/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/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:29:31,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:29:31,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:29:31,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:29:31,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:29:31,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:29:31,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:29:31,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:29:31,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:29:31,560 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:29:31,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:29:31,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:29:31,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:29:31,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:29:31,562 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:29:31,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:29:31,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:29:31,563 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:29:31,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:29:31,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:29:31,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:29:31,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:29:31,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:29:31,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:29:31,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:29:31,565 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:29:31,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:29:31,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:29:31,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:29:31,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:29:31,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:29:31,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:29:31,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:29:31,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:29:31,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:29:31,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:29:31,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:29:31,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:29:31,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:29:31,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:29:31,569 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:29:31,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:29:31,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:29:31,570 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:29:31,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:29:31,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:29:31,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:29:31,796 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:29:31,796 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:29:31,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-12-16 06:29:32,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:29:33,038 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:29:33,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-12-16 06:29:33,059 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e376613d/70e27626a14145a093fc38a6c73e2a9a/FLAG35f5459ee [2023-12-16 06:29:33,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e376613d/70e27626a14145a093fc38a6c73e2a9a [2023-12-16 06:29:33,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:29:33,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:29:33,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:29:33,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:29:33,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:29:33,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b215f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33, skipping insertion in model container [2023-12-16 06:29:33,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,123 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:29:33,285 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6694,6707] [2023-12-16 06:29:33,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:29:33,320 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:29:33,361 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6694,6707] [2023-12-16 06:29:33,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:29:33,396 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:29:33,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33 WrapperNode [2023-12-16 06:29:33,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:29:33,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:29:33,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:29:33,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:29:33,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,436 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 535 [2023-12-16 06:29:33,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:29:33,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:29:33,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:29:33,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:29:33,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,475 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 06:29:33,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:29:33,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:29:33,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:29:33,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:29:33,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (1/1) ... [2023-12-16 06:29:33,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:29:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:29:33,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 06:29:33,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 06:29:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:29:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:29:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:29:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:29:33,642 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:29:33,643 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:29:34,099 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:29:34,132 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:29:34,132 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 06:29:34,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:29:34 BoogieIcfgContainer [2023-12-16 06:29:34,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:29:34,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:29:34,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:29:34,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:29:34,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:29:33" (1/3) ... [2023-12-16 06:29:34,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a327c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:29:34, skipping insertion in model container [2023-12-16 06:29:34,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:29:33" (2/3) ... [2023-12-16 06:29:34,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a327c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:29:34, skipping insertion in model container [2023-12-16 06:29:34,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:29:34" (3/3) ... [2023-12-16 06:29:34,141 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-12-16 06:29:34,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:29:34,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:29:34,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:29:34,203 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;@7d9c49a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:29:34,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:29:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.7589285714285714) internal successors, (197), 113 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 06:29:34,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:34,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:34,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:34,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1771872812, now seen corresponding path program 1 times [2023-12-16 06:29:34,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:34,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680878339] [2023-12-16 06:29:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:34,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:34,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680878339] [2023-12-16 06:29:34,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680878339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:34,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:34,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:29:34,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500022541] [2023-12-16 06:29:34,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:34,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:29:34,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:34,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:29:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:34,591 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.7589285714285714) internal successors, (197), 113 states have internal predecessors, (197), 0 states have call successors, (0), 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 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:34,633 INFO L93 Difference]: Finished difference Result 250 states and 412 transitions. [2023-12-16 06:29:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:29:34,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-16 06:29:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:34,649 INFO L225 Difference]: With dead ends: 250 [2023-12-16 