresponding path program 1 times [2023-12-20 13:48:03,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:03,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699151434] [2023-12-20 13:48:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:03,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:03,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699151434] [2023-12-20 13:48:03,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699151434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:03,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:03,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:48:03,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129314371] [2023-12-20 13:48:03,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:03,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:48:03,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:03,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:48:03,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:48:03,665 INFO L87 Difference]: Start difference. First operand 17480 states and 25652 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:03,960 INFO L93 Difference]: Finished difference Result 28767 states and 42042 transitions. [2023-12-20 13:48:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:48:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-20 13:48:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:03,978 INFO L225 Difference]: With dead ends: 28767 [2023-12-20 13:48:03,978 INFO L226 Difference]: Without dead ends: 12829 [2023-12-20 13:48:03,994 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 [2023-12-20 13:48:03,995 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:03,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:48:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12829 states. [2023-12-20 13:48:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12829 to 12827. [2023-12-20 13:48:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 12825 states have (on average 1.486393762183236) internal successors, (19063), 12826 states have internal predecessors, (19063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:04,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 19063 transitions. [2023-12-20 13:48:04,260 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 19063 transitions. Word has length 75 [2023-12-20 13:48:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:04,260 INFO L495 AbstractCegarLoop]: Abstraction has 12827 states and 19063 transitions. [2023-12-20 13:48:04,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 19063 transitions. [2023-12-20 13:48:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 13:48:04,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:04,261 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:48:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 13:48:04,261 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:04,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash 865276784, now seen corresponding path program 1 times [2023-12-20 13:48:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:04,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324845766] [2023-12-20 13:48:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:48:04,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:04,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324845766] [2023-12-20 13:48:04,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324845766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:04,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:04,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:48:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595128472] [2023-12-20 13:48:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:04,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:48:04,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:48:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:48:04,365 INFO L87 Difference]: Start difference. First operand 12827 states and 19063 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:04,822 INFO L93 Difference]: Finished difference Result 23079 states and 33949 transitions. [2023-12-20 13:48:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:48:04,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 75 [2023-12-20 13:48:04,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:04,847 INFO L225 Difference]: With dead ends: 23079 [2023-12-20 13:48:04,847 INFO L226 Difference]: Without dead ends: 21029 [2023-12-20 13:48:04,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:48:04,851 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:04,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:48:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21029 states. [2023-12-20 13:48:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21029 to 14875. [2023-12-20 13:48:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14875 states, 14873 states have (on average 1.4796611309083574) internal successors, (22007), 14874 states have internal predecessors, (22007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14875 states to 14875 states and 22007 transitions. [2023-12-20 13:48:05,179 INFO L78 Accepts]: Start accepts. Automaton has 14875 states and 22007 transitions. Word has length 75 [2023-12-20 13:48:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:05,180 INFO L495 AbstractCegarLoop]: Abstraction has 14875 states and 22007 transitions. [2023-12-20 13:48:05,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 14875 states and 22007 transitions. [2023-12-20 13:48:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 13:48:05,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:05,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:05,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 13:48:05,182 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:05,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2077236487, now seen corresponding path program 1 times [2023-12-20 13:48:05,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:05,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055544155] [2023-12-20 13:48:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:05,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:05,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:05,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055544155] [2023-12-20 13:48:05,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055544155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:05,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:05,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:48:05,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492030624] [2023-12-20 13:48:05,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:05,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:48:05,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:05,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:48:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:48:05,245 INFO L87 Difference]: Start difference. First operand 14875 states and 22007 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:05,376 INFO L93 Difference]: Finished difference Result 21535 states and 31577 transitions. [2023-12-20 13:48:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:48:05,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-20 13:48:05,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:05,387 INFO L225 Difference]: With dead ends: 21535 [2023-12-20 13:48:05,387 INFO L226 Difference]: Without dead ends: 8221 [2023-12-20 13:48:05,398 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 [2023-12-20 13:48:05,399 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:05,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:48:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2023-12-20 13:48:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 8219. [2023-12-20 13:48:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8219 states, 8217 states have (on average 1.5011561397103566) internal successors, (12335), 8218 states have internal predecessors, (12335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 12335 transitions. [2023-12-20 13:48:05,542 INFO L78 Accepts]: Start accepts. Automaton has 8219 states and 12335 transitions. Word has length 76 [2023-12-20 13:48:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:05,543 INFO L495 AbstractCegarLoop]: Abstraction has 8219 states and 12335 transitions. [2023-12-20 13:48:05,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 8219 states and 12335 transitions. [2023-12-20 13:48:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 13:48:05,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:05,545 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:48:05,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 13:48:05,545 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:05,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1152666791, now seen corresponding path program 1 times [2023-12-20 13:48:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:05,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776448638] [2023-12-20 13:48:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:05,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:05,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:05,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776448638] [2023-12-20 13:48:05,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776448638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:05,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:05,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:48:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092820459] [2023-12-20 13:48:05,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:05,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:48:05,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:48:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:48:05,619 INFO L87 Difference]: Start difference. First operand 8219 states and 12335 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:05,689 INFO L93 Difference]: Finished difference Result 11551 states and 17069 transitions. [2023-12-20 13:48:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:48:05,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 13:48:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:05,696 INFO L225 Difference]: With dead ends: 11551 [2023-12-20 13:48:05,696 INFO L226 Difference]: Without dead ends: 4893 [2023-12-20 13:48:05,701 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 [2023-12-20 13:48:05,701 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:05,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:48:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2023-12-20 13:48:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4891. [2023-12-20 13:48:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4891 states, 4889 states have (on average 1.5444876252812436) internal successors, (7551), 4890 states have internal predecessors, (7551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 7551 transitions. [2023-12-20 13:48:05,824 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 7551 transitions. Word has length 78 [2023-12-20 13:48:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:05,824 INFO L495 AbstractCegarLoop]: Abstraction has 4891 states and 7551 transitions. [2023-12-20 13:48:05,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 7551 transitions. [2023-12-20 13:48:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 13:48:05,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:05,825 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:48:05,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 13:48:05,825 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:05,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash -917480818, now seen corresponding path program 1 times [2023-12-20 13:48:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189604682] [2023-12-20 13:48:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:05,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:05,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189604682] [2023-12-20 13:48:05,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189604682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:05,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:48:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104370328] [2023-12-20 13:48:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:05,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:48:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:48:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:48:05,906 INFO L87 Difference]: Start difference. First operand 4891 states and 7551 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:08,686 INFO L93 Difference]: Finished difference Result 7897 states and 13174 transitions. [2023-12-20 13:48:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:48:08,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-20 13:48:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:08,697 INFO L225 Difference]: With dead ends: 7897 [2023-12-20 13:48:08,698 INFO L226 Difference]: Without dead ends: 6393 [2023-12-20 13:48:08,701 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 [2023-12-20 13:48:08,702 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 830 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:08,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 595 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 13:48:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2023-12-20 13:48:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 6393. [2023-12-20 13:48:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6393 states, 6391 states have (on average 1.4850571115631357) internal successors, (9491), 6392 states have internal predecessors, (9491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6393 states to 6393 states and 9491 transitions. [2023-12-20 13:48:08,820 INFO L78 Accepts]: Start accepts. Automaton has 6393 states and 9491 transitions. Word has length 79 [2023-12-20 13:48:08,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:08,820 INFO L495 AbstractCegarLoop]: Abstraction has 6393 states and 9491 transitions. [2023-12-20 13:48:08,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 6393 states and 9491 transitions. [2023-12-20 13:48:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 13:48:08,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:08,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:08,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 13:48:08,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:08,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash 592619477, now seen corresponding path program 1 times [2023-12-20 13:48:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:08,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604044508] [2023-12-20 13:48:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:08,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:08,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604044508] [2023-12-20 13:48:08,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604044508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:08,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:08,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:48:08,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281761365] [2023-12-20 13:48:08,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:08,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:48:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:48:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:48:08,887 INFO L87 Difference]: Start difference. First operand 6393 states and 9491 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:08,936 INFO L93 Difference]: Finished difference Result 8061 states and 11833 transitions. [2023-12-20 13:48:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:48:08,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-20 13:48:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:08,943 INFO L225 Difference]: With dead ends: 8061 [2023-12-20 13:48:08,943 INFO L226 Difference]: Without dead ends: 4731 [2023-12-20 13:48:08,947 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 [2023-12-20 13:48:08,948 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:08,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:48:08,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2023-12-20 13:48:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4729. [2023-12-20 13:48:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 4727 states have (on average 1.5072984979902686) internal successors, (7125), 4728 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 7125 transitions. [2023-12-20 13:48:09,025 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 7125 transitions. Word has length 80 [2023-12-20 13:48:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:09,025 INFO L495 AbstractCegarLoop]: Abstraction has 4729 states and 7125 transitions. [2023-12-20 13:48:09,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 7125 transitions. [2023-12-20 13:48:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 13:48:09,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:09,026 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:09,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 13:48:09,027 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:09,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash -42900567, now seen corresponding path program 1 times [2023-12-20 13:48:09,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:09,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478239364] [2023-12-20 13:48:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478239364] [2023-12-20 13:48:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478239364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:09,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:48:09,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677235074] [2023-12-20 13:48:09,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:09,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:48:09,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:09,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:48:09,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:48:09,099 INFO L87 Difference]: Start difference. First operand 4729 states and 7125 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:11,326 INFO L93 Difference]: Finished difference Result 10739 states and 16628 transitions. [2023-12-20 13:48:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:48:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-20 13:48:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:11,337 INFO L225 Difference]: With dead ends: 10739 [2023-12-20 13:48:11,337 INFO L226 Difference]: Without dead ends: 7733 [2023-12-20 13:48:11,340 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 [2023-12-20 13:48:11,340 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 878 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:11,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 550 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 13:48:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7733 states. [2023-12-20 13:48:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7733 to 6982. [2023-12-20 13:48:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6982 states, 6980 states have (on average 1.4270773638968481) internal successors, (9961), 6981 states have internal predecessors, (9961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 9961 transitions. [2023-12-20 13:48:11,428 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 9961 transitions. Word has length 81 [2023-12-20 13:48:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:11,428 INFO L495 AbstractCegarLoop]: Abstraction has 6982 states and 9961 transitions. [2023-12-20 13:48:11,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 9961 transitions. [2023-12-20 13:48:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 13:48:11,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:11,429 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:48:11,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 13:48:11,429 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:11,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:11,430 INFO L85 PathProgramCache]: Analyzing trace with hash -495332221, now seen corresponding path program 1 times [2023-12-20 13:48:11,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:11,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552257445] [2023-12-20 13:48:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:11,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:11,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:11,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552257445] [2023-12-20 13:48:11,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552257445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:11,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:11,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:48:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27419900] [2023-12-20 13:48:11,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:11,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:48:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:48:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:48:11,492 INFO L87 Difference]: Start difference. First operand 6982 states and 9961 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:11,530 INFO L93 Difference]: Finished difference Result 7818 states and 11120 transitions. [2023-12-20 13:48:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:48:11,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-12-20 13:48:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:11,536 INFO L225 Difference]: With dead ends: 7818 [2023-12-20 13:48:11,537 INFO L226 Difference]: Without dead ends: 6152 [2023-12-20 13:48:11,540 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 [2023-12-20 13:48:11,540 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:11,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:48:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6152 states. [2023-12-20 13:48:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6152 to 6150. [2023-12-20 13:48:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6150 states, 6148 states have (on average 1.4298959011060508) internal successors, (8791), 6149 states have internal predecessors, (8791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6150 states to 6150 states and 8791 transitions. [2023-12-20 13:48:11,603 INFO L78 Accepts]: Start accepts. Automaton has 6150 states and 8791 transitions. Word has length 82 [2023-12-20 13:48:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:11,604 INFO L495 AbstractCegarLoop]: Abstraction has 6150 states and 8791 transitions. [2023-12-20 13:48:11,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6150 states and 8791 transitions. [2023-12-20 13:48:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:48:11,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:11,605 