06:29:34,649 INFO L226 Difference]: Without dead ends: 174 [2023-12-16 06:29:34,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:34,655 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 139 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 399 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 [2023-12-16 06:29:34,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 399 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-16 06:29:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2023-12-16 06:29:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.456140350877193) internal successors, (249), 171 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 249 transitions. [2023-12-16 06:29:34,692 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 249 transitions. Word has length 71 [2023-12-16 06:29:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:34,692 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 249 transitions. [2023-12-16 06:29:34,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 249 transitions. [2023-12-16 06:29:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 06:29:34,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:34,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:34,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:29:34,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:34,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:34,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1420191842, now seen corresponding path program 1 times [2023-12-16 06:29:34,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:34,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966053390] [2023-12-16 06:29:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:34,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:34,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:34,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966053390] [2023-12-16 06:29:34,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966053390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:34,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:34,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:29:34,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653811837] [2023-12-16 06:29:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:34,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:29:34,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:34,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:29:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:34,837 INFO L87 Difference]: Start difference. First operand 172 states and 249 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:34,869 INFO L93 Difference]: Finished difference Result 416 states and 637 transitions. [2023-12-16 06:29:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:29:34,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-12-16 06:29:34,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:34,875 INFO L225 Difference]: With dead ends: 416 [2023-12-16 06:29:34,875 INFO L226 Difference]: Without dead ends: 286 [2023-12-16 06:29:34,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:34,877 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 96 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:34,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-16 06:29:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2023-12-16 06:29:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.5088339222614842) internal successors, (427), 283 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 427 transitions. [2023-12-16 06:29:34,889 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 427 transitions. Word has length 72 [2023-12-16 06:29:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:34,889 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 427 transitions. [2023-12-16 06:29:34,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 427 transitions. [2023-12-16 06:29:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 06:29:34,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:34,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:29:34,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:34,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:34,891 INFO L85 PathProgramCache]: Analyzing trace with hash 703444096, now seen corresponding path program 1 times [2023-12-16 06:29:34,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:34,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664339683] [2023-12-16 06:29:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:34,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:34,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664339683] [2023-12-16 06:29:34,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664339683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:34,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:34,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:29:34,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321821192] [2023-12-16 06:29:34,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:34,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:29:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:34,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:29:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:34,986 INFO L87 Difference]: Start difference. First operand 284 states and 427 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:35,008 INFO L93 Difference]: Finished difference Result 736 states and 1145 transitions. [2023-12-16 06:29:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:29:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2023-12-16 06:29:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:35,011 INFO L225 Difference]: With dead ends: 736 [2023-12-16 06:29:35,011 INFO L226 Difference]: Without dead ends: 494 [2023-12-16 06:29:35,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:35,012 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 91 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:35,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 344 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-16 06:29:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 492. [2023-12-16 06:29:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.5376782077393076) internal successors, (755), 491 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 755 transitions. [2023-12-16 06:29:35,030 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 755 transitions. Word has length 73 [2023-12-16 06:29:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:35,030 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 755 transitions. [2023-12-16 06:29:35,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 755 transitions. [2023-12-16 06:29:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:29:35,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:35,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:35,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:29:35,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:35,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2124779600, now seen corresponding path program 1 times [2023-12-16 06:29:35,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:35,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676573721] [2023-12-16 06:29:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676573721] [2023-12-16 06:29:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676573721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:29:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886704682] [2023-12-16 06:29:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:29:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:29:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:35,126 INFO L87 Difference]: Start difference. First operand 492 states and 755 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2023-12-16 06:29:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:35,145 INFO L93 Difference]: Finished difference Result 1328 states and 2077 transitions. [2023-12-16 06:29:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:29:35,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 74 [2023-12-16 06:29:35,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:35,150 INFO L225 Difference]: With dead ends: 1328 [2023-12-16 06:29:35,150 INFO L226 Difference]: Without dead ends: 878 [2023-12-16 06:29:35,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:35,152 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:35,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 340 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-16 06:29:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 876. [2023-12-16 06:29:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 1.5485714285714285) internal successors, (1355), 875 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1355 transitions. [2023-12-16 06:29:35,172 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1355 transitions. Word has length 74 [2023-12-16 06:29:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:35,173 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1355 transitions. [2023-12-16 06:29:35,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2023-12-16 06:29:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1355 transitions. [2023-12-16 06:29:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:29:35,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:35,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:35,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:29:35,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:35,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash -496679292, now seen corresponding path program 1 times [2023-12-16 06:29:35,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:35,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225738629] [2023-12-16 06:29:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:35,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:35,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:35,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225738629] [2023-12-16 06:29:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225738629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:35,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:35,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:29:35,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727412045] [2023-12-16 06:29:35,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:35,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:29:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:29:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:35,267 INFO L87 Difference]: Start difference. First operand 876 states and 1355 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) [2023-12-16 06:29:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:35,289 INFO L93 Difference]: Finished difference Result 2416 states and 3773 transitions. [2023-12-16 06:29:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:29:35,289 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 [2023-12-16 06:29:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:35,296 INFO L225 Difference]: With dead ends: 2416 [2023-12-16 06:29:35,296 INFO L226 Difference]: Without dead ends: 1582 [2023-12-16 06:29:35,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:35,298 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 81 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:35,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-12-16 06:29:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1580. [2023-12-16 06:29:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1579 states have (on average 1.5471817606079796) internal successors, (2443), 1579 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2443 transitions. [2023-12-16 06:29:35,322 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2443 transitions. Word has length 75 [2023-12-16 06:29:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:35,323 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2443 transitions. [2023-12-16 06:29:35,323 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) [2023-12-16 06:29:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2443 transitions. [2023-12-16 06:29:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 06:29:35,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:35,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:35,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:29:35,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:35,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:35,326 INFO L85 PathProgramCache]: Analyzing trace with hash 422624278, now seen corresponding path program 1 times [2023-12-16 06:29:35,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:35,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671213247] [2023-12-16 06:29:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:35,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:35,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:35,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671213247] [2023-12-16 06:29:35,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671213247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:35,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:35,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:29:35,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609947200] [2023-12-16 06:29:35,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:35,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:29:35,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:35,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:29:35,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:35,412 INFO L87 Difference]: Start difference. First operand 1580 states and 2443 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) [2023-12-16 06:29:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:35,437 INFO L93 Difference]: Finished difference Result 4400 states and 6829 transitions. [2023-12-16 06:29:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:29:35,437 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 [2023-12-16 06:29:35,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:35,445 INFO L225 Difference]: With dead ends: 4400 [2023-12-16 06:29:35,446 INFO L226 Difference]: Without dead ends: 2862 [2023-12-16 06:29:35,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:35,449 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:35,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-16 06:29:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2860. [2023-12-16 06:29:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2859 states have (on average 1.5372507869884575) internal successors, (4395), 2859 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:35,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4395 transitions. [2023-12-16 06:29:35,502 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4395 transitions. Word has length 76 [2023-12-16 06:29:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:35,502 INFO L495 AbstractCegarLoop]: Abstraction has 2860 states and 4395 transitions. [2023-12-16 06:29:35,503 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) [2023-12-16 06:29:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4395 transitions. [2023-12-16 06:29:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:29:35,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:35,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:35,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:29:35,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:35,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 102257632, now seen corresponding path program 1 times [2023-12-16 06:29:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:35,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699613870] [2023-12-16 06:29:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:35,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:35,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:35,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699613870] [2023-12-16 06:29:35,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699613870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:35,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:35,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:29:35,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458492557] [2023-12-16 06:29:35,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:35,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:29:35,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:29:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:29:35,671 INFO L87 Difference]: Start difference. First operand 2860 states and 4395 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:36,032 INFO L93 Difference]: Finished difference Result 36676 states and 56631 transitions. [2023-12-16 06:29:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 06:29:36,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-16 06:29:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:36,122 INFO L225 Difference]: With dead ends: 36676 [2023-12-16 06:29:36,122 INFO L226 Difference]: Without dead ends: 33858 [2023-12-16 06:29:36,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-16 06:29:36,139 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1642 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:36,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 3266 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:29:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33858 states. [2023-12-16 06:29:36,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33858 to 5676. [2023-12-16 06:29:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 1.5187665198237885) internal successors, (8619), 5675 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 8619 transitions. [2023-12-16 06:29:36,535 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 8619 transitions. Word has length 77 [2023-12-16 06:29:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:36,535 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 8619 transitions. [2023-12-16 06:29:36,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 8619 transitions. [2023-12-16 06:29:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 06:29:36,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:36,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:36,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:29:36,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:36,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1436483108, now seen corresponding path program 1 times [2023-12-16 06:29:36,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:36,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420530091] [2023-12-16 06:29:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:36,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:36,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:36,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420530091] [2023-12-16 06:29:36,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420530091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:36,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:36,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:29:36,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856102336] [2023-12-16 06:29:36,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:36,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:29:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:29:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:36,628 INFO L87 Difference]: Start difference. First