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:48:11,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 13:48:11,607 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:11,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash -813475644, now seen corresponding path program 1 times [2023-12-20 13:48:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544644824] [2023-12-20 13:48:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:11,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544644824] [2023-12-20 13:48:11,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544644824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:48:11,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:48:11,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:48:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132651801] [2023-12-20 13:48:11,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:48:11,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:48:11,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:48:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:48:11,655 INFO L87 Difference]: Start difference. First operand 6150 states and 8791 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:14,093 INFO L93 Difference]: Finished difference Result 16668 states and 23967 transitions. [2023-12-20 13:48:14,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:48:14,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-20 13:48:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:14,105 INFO L225 Difference]: With dead ends: 16668 [2023-12-20 13:48:14,105 INFO L226 Difference]: Without dead ends: 11409 [2023-12-20 13:48:14,110 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 [2023-12-20 13:48:14,110 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 1018 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:14,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 453 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 13:48:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11409 states. [2023-12-20 13:48:14,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11409 to 11407. [2023-12-20 13:48:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11407 states, 11405 states have (on average 1.3176676896098203) internal successors, (15028), 11406 states have internal predecessors, (15028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11407 states to 11407 states and 15028 transitions. [2023-12-20 13:48:14,266 INFO L78 Accepts]: Start accepts. Automaton has 11407 states and 15028 transitions. Word has length 83 [2023-12-20 13:48:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:14,266 INFO L495 AbstractCegarLoop]: Abstraction has 11407 states and 15028 transitions. [2023-12-20 13:48:14,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 11407 states and 15028 transitions. [2023-12-20 13:48:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-20 13:48:14,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:14,267 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] [2023-12-20 13:48:14,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 13:48:14,267 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:14,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash -323964239, now seen corresponding path program 1 times [2023-12-20 13:48:14,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:14,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586857266] [2023-12-20 13:48:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:14,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:14,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:14,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586857266] [2023-12-20 13:48:14,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586857266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:48:14,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763224230] [2023-12-20 13:48:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:14,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:48:14,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:48:14,852 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) [2023-12-20 13:48:14,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 13:48:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:14,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 13:48:14,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:48:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:48:15,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:48:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:48:15,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763224230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:48:15,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:48:15,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 13:48:15,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170330934] [2023-12-20 13:48:15,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:48:15,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 13:48:15,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 13:48:15,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 13:48:15,309 INFO L87 Difference]: Start difference. First operand 11407 states and 15028 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:17,169 INFO L93 Difference]: Finished difference Result 17870 states and 23700 transitions. [2023-12-20 13:48:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 13:48:17,169 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-20 13:48:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:17,183 INFO L225 Difference]: With dead ends: 17870 [2023-12-20 13:48:17,183 INFO L226 Difference]: Without dead ends: 17036 [2023-12-20 13:48:17,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 13:48:17,187 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 15445 mSDsluCounter, 6353 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15445 SdHoareTripleChecker+Valid, 7867 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:17,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15445 Valid, 7867 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:48:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17036 states. [2023-12-20 13:48:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17036 to 16740. [2023-12-20 13:48:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16740 states, 16738 states have (on average 1.307623371967977) internal successors, (21887), 16739 states have internal predecessors, (21887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16740 states to 16740 states and 21887 transitions. [2023-12-20 13:48:17,433 INFO L78 Accepts]: Start accepts. Automaton has 16740 states and 21887 transitions. Word has length 84 [2023-12-20 13:48:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:17,433 INFO L495 AbstractCegarLoop]: Abstraction has 16740 states and 21887 transitions. [2023-12-20 13:48:17,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 16740 states and 21887 transitions. [2023-12-20 13:48:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 13:48:17,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:17,434 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:48:17,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 13:48:17,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 13:48:17,640 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:17,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:17,640 INFO L85 PathProgramCache]: Analyzing trace with hash -152858016, now seen corresponding path program 1 times [2023-12-20 13:48:17,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:17,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417276283] [2023-12-20 13:48:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:17,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417276283] [2023-12-20 13:48:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417276283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:48:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756827510] [2023-12-20 13:48:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:48:17,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:48:17,953 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) [2023-12-20 13:48:17,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 13:48:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:18,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 13:48:18,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:48:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:18,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:48:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756827510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:48:18,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:48:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-20 13:48:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634222788] [2023-12-20 13:48:18,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:48:18,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 13:48:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:18,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 13:48:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-20 13:48:18,945 INFO L87 Difference]: Start difference. First operand 16740 states and 21887 transitions. Second operand has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:21,132 INFO L93 Difference]: Finished difference Result 40118 states and 52117 transitions. [2023-12-20 13:48:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 13:48:21,132 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 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 85 [2023-12-20 13:48:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:21,166 INFO L225 Difference]: With dead ends: 40118 [2023-12-20 13:48:21,166 INFO L226 Difference]: Without dead ends: 33993 [2023-12-20 13:48:21,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=670, Invalid=2410, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 13:48:21,179 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 22253 mSDsluCounter, 5214 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22253 SdHoareTripleChecker+Valid, 6749 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:21,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22253 Valid, 6749 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:48:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33993 states. [2023-12-20 13:48:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33993 to 32911. [2023-12-20 13:48:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32911 states, 32909 states have (on average 1.286152724178796) internal successors, (42326), 32910 states have internal predecessors, (42326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32911 states to 32911 states and 42326 transitions. [2023-12-20 13:48:21,971 INFO L78 Accepts]: Start accepts. Automaton has 32911 states and 42326 transitions. Word has length 85 [2023-12-20 13:48:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:21,971 INFO L495 AbstractCegarLoop]: Abstraction has 32911 states and 42326 transitions. [2023-12-20 13:48:21,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 32911 states and 42326 transitions. [2023-12-20 13:48:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 13:48:21,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:21,973 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:48:21,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 13:48:22,177 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,SelfDestructingSolverStorable25 [2023-12-20 13:48:22,178 