operand 5676 states and 8619 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2023-12-16 06:29:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:36,664 INFO L93 Difference]: Finished difference Result 14034 states and 21327 transitions. [2023-12-16 06:29:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:29:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2023-12-16 06:29:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:36,674 INFO L225 Difference]: With dead ends: 14034 [2023-12-16 06:29:36,675 INFO L226 Difference]: Without dead ends: 8400 [2023-12-16 06:29:36,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:29:36,682 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:36,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 296 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:36,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2023-12-16 06:29:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 8398. [2023-12-16 06:29:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8397 states have (on average 1.5068476836965583) internal successors, (12653), 8397 states have internal predecessors, (12653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 12653 transitions. [2023-12-16 06:29:36,823 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 12653 transitions. Word has length 79 [2023-12-16 06:29:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:36,823 INFO L495 AbstractCegarLoop]: Abstraction has 8398 states and 12653 transitions. [2023-12-16 06:29:36,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2023-12-16 06:29:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 12653 transitions. [2023-12-16 06:29:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 06:29:36,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:36,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:36,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:29:36,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:36,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1415480453, now seen corresponding path program 1 times [2023-12-16 06:29:36,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:36,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129526027] [2023-12-16 06:29:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:36,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:37,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:37,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129526027] [2023-12-16 06:29:37,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129526027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:37,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:37,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:29:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988235184] [2023-12-16 06:29:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:37,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:29:37,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:29:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:29:37,111 INFO L87 Difference]: Start difference. First operand 8398 states and 12653 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2023-12-16 06:29:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:37,310 INFO L93 Difference]: Finished difference Result 16754 states and 25263 transitions. [2023-12-16 06:29:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:29:37,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 [2023-12-16 06:29:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:37,321 INFO L225 Difference]: With dead ends: 16754 [2023-12-16 06:29:37,322 INFO L226 Difference]: Without dead ends: 8400 [2023-12-16 06:29:37,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:29:37,333 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 178 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:37,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 694 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2023-12-16 06:29:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 8398. [2023-12-16 06:29:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8397 states have (on average 1.4954150291770871) internal successors, (12557), 8397 states have internal predecessors, (12557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 12557 transitions. [2023-12-16 06:29:37,460 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 12557 transitions. Word has length 79 [2023-12-16 06:29:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:37,460 INFO L495 AbstractCegarLoop]: Abstraction has 8398 states and 12557 transitions. [2023-12-16 06:29:37,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2023-12-16 06:29:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 12557 transitions. [2023-12-16 06:29:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:29:37,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:37,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:37,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:29:37,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:37,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash -932130398, now seen corresponding path program 1 times [2023-12-16 06:29:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:37,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073431703] [2023-12-16 06:29:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:37,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:37,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073431703] [2023-12-16 06:29:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073431703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:37,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:37,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:29:37,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176964470] [2023-12-16 06:29:37,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:37,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:29:37,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:29:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:29:37,546 INFO L87 Difference]: Start difference. First operand 8398 states and 12557 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:37,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:37,673 INFO L93 Difference]: Finished difference Result 16752 states and 25070 transitions. [2023-12-16 06:29:37,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:29:37,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-16 06:29:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:37,683 INFO L225 Difference]: With dead ends: 16752 [2023-12-16 06:29:37,683 INFO L226 Difference]: Without dead ends: 8398 [2023-12-16 06:29:37,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:29:37,692 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 379 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:37,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 112 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:29:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2023-12-16 06:29:37,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 8398. [2023-12-16 06:29:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8397 states have (on average 1.4839823746576157) internal successors, (12461), 8397 states have internal predecessors, (12461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 12461 transitions. [2023-12-16 06:29:37,781 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 12461 transitions. Word has length 80 [2023-12-16 06:29:37,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:37,781 INFO L495 AbstractCegarLoop]: Abstraction has 8398 states and 12461 transitions. [2023-12-16 06:29:37,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 12461 transitions. [2023-12-16 06:29:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:29:37,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:37,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:37,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:29:37,782 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:37,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1694994105, now seen corresponding path program 1 times [2023-12-16 06:29:37,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:37,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589737548] [2023-12-16 06:29:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:37,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:37,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:37,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589737548] [2023-12-16 06:29:37,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589737548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:37,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:37,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:29:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317450986] [2023-12-16 06:29:37,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:37,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:29:37,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:29:37,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:29:37,850 INFO L87 Difference]: Start difference. First operand 8398 states and 12461 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:37,928 INFO L93 Difference]: Finished difference Result 16752 states and 24878 transitions. [2023-12-16 06:29:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:29:37,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-16 06:29:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:37,938 INFO L225 Difference]: With dead ends: 16752 [2023-12-16 06:29:37,938 INFO L226 Difference]: Without dead ends: 8398 [2023-12-16 06:29:37,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:29:37,946 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 350 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:37,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 128 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2023-12-16 06:29:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 8398. [2023-12-16 06:29:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8397 states have (on average 1.4725497201381446) internal successors, (12365), 8397 states have internal predecessors, (12365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 12365 transitions. [2023-12-16 06:29:38,065 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 12365 transitions. Word has length 80 [2023-12-16 06:29:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:38,065 INFO L495 AbstractCegarLoop]: Abstraction has 8398 states and 12365 transitions. [2023-12-16 06:29:38,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 12365 transitions. [2023-12-16 06:29:38,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:29:38,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:38,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:38,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:29:38,066 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:38,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:38,067 INFO L85 PathProgramCache]: Analyzing trace with hash -829461716, now seen corresponding path program 1 times [2023-12-16 06:29:38,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:38,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107287157] [2023-12-16 06:29:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:38,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:38,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107287157] [2023-12-16 06:29:38,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107287157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:38,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:38,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:29:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420520900] [2023-12-16 06:29:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:38,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:29:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:38,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:29:38,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:29:38,124 INFO L87 Difference]: Start difference. First operand 8398 states and 12365 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:38,201 INFO L93 Difference]: Finished difference Result 16752 states and 24686 transitions. [2023-12-16 06:29:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:29:38,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-16 06:29:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:38,211 INFO L225 Difference]: With dead ends: 16752 [2023-12-16 06:29:38,211 INFO L226 Difference]: Without dead ends: 8398 [2023-12-16 06:29:38,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:29:38,218 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 399 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:38,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 96 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2023-12-16 06:29:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 8398. [2023-12-16 06:29:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8397 states have (on average 1.4573061807788497) internal successors, (12237), 8397 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 12237 transitions. [2023-12-16 06:29:38,292 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 12237 transitions. Word has length 80 [2023-12-16 06:29:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:38,292 INFO L495 AbstractCegarLoop]: Abstraction has 8398 states and 12237 transitions. [2023-12-16 06:29:38,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 12237 transitions. [2023-12-16 06:29:38,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:29:38,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:38,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:38,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:29:38,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:38,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1724088465, now seen corresponding path program 1 times [2023-12-16 06:29:38,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:38,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078287898] [2023-12-16 06:29:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:38,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:38,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078287898] [2023-12-16 06:29:38,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078287898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:38,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:38,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:29:38,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645203549] [2023-12-16 06:29:38,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:38,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:29:38,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:38,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:29:38,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:29:38,426 INFO L87 Difference]: Start difference. First operand 8398 states and 12237 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:38,500 INFO L93 Difference]: Finished difference Result 15164 states and 22033 transitions. [2023-12-16 06:29:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:29:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-16 06:29:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:38,515 INFO L225 Difference]: With dead ends: 15164 [2023-12-16 06:29:38,515 INFO L226 Difference]: Without dead ends: 15162 [2023-12-16 06:29:38,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:29:38,517 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 200 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:38,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 680 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:29:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15162 states. [2023-12-16 06:29:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15162 to 8654. [2023-12-16 06:29:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8654 states, 8653 states have (on average 1.4400785854616895) internal successors, (12461), 8653 states have internal predecessors, (12461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8654 states to 8654 states and 12461 transitions. [2023-12-16 06:29:38,603 INFO L78 Accepts]: Start accepts. Automaton has 8654 states and 12461 transitions. Word has length 80 [2023-12-16 06:29:38,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:38,604 INFO L495 AbstractCegarLoop]: Abstraction has 8654 states and 12461 transitions. [2023-12-16 06:29:38,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,604 INFO L276 IsEmpty]: Start isEmpty. Operand 8654 states and 12461 transitions. [2023-12-16 06:29:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:29:38,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:38,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:38,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:29:38,607 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:38,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:38,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2063763669, now seen corresponding path program 1 times [2023-12-16 06:29:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:38,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479126881] [2023-12-16 06:29:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:38,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:29:38,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:38,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479126881] [2023-12-16 06:29:38,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479126881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:38,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:38,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:29:38,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931172505] [2023-12-16 06:29:38,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:38,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:29:38,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:29:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:29:38,729 INFO L87 Difference]: Start difference. First operand 8654 states and 12461 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:38,947 INFO L93 Difference]: Finished difference Result 59196 states and 85364 transitions. [2023-12-16 06:29:38,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:29:38,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-16 06:29:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:39,128 INFO L225 Difference]: With dead ends: 59196 [2023-12-16 06:29:39,129 INFO L226 Difference]: Without dead ends: 53306 [2023-12-16 06:29:39,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:29:39,142 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1346 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:39,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 1633 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:29:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53306 states. [2023-12-16 06:29:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53306 to 15918. [2023-12-16 06:29:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15918 states, 15917 states have (on average 1.4362631149085883) internal successors, (22861), 15917 states have internal predecessors, (22861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15918 states to 15918 states and 22861 transitions. [2023-12-16 06:29:39,538 INFO L78 Accepts]: Start accepts. Automaton has 15918 states and 22861 transitions. Word has length 110 [2023-12-16 06:29:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:39,538 INFO L495 AbstractCegarLoop]: Abstraction has 15918 states and 22861 transitions. [2023-12-16 06:29:39,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 15918 states and 22861 transitions. [2023-12-16 06:29:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:29:39,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:39,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:39,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:29:39,543 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:39,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1412962523, now seen corresponding path program 1 times [2023-12-16 06:29:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:39,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134140155] [2023-12-16 06:29:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 06:29:39,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:39,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134140155] [2023-12-16 06:29:39,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134140155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:39,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:39,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:29:39,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851512382] [2023-12-16 06:29:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:39,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:29:39,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:39,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:29:39,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:29:39,726 INFO L87 Difference]: Start difference. First operand 15918 states and 22861 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:39,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:39,974 INFO L93 Difference]: Finished difference Result 67804 states and 97716 transitions. [2023-12-16 06:29:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:29:39,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 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 110 [2023-12-16 06:29:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:40,052 INFO L225 Difference]: With dead ends: 67804 [2023-12-16 06:29:40,052 INFO L226 Difference]: Without dead ends: 59194 [2023-12-16 06:29:40,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:29:40,080 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1347 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:40,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1582 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:29:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59194 states. [2023-12-16 06:29:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59194 to 27470. [2023-12-16 06:29:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27470 states, 27469 states have (on average 1.4333612435836762) internal successors, (39373), 27469 states have internal predecessors, (39373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27470 states to 27470 states and 39373 transitions. [2023-12-16 06:29:40,904 INFO L78 Accepts]: Start accepts. Automaton has 27470 states and 39373 transitions. Word has length 110 [2023-12-16 06:29:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:40,904 INFO L495 AbstractCegarLoop]: Abstraction has 27470 states and 39373 transitions. [2023-12-16 06:29:40,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 27470 states and 39373 transitions. [2023-12-16 06:29:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:29:40,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:40,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:40,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:29:40,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:40,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash -562474911, now seen corresponding path program 1 times [2023-12-16 06:29:40,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:40,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25950817] [2023-12-16 06:29:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:40,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 06:29:41,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:41,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25950817] [2023-12-16 06:29:41,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25950817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:41,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:41,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:29:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120455718] [2023-12-16 06:29:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:41,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:29:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:29:41,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:29:41,172 INFO L87 Difference]: Start difference. First operand 27470 states and 39373 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:41,538 INFO L93 Difference]: Finished difference Result 76412 states and 110036 transitions. [2023-12-16 06:29:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:29:41,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 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 110 [2023-12-16 06:29:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:41,711 INFO L225 Difference]: With dead ends: 76412 [2023-12-16 06:29:41,711 INFO L226 Difference]: Without dead ends: 67802 [2023-12-16 06:29:41,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:29:41,772 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1433 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:41,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 1488 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:29:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67802 states. [2023-12-16 06:29:42,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67802 to 36078. [2023-12-16 06:29:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36078 states, 36077 states have (on average 1.4328519555395405) internal successors, (51693), 36077 states have internal predecessors, (51693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36078 states to 36078 states and 51693 transitions. [2023-12-16 06:29:42,884 INFO L78 Accepts]: Start accepts. Automaton has 36078 states and 51693 transitions. Word has length 110 [2023-12-16 06:29:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:42,884 INFO L495 AbstractCegarLoop]: Abstraction has 36078 states and 51693 transitions. [2023-12-16 06:29:42,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 36078 states and 51693 transitions. [2023-12-16 06:29:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:29:42,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:42,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:42,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:29:42,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:42,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2007950323, now seen corresponding path program 1 times [2023-12-16 06:29:42,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:42,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453834936] [2023-12-16 06:29:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:42,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 06:29:43,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:43,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453834936] [2023-12-16 06:29:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453834936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:43,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:29:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642235770] [2023-12-16 06:29:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:43,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:29:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:29:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:29:43,014 INFO L87 Difference]: Start difference. First operand 36078 states and 51693 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:43,395 INFO L93 Difference]: Finished difference Result 85020 states and 122356 transitions. [2023-12-16 06:29:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:29:43,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 110 [2023-12-16 06:29:43,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:43,501 INFO L225 Difference]: With dead ends: 85020 [2023-12-16 06:29:43,501 INFO L226 Difference]: Without dead ends: 76410 [2023-12-16 06:29:43,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:29:43,528 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1350 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:43,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 1590 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:29:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76410 states. [2023-12-16 06:29:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76410 to 44686. [2023-12-16 06:29:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44686 states, 44685 states have (on average 1.4325388832941703) internal successors, (64013), 44685 states have internal predecessors, (64013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44686 states to 44686 states and 64013 transitions. [2023-12-16 06:29:44,394 INFO L78 Accepts]: Start accepts. Automaton has 44686 states and 64013 transitions. Word has length 110 [2023-12-16 06:29:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:44,394 INFO L495 AbstractCegarLoop]: Abstraction has 44686 states and 64013 transitions. [2023-12-16 06:29:44,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:44,394 INFO L276 IsEmpty]: Start isEmpty. Operand 44686 states and 64013 transitions. [2023-12-16 06:29:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:29:44,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:44,414 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:44,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:29:44,415 