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:22,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:22,178 INFO L85 PathProgramCache]: Analyzing trace with hash -326486610, now seen corresponding path program 1 times [2023-12-20 13:48:22,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:22,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737813412] [2023-12-20 13:48:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:22,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:22,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737813412] [2023-12-20 13:48:22,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737813412] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:48:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845950828] [2023-12-20 13:48:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:48:22,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:48:22,497 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) [2023-12-20 13:48:22,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 13:48:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:22,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 13:48:22,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:48:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:23,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:48:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845950828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:48:24,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:48:24,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-20 13:48:24,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136798409] [2023-12-20 13:48:24,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:48:24,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 13:48:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:24,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 13:48:24,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-20 13:48:24,248 INFO L87 Difference]: Start difference. First operand 32911 states and 42326 transitions. Second operand has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:27,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:27,965 INFO L93 Difference]: Finished difference Result 71755 states and 91367 transitions. [2023-12-20 13:48:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-20 13:48:27,966 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 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 85 [2023-12-20 13:48:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:28,023 INFO L225 Difference]: With dead ends: 71755 [2023-12-20 13:48:28,024 INFO L226 Difference]: Without dead ends: 52507 [2023-12-20 13:48:28,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1140, Invalid=4262, Unknown=0, NotChecked=0, Total=5402 [2023-12-20 13:48:28,034 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 20810 mSDsluCounter, 16793 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20810 SdHoareTripleChecker+Valid, 18312 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:28,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20810 Valid, 18312 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:48:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52507 states. [2023-12-20 13:48:29,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52507 to 51385. [2023-12-20 13:48:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51385 states, 51383 states have (on average 1.2645427476013467) internal successors, (64976), 51384 states have internal predecessors, (64976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51385 states to 51385 states and 64976 transitions. [2023-12-20 13:48:29,565 INFO L78 Accepts]: Start accepts. Automaton has 51385 states and 64976 transitions. Word has length 85 [2023-12-20 13:48:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:29,565 INFO L495 AbstractCegarLoop]: Abstraction has 51385 states and 64976 transitions. [2023-12-20 13:48:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:29,565 INFO L276 IsEmpty]: Start isEmpty. Operand 51385 states and 64976 transitions. [2023-12-20 13:48:29,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 13:48:29,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:29,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:29,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 13:48:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:48:29,772 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:29,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash 8311151, now seen corresponding path program 1 times [2023-12-20 13:48:29,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:29,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649716418] [2023-12-20 13:48:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:30,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:30,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649716418] [2023-12-20 13:48:30,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649716418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:48:30,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361481015] [2023-12-20 13:48:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:30,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:48:30,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:48:30,017 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) [2023-12-20 13:48:30,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 13:48:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:30,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 13:48:30,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:48:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:32,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:48:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:34,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361481015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:48:34,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:48:34,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 43 [2023-12-20 13:48:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938026114] [2023-12-20 13:48:34,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:48:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-20 13:48:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-20 13:48:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 13:48:34,231 INFO L87 Difference]: Start difference. First operand 51385 states and 64976 transitions. Second operand has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:54,929 INFO L93 Difference]: Finished difference Result 156511 states and 196962 transitions. [2023-12-20 13:48:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-20 13:48:54,929 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 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 86 [2023-12-20 13:48:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:55,054 INFO L225 Difference]: With dead ends: 156511 [2023-12-20 13:48:55,054 INFO L226 Difference]: Without dead ends: 119651 [2023-12-20 13:48:55,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11640 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=5588, Invalid=28084, Unknown=0, NotChecked=0, Total=33672 [2023-12-20 13:48:55,079 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 22153 mSDsluCounter, 13661 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22153 SdHoareTripleChecker+Valid, 15213 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:55,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22153 Valid, 15213 Invalid, 2733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 13:48:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119651 states. [2023-12-20 13:48:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119651 to 109691. [2023-12-20 13:48:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109691 states, 109689 states have (on average 1.248830785220031) internal successors, (136983), 109690 states have internal predecessors, (136983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109691 states to 109691 states and 136983 transitions. [2023-12-20 13:48:59,443 INFO L78 Accepts]: Start accepts. Automaton has 109691 states and 136983 transitions. Word has length 86 [2023-12-20 13:48:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:59,443 INFO L495 AbstractCegarLoop]: Abstraction has 109691 states and 136983 transitions. [2023-12-20 13:48:59,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 109691 states and 136983 transitions. [2023-12-20 13:48:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 13:48:59,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:59,446 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:48:59,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 13:48:59,650 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,SelfDestructingSolverStorable27 [2023-12-20 13:48:59,651 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:59,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:59,651 INFO L85 PathProgramCache]: Analyzing trace with hash -12119242, now seen corresponding path program 1 times [2023-12-20 13:48:59,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:59,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295416036] [2023-12-20 13:48:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:59,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:59,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:59,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295416036] [2023-12-20 13:48:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295416036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:48:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061381459] [2023-12-20 13:48:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:59,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:48:59,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:48:59,891 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) [2023-12-20 13:48:59,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 13:48:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:59,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 13:48:59,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:49:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:49:00,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:49:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:49:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061381459] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:49:01,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:49:01,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2023-12-20 13:49:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715094762] [2023-12-20 13:49:01,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:49:01,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 13:49:01,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:49:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 13:49:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2023-12-20 13:49:01,579 INFO L87 Difference]: Start difference. First operand 109691 states and 136983 transitions. Second operand has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:49:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:49:14,497 INFO L93 Difference]: Finished difference Result 319861 states and 399582 transitions. [2023-12-20 13:49:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-20 13:49:14,498 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 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 87 [2023-12-20 13:49:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:49:15,018 INFO L225 Difference]: With dead ends: 319861 [2023-12-20 13:49:15,018 INFO L226 Difference]: Without dead ends: 227911 [2023-12-20 13:49:15,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6873 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3015, Invalid=16725, Unknown=0, NotChecked=0, Total=19740 [2023-12-20 13:49:15,091 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 23527 mSDsluCounter, 11454 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23527 SdHoareTripleChecker+Valid, 13001 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:49:15,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23527 Valid, 13001 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 13:49:15,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227911 states. [2023-12-20 13:49:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227911 to 94659. [2023-12-20 13:49:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94659 states, 94657 states have (on average 1.2374890393737388) internal successors, (117137), 94658 states have internal predecessors, (117137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:49:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94659 states to 94659 states and 117137 transitions. [2023-12-20 13:49:20,238 INFO L78 Accepts]: Start accepts. Automaton has 94659 states and 117137 transitions. Word has length 87 [2023-12-20 13:49:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:49:20,238 INFO L495 AbstractCegarLoop]: Abstraction has 94659 states and 117137 transitions. [2023-12-20 13:49:20,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:49:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 94659 states and 117137 transitions. [2023-12-20 13:49:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 13:49:20,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:49:20,240 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:49:20,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 13:49:20,441 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,SelfDestructingSolverStorable28 [2023-12-20 13:49:20,442 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:49:20,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:49:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash 678905639, now seen corresponding path program 1 times [2023-12-20 13:49:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:49:20,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500996052] [2023-12-20 13:49:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:49:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:49:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:49:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:49:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:49:23,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500996052] [2023-12-20 13:49:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500996052] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:49:23,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179581759] [2023-12-20 13:49:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:49:23,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:49:23,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:49:23,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:49:23,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 13:49:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:49:23,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 13:49:23,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:49:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:49:24,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:49:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:49:25,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179581759] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:49:25,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:49:25,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 16] total 59 [2023-12-20 13:49:25,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263029501] [2023-12-20 13:49:25,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:49:25,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-20 13:49:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:49:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-20 13:49:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3200, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 13:49:25,630 INFO L87 Difference]: Start difference. First operand 94659 states and 117137 transitions. Second operand has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:31,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:50:31,761 INFO L93 Difference]: Finished difference Result 205433 states and 253197 transitions. [2023-12-20 13:50:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2023-12-20 13:50:31,761 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 13:50:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:50:31,938 INFO L225 Difference]: With dead ends: 205433 [2023-12-20 13:50:31,947 INFO L226 Difference]: Without dead ends: 172698 [2023-12-20 13:50:31,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54088 ImplicationChecksByTransitivity, 53.5s TimeCoverageRelationStatistics Valid=20013, Invalid=117257, Unknown=0, NotChecked=0, Total=137270 [2023-12-20 13:50:31,978 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 28360 mSDsluCounter, 40324 mSDsCounter, 0 mSdLazyCounter, 10084 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28360 SdHoareTripleChecker+Valid, 41990 SdHoareTripleChecker+Invalid, 10339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 10084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:50:31,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28360 Valid, 41990 Invalid, 10339 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [255 Valid, 10084 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-20 13:50:32,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172698 states. [2023-12-20 13:50:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172698 to 83726. [2023-12-20 13:50:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83726 states, 83724 states have (on average 1.2384979217428693) internal successors, (103692), 83725 states have internal predecessors, (103692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83726 states to 83726 states and 103692 transitions. [2023-12-20 13:50:37,102 INFO L78 Accepts]: Start accepts. Automaton has 83726 states and 103692 transitions. Word has length 88 [2023-12-20 13:50:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:50:37,102 INFO L495 AbstractCegarLoop]: Abstraction has 83726 states and 103692 transitions. [2023-12-20 13:50:37,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 83726 states and 103692 transitions. [2023-12-20 13:50:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 13:50:37,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:50:37,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:50:37,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 13:50:37,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:50:37,309 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:50:37,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:50:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1440817043, now seen corresponding path program 1 times [2023-12-20 13:50:37,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:50:37,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103808693] [2023-12-20 13:50:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:50:37,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:50:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:50:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:50:39,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:50:39,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103808693] [2023-12-20 13:50:39,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103808693] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:50:39,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805303225] [2023-12-20 13:50:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:50:39,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:50:39,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:50:39,136 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:50:39,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 13:50:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:50:39,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-20 13:50:39,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:50:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:50:42,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:50:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:50:46,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805303225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:50:46,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:50:46,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 23] total 69 [2023-12-20 13:50:46,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647551896] [2023-12-20 13:50:46,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:50:46,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-20 13:50:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:50:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-20 13:50:46,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=4209, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 13:50:46,064 INFO L87 Difference]: Start difference. First operand 83726 states and 103692 transitions. Second operand has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:52:32,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:52:32,816 INFO L93 Difference]: Finished difference Result 210059 states and 258191 transitions. [2023-12-20 13:52:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2023-12-20 13:52:32,817 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-20 13:52:32,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:52:32,994 INFO L225 Difference]: With dead ends: 210059 [2023-12-20 13:52:32,994 INFO L226 Difference]: Without dead ends: 179648 [2023-12-20 13:52:33,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80325 ImplicationChecksByTransitivity, 91.5s TimeCoverageRelationStatistics Valid=30795, Invalid=160611, Unknown=0, NotChecked=0, Total=191406 [2023-12-20 13:52:33,027 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 26970 mSDsluCounter, 42627 mSDsCounter, 0 mSdLazyCounter, 12012 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26970 SdHoareTripleChecker+Valid, 44311 SdHoareTripleChecker+Invalid, 12359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 12012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:52:33,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26970 Valid, 44311 Invalid, 12359 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [347 Valid, 12012 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-20 13:52:33,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179648 states. [2023-12-20 13:52:40,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179648 to 102056. [2023-12-20 13:52:40,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102056 states, 102054 states have (on average 1.2407352969996277) internal successors, (126622), 102055 states have internal predecessors, (126622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:52:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102056 states to 102056 states and 126622 transitions. [2023-12-20 13:52:40,553 INFO L78 Accepts]: Start accepts. Automaton has 102056 states and 126622 transitions. Word has length 90 [2023-12-20 13:52:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:52:40,553 INFO L495 