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:44,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:44,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1133070867, now seen corresponding path program 1 times [2023-12-16 06:29:44,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:44,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323513184] [2023-12-16 06:29:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:44,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 06:29:44,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323513184] [2023-12-16 06:29:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323513184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:44,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:44,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:29:44,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493268264] [2023-12-16 06:29:44,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:44,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:29:44,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:29:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:29:44,530 INFO L87 Difference]: Start difference. First operand 44686 states and 64013 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:44,949 INFO L93 Difference]: Finished difference Result 93628 states and 134676 transitions. [2023-12-16 06:29:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:29:44,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 110 [2023-12-16 06:29:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:45,062 INFO L225 Difference]: With dead ends: 93628 [2023-12-16 06:29:45,062 INFO L226 Difference]: Without dead ends: 85018 [2023-12-16 06:29:45,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:29:45,091 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1187 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:45,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1681 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:29:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85018 states. [2023-12-16 06:29:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85018 to 53294. [2023-12-16 06:29:46,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53294 states, 53293 states have (on average 1.4323269472538607) internal successors, (76333), 53293 states have internal predecessors, (76333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53294 states to 53294 states and 76333 transitions. [2023-12-16 06:29:46,175 INFO L78 Accepts]: Start accepts. Automaton has 53294 states and 76333 transitions. Word has length 110 [2023-12-16 06:29:46,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:46,180 INFO L495 AbstractCegarLoop]: Abstraction has 53294 states and 76333 transitions. [2023-12-16 06:29:46,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:46,180 INFO L276 IsEmpty]: Start isEmpty. Operand 53294 states and 76333 transitions. [2023-12-16 06:29:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:29:46,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:46,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:46,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:29:46,352 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:46,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1990971545, now seen corresponding path program 1 times [2023-12-16 06:29:46,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:46,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830618749] [2023-12-16 06:29:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:46,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 06:29:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830618749] [2023-12-16 06:29:46,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830618749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:29:46,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:29:46,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:29:46,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739188738] [2023-12-16 06:29:46,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:29:46,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:29:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:29:46,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:29:46,527 INFO L87 Difference]: Start difference. First operand 53294 states and 76333 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:29:46,857 INFO L93 Difference]: Finished difference Result 102236 states and 146996 transitions. [2023-12-16 06:29:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:29:46,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 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 110 [2023-12-16 06:29:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:29:47,104 INFO L225 Difference]: With dead ends: 102236 [2023-12-16 06:29:47,104 INFO L226 Difference]: Without dead ends: 93626 [2023-12-16 06:29:47,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:29:47,129 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1192 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:29:47,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1749 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:29:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93626 states. [2023-12-16 06:29:48,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93626 to 61902. [2023-12-16 06:29:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61902 states, 61901 states have (on average 1.4321739551865076) internal successors, (88653), 61901 states have internal predecessors, (88653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61902 states to 61902 states and 88653 transitions. [2023-12-16 06:29:48,242 INFO L78 Accepts]: Start accepts. Automaton has 61902 states and 88653 transitions. Word has length 110 [2023-12-16 06:29:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:29:48,242 INFO L495 AbstractCegarLoop]: Abstraction has 61902 states and 88653 transitions. [2023-12-16 06:29:48,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:29:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 61902 states and 88653 transitions. [2023-12-16 06:29:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 06:29:48,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:29:48,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:29:48,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:29:48,249 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:29:48,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:29:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1764785467, now seen corresponding path program 1 times [2023-12-16 06:29:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:29:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908010006] [2023-12-16 06:29:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:48,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:29:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:48,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:29:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908010006] [2023-12-16 06:29:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908010006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:29:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876914923] [2023-12-16 06:29:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:29:48,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:29:48,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:29:48,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:29:48,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:29:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:29:49,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 06:29:49,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:29:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:49,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:29:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:29:49,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876914923] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:29:49,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:29:49,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 21 [2023-12-16 06:29:49,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587973157] [2023-12-16 06:29:49,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:29:49,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 06:29:49,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:29:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 06:29:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-16 06:29:49,813 INFO L87 Difference]: Start difference. First operand 61902 states and 88653 transitions. Second operand has 21 states, 21 states have (on average 15.428571428571429) internal successors, (324), 21 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:30:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:30:11,343 INFO L93 Difference]: Finished difference Result 1372983 states and 1937728 transitions. [2023-12-16 06:30:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 409 states. [2023-12-16 06:30:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 15.428571428571429) internal successors, (324), 21 states have internal predecessors, (324), 0 states have call successors, (0), 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 111 [2023-12-16 06:30:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:30:14,539 INFO L225 Difference]: With dead ends: 1372983 [2023-12-16 06:30:14,540 INFO L226 Difference]: Without dead ends: 1303069 [2023-12-16 06:30:15,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87721 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=18651, Invalid=163251, Unknown=0, NotChecked=0, Total=181902 [2023-12-16 06:30:15,371 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 16897 mSDsluCounter, 4540 mSDsCounter, 0 mSdLazyCounter, 7538 