AbstractCegarLoop]: Abstraction has 102056 states and 126622 transitions. [2023-12-20 13:52:40,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:52:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 102056 states and 126622 transitions. [2023-12-20 13:52:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:52:40,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:52:40,562 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:52:40,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 13:52:40,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:52:40,767 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:52:40,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:52:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -242955006, now seen corresponding path program 1 times [2023-12-20 13:52:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:52:40,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715745091] [2023-12-20 13:52:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:52:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:52:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:52:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:52:41,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:52:41,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715745091] [2023-12-20 13:52:41,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715745091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:52:41,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180257213] [2023-12-20 13:52:41,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:52:41,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:52:41,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:52:41,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:52:41,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 13:52:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:52:41,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:52:41,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:52:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 38 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:52:42,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:52:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 36 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:52:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180257213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:52:43,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:52:43,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 13:52:43,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006102398] [2023-12-20 13:52:43,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:52:43,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 13:52:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:52:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 13:52:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-12-20 13:52:43,741 INFO L87 Difference]: Start difference. First operand 102056 states and 126622 transitions. Second operand has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:52:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:52:55,440 INFO L93 Difference]: Finished difference Result 178437 states and 221923 transitions. [2023-12-20 13:52:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-20 13:52:55,441 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 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 138 [2023-12-20 13:52:55,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:52:55,578 INFO L225 Difference]: With dead ends: 178437 [2023-12-20 13:52:55,579 INFO L226 Difference]: Without dead ends: 119693 [2023-12-20 13:52:55,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1754, Invalid=7176, Unknown=0, NotChecked=0, Total=8930 [2023-12-20 13:52:55,617 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 21949 mSDsluCounter, 14371 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21949 SdHoareTripleChecker+Valid, 15896 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:52:55,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21949 Valid, 15896 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 13:52:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119693 states. [2023-12-20 13:53:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119693 to 79002. [2023-12-20 13:53:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79002 states, 79000 states have (on average 1.2330253164556961) internal successors, (97409), 79001 states have internal predecessors, (97409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:53:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79002 states to 79002 states and 97409 transitions. [2023-12-20 13:53:01,649 INFO L78 Accepts]: Start accepts. Automaton has 79002 states and 97409 transitions. Word has length 138 [2023-12-20 13:53:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:53:01,650 INFO L495 AbstractCegarLoop]: Abstraction has 79002 states and 97409 transitions. [2023-12-20 13:53:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:53:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 79002 states and 97409 transitions. [2023-12-20 13:53:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:53:01,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:53:01,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:53:01,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 13:53:01,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 13:53:01,877 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:53:01,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:53:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1654007984, now seen corresponding path program 1 times [2023-12-20 13:53:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:53:01,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462908411] [2023-12-20 13:53:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:53:01,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:53:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:53:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:02,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:53:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462908411] [2023-12-20 13:53:02,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462908411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:53:02,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765619782] [2023-12-20 13:53:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:53:02,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:53:02,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:53:02,460 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:53:02,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 13:53:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:53:02,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:53:02,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:53:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:03,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:53:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:05,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765619782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:53:05,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:53:05,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:53:05,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669816989] [2023-12-20 13:53:05,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:53:05,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:53:05,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:53:05,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:53:05,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:53:05,130 INFO L87 Difference]: Start difference. First operand 79002 states and 97409 transitions. Second operand has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 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) [2023-12-20 13:53:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:53:11,254 INFO L93 Difference]: Finished difference Result 103743 states and 127987 transitions. [2023-12-20 13:53:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 13:53:11,254 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 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 138 [2023-12-20 13:53:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:53:11,329 INFO L225 Difference]: With dead ends: 103743 [2023-12-20 13:53:11,330 INFO L226 Difference]: Without dead ends: 80110 [2023-12-20 13:53:11,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 13:53:11,343 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 12179 mSDsluCounter, 7795 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12179 SdHoareTripleChecker+Valid, 9331 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:53:11,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12179 Valid, 9331 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:53:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80110 states. [2023-12-20 13:53:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80110 to 66496. [2023-12-20 13:53:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66496 states, 66494 states have (on average 1.2311035582157788) internal successors, (81861), 66495 states have internal predecessors, (81861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:53:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66496 states to 66496 states and 81861 transitions. [2023-12-20 13:53:16,567 INFO L78 Accepts]: Start accepts. Automaton has 66496 states and 81861 transitions. Word has length 138 [2023-12-20 13:53:16,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:53:16,567 INFO L495 AbstractCegarLoop]: Abstraction has 66496 states and 81861 transitions. [2023-12-20 13:53:16,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 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) [2023-12-20 13:53:16,567 INFO L276 IsEmpty]: Start isEmpty. Operand 66496 states and 81861 transitions. [2023-12-20 13:53:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 13:53:16,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:53:16,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:53:16,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 13:53:16,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:53:16,778 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:53:16,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:53:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1151252781, now seen corresponding path program 1 times [2023-12-20 13:53:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:53:16,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757704729] [2023-12-20 13:53:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:53:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:53:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:53:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 48 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:17,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:53:17,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757704729] [2023-12-20 13:53:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757704729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:53:17,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142614326] [2023-12-20 13:53:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:53:17,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:53:17,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:53:17,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:53:17,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 13:53:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:53:17,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:53:17,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:53:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:18,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:53:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:20,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142614326] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:53:20,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:53:20,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 13:53:20,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177572320] [2023-12-20 13:53:20,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:53:20,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 13:53:20,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:53:20,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 13:53:20,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 13:53:20,202 INFO L87 Difference]: Start difference. First operand 66496 states and 81861 transitions. Second operand has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:53:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:53:37,336 INFO L93 Difference]: Finished difference Result 151862 states and 185536 transitions. [2023-12-20 13:53:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-20 13:53:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 states have internal predecessors, (370), 0 states have call successors, (0), 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 139 [2023-12-20 13:53:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:53:37,593 INFO L225 Difference]: With dead ends: 151862 [2023-12-20 13:53:37,593 INFO L226 Difference]: Without dead ends: 108750 [2023-12-20 13:53:37,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9363 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4309, Invalid=24421, Unknown=0, NotChecked=0, Total=28730 [2023-12-20 13:53:37,616 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 25029 mSDsluCounter, 15084 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25029 SdHoareTripleChecker+Valid, 16660 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:53:37,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25029 Valid, 16660 Invalid, 2636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 13:53:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108750 states. [2023-12-20 13:53:45,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108750 to 91584. [2023-12-20 13:53:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91584 states, 91582 states have (on average 1.2153698324998363) internal successors, (111306), 91583 states have internal predecessors, (111306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:53:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91584 states to 91584 states and 111306 transitions. [2023-12-20 13:53:46,036 INFO L78 Accepts]: Start accepts. Automaton has 91584 states and 111306 transitions. Word has length 139 [2023-12-20 13:53:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:53:46,036 INFO L495 AbstractCegarLoop]: Abstraction has 91584 states and 111306 transitions. [2023-12-20 13:53:46,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:53:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 91584 states and 111306 transitions. [2023-12-20 13:53:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 13:53:46,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:53:46,043 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:53:46,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 13:53:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 13:53:46,248 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:53:46,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:53:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash 592390141, now seen corresponding path program 1 times [2023-12-20 13:53:46,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:53:46,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427813742] [2023-12-20 13:53:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:53:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:53:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:53:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:47,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:53:47,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427813742] [2023-12-20 13:53:47,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427813742] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:53:47,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311349115] [2023-12-20 13:53:47,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:53:47,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:53:47,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:53:47,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:53:47,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 13:53:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:53:47,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 13:53:47,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:53:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:49,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:53:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:51,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311349115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:53:51,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:53:51,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 53 [2023-12-20 13:53:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362883826] [2023-12-20 13:53:51,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:53:51,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 13:53:51,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:53:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 13:53:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 13:53:51,745 INFO L87 Difference]: Start difference. First operand 91584 states and 111306 transitions. Second operand has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:54:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:54:10,962 INFO L93 Difference]: Finished difference Result 150963 states and 182687 transitions. [2023-12-20 13:54:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-20 13:54:10,963 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 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 141 [2023-12-20 13:54:10,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:54:11,113 INFO L225 Difference]: With dead ends: 150963 [2023-12-20 13:54:11,114 INFO L226 Difference]: Without dead ends: 130621 [2023-12-20 13:54:11,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2646, Invalid=13356, Unknown=0, NotChecked=0, Total=16002 [2023-12-20 13:54:11,140 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 15916 mSDsluCounter, 28526 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15916 SdHoareTripleChecker+Valid, 30124 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:54:11,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15916 Valid, 30124 Invalid, 2565 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 13:54:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130621 states. [2023-12-20 13:54:21,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130621 to 107239. [2023-12-20 13:54:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107239 states, 107237 states have (on average 1.2090416553987895) internal successors, (129654), 107238 states have internal predecessors, (129654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:54:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107239 states to 107239 states and 129654 transitions. [2023-12-20 13:54:22,043 INFO L78 Accepts]: Start accepts. Automaton has 107239 states and 129654 transitions. Word has length 141 [2023-12-20 13:54:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:54:22,043 INFO L495 AbstractCegarLoop]: Abstraction has 107239 states and 129654 transitions. [2023-12-20 13:54:22,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:54:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 107239 states and 129654 transitions. [2023-12-20 13:54:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 13:54:22,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:54:22,050 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:54:22,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 13:54:22,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 13:54:22,256 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:54:22,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:54:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash 120159649, now seen corresponding path program 1 times [2023-12-20 13:54:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:54:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329339505] [2023-12-20 13:54:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:54:22,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:54:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:54:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:54:24,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:54:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329339505] [2023-12-20 13:54:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329339505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:54:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90439469] [2023-12-20 13:54:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:54:24,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:54:24,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:54:24,688 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:54:24,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 13:54:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:54:24,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 13:54:24,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:54:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:54:26,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:54:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:54:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90439469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:54:28,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:54:28,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 19, 19] total 70 [2023-12-20 13:54:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788951382] [2023-12-20 13:54:28,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:54:28,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-20 13:54:28,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:54:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-20 13:54:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=4506, Unknown=0, NotChecked=0, Total=4830 [2023-12-20 13:54:28,848 INFO L87 Difference]: Start difference. First operand 107239 states and 129654 transitions. Second operand has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:56:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:56:13,483 INFO L93 Difference]: Finished difference Result 256518 states and 308406 transitions. [2023-12-20 13:56:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 349 states. [2023-12-20 13:56:13,484 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 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 141 [2023-12-20 13:56:13,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:56:13,780 INFO L225 Difference]: With dead ends: 256518 [2023-12-20 13:56:13,780 INFO L226 Difference]: Without dead ends: 223385 [2023-12-20 13:56:13,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62787 ImplicationChecksByTransitivity, 