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16897 SdHoareTripleChecker+Valid, 5048 SdHoareTripleChecker+Invalid, 7819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 7538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-16 06:30:15,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16897 Valid, 5048 Invalid, 7819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [281 Valid, 7538 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-16 06:30:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303069 states. [2023-12-16 06:30:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303069 to 531942. [2023-12-16 06:30:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531942 states, 531941 states have (on average 1.4078760614429044) internal successors, (748907), 531941 states have internal predecessors, (748907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:30:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531942 states to 531942 states and 748907 transitions. [2023-12-16 06:30:28,235 INFO L78 Accepts]: Start accepts. Automaton has 531942 states and 748907 transitions. Word has length 111 [2023-12-16 06:30:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:30:28,236 INFO L495 AbstractCegarLoop]: Abstraction has 531942 states and 748907 transitions. [2023-12-16 06:30:28,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 15.428571428571429) internal successors, (324), 21 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:30:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 531942 states and 748907 transitions. [2023-12-16 06:30:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 06:30:28,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:30:28,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:30:28,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 06:30:28,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:30:28,450 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:30:28,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:30:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1462579103, now seen corresponding path program 1 times [2023-12-16 06:30:28,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:30:28,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539150749] [2023-12-16 06:30:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:30:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:30:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:30:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:30:29,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:30:29,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539150749] [2023-12-16 06:30:29,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539150749] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:30:29,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669912106] [2023-12-16 06:30:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:30:29,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:30:29,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:30:29,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:30:29,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 06:30:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:30:29,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 06:30:29,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:30:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:30:29,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:30:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:30:30,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669912106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:30:30,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:30:30,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2023-12-16 06:30:30,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957079099] [2023-12-16 06:30:30,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:30:30,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 06:30:30,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:30:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 06:30:30,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2023-12-16 06:30:30,370 INFO L87 Difference]: Start difference. First operand 531942 states and 748907 transitions. Second operand has 27 states, 27 states have (on average 11.333333333333334) internal successors, (306), 26 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 06:30:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-16 06:30:33,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5353 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2464, Invalid=12788, Unknown=0, NotChecked=0, Total=15252 [2023-12-16 06:30:33,902 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 6659 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6659 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:30:33,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6659 Valid, 1701 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 06:30:33,903 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:30:33,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 06:30:33,934 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:30:33,934 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:30:34,103 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,SelfDestructingSolverStorable20 [2023-12-16 06:30:34,104 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (531942states) and FLOYD_HOARE automaton (currently 100 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-2-1 term,while SimplifyDDA2 was simplifying 7 xjuncts wrt. a ATOM-1 context. [2023-12-16 06:30:34,108 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] [2023-12-16 06:30:34,110 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:30:34,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:30:34 BoogieIcfgContainer [2023-12-16 06:30:34,112 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:30:34,113 INFO L158 Benchmark]: Toolchain (without parser) took 61035.57ms. Allocated memory was 216.0MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 163.6MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-16 06:30:34,113 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 179.3MB. Free memory was 126.7MB in the beginning and 126.5MB in the end (delta: 218.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:30:34,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.57ms. Allocated memory is still 216.0MB. Free memory was 163.1MB in the beginning and 144.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 06:30:34,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.22ms. Allocated memory is still 216.0MB. Free memory was 144.3MB in the beginning and 141.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:30:34,113 INFO L158 Benchmark]: Boogie Preprocessor took 52.60ms. Allocated memory is still 216.0MB. Free memory was 141.2MB in the beginning and 138.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:30:34,114 INFO L158 Benchmark]: RCFGBuilder took 642.82ms. Allocated memory is still 216.0MB. Free memory was 138.0MB in the beginning and 102.4MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-16 06:30:34,114 INFO L158 Benchmark]: TraceAbstraction took 59977.21ms. Allocated memory was 216.0MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 101.8MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-12-16 06:30:34,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 179.3MB. Free memory was 126.7MB in the beginning and 126.5MB in the end (delta: 218.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 318.57ms. Allocated memory is still 216.0MB. Free memory was 163.1MB in the beginning and 144.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.22ms. Allocated memory is still 216.0MB. Free memory was 144.3MB in the beginning and 141.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.60ms. Allocated memory is still 216.0MB. Free memory was 141.2MB in the beginning and 138.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 642.82ms. Allocated memory is still 216.0MB. Free memory was 138.0MB in the beginning and 102.4MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 59977.21ms. Allocated memory was 216.0MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 101.8MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 3.1GB. 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: 340]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 340). Cancelled while NwaCegarLoop was constructing difference of abstraction (531942states) and FLOYD_HOARE automaton (currently 100 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-2-1 term,while SimplifyDDA2 was simplifying 7 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.9s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 33.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35195 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35195 mSDsluCounter, 23843 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19305 mSDsCounter, 326 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11367 IncrementalHoareTripleChecker+Invalid, 11693 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 326 mSolverCounterUnsat, 4538 mSDtfsCounter, 11367 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1124 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 664 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93110 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=531942occurred in iteration=20, InterpolantAutomatonStates: 520, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 1001841 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 2102 NumberOfCodeBlocks, 2102 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2300 ConstructedInterpolants, 0 QuantifiedInterpolants, 16584 SizeOfPredicates, 16 NumberOfNonLiveVariables, 921 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 140/198 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