75.4s TimeCoverageRelationStatistics Valid=15669, Invalid=157803, Unknown=0, NotChecked=0, Total=173472 [2023-12-20 13:56:13,832 INFO L413 NwaCegarLoop]: 1768 mSDtfsCounter, 35293 mSDsluCounter, 57156 mSDsCounter, 0 mSdLazyCounter, 13036 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35293 SdHoareTripleChecker+Valid, 58924 SdHoareTripleChecker+Invalid, 13384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 13036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-20 13:56:13,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35293 Valid, 58924 Invalid, 13384 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [348 Valid, 13036 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-20 13:56:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223385 states. [2023-12-20 13:56:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223385 to 177742. [2023-12-20 13:56:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177742 states, 177740 states have (on average 1.202492404635985) internal successors, (213731), 177741 states have internal predecessors, (213731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:56:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177742 states to 177742 states and 213731 transitions. [2023-12-20 13:56:35,131 INFO L78 Accepts]: Start accepts. Automaton has 177742 states and 213731 transitions. Word has length 141 [2023-12-20 13:56:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:56:35,131 INFO L495 AbstractCegarLoop]: Abstraction has 177742 states and 213731 transitions. [2023-12-20 13:56:35,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:56:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 177742 states and 213731 transitions. [2023-12-20 13:56:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 13:56:35,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:56:35,140 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:56:35,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 13:56:35,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 13:56:35,345 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:56:35,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:56:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash -372027067, now seen corresponding path program 1 times [2023-12-20 13:56:35,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:56:35,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660332562] [2023-12-20 13:56:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:56:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:56:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:56:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:56:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:56:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660332562] [2023-12-20 13:56:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660332562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:56:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881168952] [2023-12-20 13:56:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:56:35,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:56:35,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:56:35,998 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:56:36,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 13:56:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:56:36,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 13:56:36,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:56:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:56:37,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:56:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:56:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881168952] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:56:41,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:56:41,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 22] total 61 [2023-12-20 13:56:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906563828] [2023-12-20 13:56:41,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:56:41,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-20 13:56:41,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:56:41,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-20 13:56:41,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3357, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 13:56:41,355 INFO L87 Difference]: Start difference. First operand 177742 states and 213731 transitions. Second operand has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 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... [2023-12-20 14:01:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 807 states. [2023-12-20 14:01:44,927 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 14:01:44,928 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 [2023-12-20 14:01:44,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1103 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 861 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344507 ImplicationChecksByTransitivity, 239.4s TimeCoverageRelationStatistics Valid=55938, Invalid=687968, Unknown=0, NotChecked=0, Total=743906 [2023-12-20 14:01:44,965 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 22315 mSDsluCounter, 15859 mSDsCounter, 0 mSdLazyCounter, 9753 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22315 SdHoareTripleChecker+Valid, 16443 SdHoareTripleChecker+Invalid, 10516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 9753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:01:44,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22315 Valid, 16443 Invalid, 10516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [763 Valid, 9753 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-12-20 14:01:44,971 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 14:01:44,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 14:01:45,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-20 14:01:45,182 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (177742states) and FLOYD_HOARE automaton (currently 807 states, 61 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-5-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-20 14:01:45,188 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 14:01:45,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:01:45,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 14:01:45,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 02:01:45 BoogieIcfgContainer [2023-12-20 14:01:45,209 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 14:01:45,211 INFO L158 Benchmark]: Toolchain (without parser) took 835965.22ms. Allocated memory was 259.0MB in the beginning and 5.3GB in the end (delta: 5.0GB). Free memory was 190.6MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-20 14:01:45,211 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 14:01:45,212 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1224.93ms. Allocated memory is still 259.0MB. Free memory was 190.6MB in the beginning and 165.6MB in the end (delta: 25.0MB). Peak memory consumption was 92.4MB. Max. memory is 8.0GB. [2023-12-20 14:01:45,212 INFO L158 Benchmark]: Boogie Procedure Inliner took 252.01ms. Allocated memory is still 259.0MB. Free memory was 165.6MB in the beginning and 125.1MB in the end (delta: 40.5MB). Peak memory consumption was 46.8MB. Max. memory is 8.0GB. [2023-12-20 14:01:45,212 INFO L158 Benchmark]: Boogie Preprocessor took 581.97ms. Allocated memory was 259.0MB in the beginning and 382.7MB in the end (delta: 123.7MB). Free memory was 125.1MB in the beginning and 257.7MB in the end (delta: -132.6MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-12-20 14:01:45,212 INFO L158 Benchmark]: RCFGBuilder took 3069.12ms. Allocated memory was 382.7MB in the beginning and 765.5MB in the end (delta: 382.7MB). Free memory was 257.7MB in the beginning and 409.4MB in the end (delta: -151.6MB). Peak memory consumption was 234.9MB. Max. memory is 8.0GB. [2023-12-20 14:01:45,212 INFO L158 Benchmark]: TraceAbstraction took 830830.88ms. Allocated memory was 765.5MB in the beginning and 5.3GB in the end (delta: 4.5GB). Free memory was 408.3MB in the beginning and 2.7GB in the end (delta: -2.3GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-20 14:01:45,213 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1224.93ms. Allocated memory is still 259.0MB. Free memory was 190.6MB in the beginning and 165.6MB in the end (delta: 25.0MB). Peak memory consumption was 92.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 252.01ms. Allocated memory is still 259.0MB. Free memory was 165.6MB in the beginning and 125.1MB in the end (delta: 40.5MB). Peak memory consumption was 46.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 581.97ms. Allocated memory was 259.0MB in the beginning and 382.7MB in the end (delta: 123.7MB). Free memory was 125.1MB in the beginning and 257.7MB in the end (delta: -132.6MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * RCFGBuilder took 3069.12ms. Allocated memory was 382.7MB in the beginning and 765.5MB in the end (delta: 382.7MB). Free memory was 257.7MB in the beginning and 409.4MB in the end (delta: -151.6MB). Peak memory consumption was 234.9MB. Max. memory is 8.0GB. * TraceAbstraction took 830830.88ms. Allocated memory was 765.5MB in the beginning and 5.3GB in the end (delta: 4.5GB). Free memory was 408.3MB in the beginning and 2.7GB in the end (delta: -2.3GB). 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: 437]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 437). Cancelled while NwaCegarLoop was constructing difference of abstraction (177742states) and FLOYD_HOARE automaton (currently 807 states, 61 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-5-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 473]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 473). Cancelled while NwaCegarLoop was constructing difference of abstraction (177742states) and FLOYD_HOARE automaton (currently 807 states, 61 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-5-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 836 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 830.8s, OverallIterations: 37, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 693.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 352126 SdHoareTripleChecker+Valid, 53.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 352126 mSDsluCounter, 353628 SdHoareTripleChecker+Invalid, 46.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 300775 mSDsCounter, 5596 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68613 IncrementalHoareTripleChecker+Invalid, 74209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5596 mSolverCounterUnsat, 52853 mSDtfsCounter, 68613 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5713 GetRequests, 2605 SyntacticMatches, 4 SemanticMatches, 3103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579386 ImplicationChecksByTransitivity, 506.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177742occurred in iteration=36, InterpolantAutomatonStates: 1827, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 79.9s AutomataMinimizationTime, 36 MinimizatonAttempts, 492909 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 51.7s InterpolantComputationTime, 4402 NumberOfCodeBlocks, 4402 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 5782 ConstructedInterpolants, 0 QuantifiedInterpolants, 108989 SizeOfPredicates, 123 NumberOfNonLiveVariables, 6539 ConjunctsInSsa, 312 ConjunctsInUnsatCore, 63 InterpolantComputations, 24 PerfectInterpolantSequences, 876/2496 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