/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:03:36,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:03:36,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:03:36,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:03:36,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:03:36,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:03:36,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:03:36,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:03:36,425 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:03:36,428 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:03:36,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:03:36,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:03:36,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:03:36,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:03:36,430 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:03:36,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:03:36,430 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:03:36,430 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:03:36,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:03:36,431 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:03:36,431 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:03:36,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:03:36,431 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:03:36,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:03:36,432 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:03:36,432 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:03:36,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:03:36,432 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:03:36,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:03:36,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:03:36,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:03:36,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:03:36,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:03:36,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:03:36,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:03:36,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:03:36,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:03:36,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:03:36,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:03:36,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:03:36,435 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:03:36,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:03:36,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:03:36,435 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:03:36,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:03:36,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:03:36,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:03:36,674 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:03:36,674 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:03:36,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 00:03:37,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:03:38,286 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:03:38,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 00:03:38,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57367dd36/aa1a2cea84be45ddba7b1cba27fc4ce7/FLAGbd4664cc7 [2023-12-19 00:03:38,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57367dd36/aa1a2cea84be45ddba7b1cba27fc4ce7 [2023-12-19 00:03:38,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:03:38,330 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:03:38,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:03:38,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:03:38,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:03:38,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:03:38" (1/1) ... [2023-12-19 00:03:38,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5579fbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:38, skipping insertion in model container [2023-12-19 00:03:38,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:03:38" (1/1) ... [2023-12-19 00:03:38,428 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:03:38,697 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2023-12-19 00:03:38,742 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2023-12-19 00:03:39,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:03:39,358 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:03:39,392 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2023-12-19 00:03:39,403 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2023-12-19 00:03:39,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:03:39,800 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:03:39,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39 WrapperNode [2023-12-19 00:03:39,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:03:39,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:03:39,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:03:39,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:03:39,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:39,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,193 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5033 [2023-12-19 00:03:40,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:03:40,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:03:40,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:03:40,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:03:40,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,272 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,399 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]. [2023-12-19 00:03:40,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:03:40,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:03:40,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:03:40,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:03:40,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (1/1) ... [2023-12-19 00:03:40,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:03:40,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:03:40,794 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) [2023-12-19 00:03:40,810 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 [2023-12-19 00:03:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:03:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:03:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:03:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:03:40,927 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:03:40,929 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:03:44,227 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:03:44,278 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:03:44,278 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:03:44,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:03:44 BoogieIcfgContainer [2023-12-19 00:03:44,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:03:44,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:03:44,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:03:44,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:03:44,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:03:38" (1/3) ... [2023-12-19 00:03:44,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da3acd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:03:44, skipping insertion in model container [2023-12-19 00:03:44,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:03:39" (2/3) ... [2023-12-19 00:03:44,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da3acd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:03:44, skipping insertion in model container [2023-12-19 00:03:44,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:03:44" (3/3) ... [2023-12-19 00:03:44,289 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 00:03:44,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:03:44,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:03:44,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:03:44,383 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;@2ceaf02c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:03:44,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:03:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 00:03:44,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:44,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:03:44,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:44,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash -581144777, now seen corresponding path program 1 times [2023-12-19 00:03:44,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:44,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697149664] [2023-12-19 00:03:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:44,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:44,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:44,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697149664] [2023-12-19 00:03:44,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697149664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:44,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:44,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:03:44,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015950021] [2023-12-19 00:03:44,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:44,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:03:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:03:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:03:44,627 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:44,715 INFO L93 Difference]: Finished difference Result 1612 states and 3179 transitions. [2023-12-19 00:03:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:03:44,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-19 00:03:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:44,730 INFO L225 Difference]: With dead ends: 1612 [2023-12-19 00:03:44,731 INFO L226 Difference]: Without dead ends: 816 [2023-12-19 00:03:44,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:03:44,739 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:44,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-19 00:03:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-19 00:03:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-19 00:03:44,802 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-19 00:03:44,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:44,802 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-19 00:03:44,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-19 00:03:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 00:03:44,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:44,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:03:44,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:03:44,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:44,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:44,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1861008455, now seen corresponding path program 1 times [2023-12-19 00:03:44,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:44,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252074341] [2023-12-19 00:03:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:44,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:45,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:45,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252074341] [2023-12-19 00:03:45,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252074341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:45,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:45,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:03:45,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100798551] [2023-12-19 00:03:45,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:45,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:03:45,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:03:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:03:45,022 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:45,087 INFO L93 Difference]: Finished difference Result 854 states and 1604 transitions. [2023-12-19 00:03:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:03:45,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-19 00:03:45,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:45,091 INFO L225 Difference]: With dead ends: 854 [2023-12-19 00:03:45,091 INFO L226 Difference]: Without dead ends: 816 [2023-12-19 00:03:45,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:03:45,092 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 0 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:45,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4599 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-19 00:03:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-19 00:03:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-19 00:03:45,120 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-19 00:03:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:45,121 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-19 00:03:45,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-19 00:03:45,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-19 00:03:45,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:45,125 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] [2023-12-19 00:03:45,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:03:45,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:45,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1583731468, now seen corresponding path program 1 times [2023-12-19 00:03:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802763576] [2023-12-19 00:03:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:45,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:45,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802763576] [2023-12-19 00:03:45,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802763576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:45,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:45,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:03:45,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398614561] [2023-12-19 00:03:45,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:45,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:03:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:03:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:03:45,261 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:45,404 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-12-19 00:03:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 00:03:45,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-19 00:03:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:45,408 INFO L225 Difference]: With dead ends: 1096 [2023-12-19 00:03:45,408 INFO L226 Difference]: Without dead ends: 1061 [2023-12-19 00:03:45,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:03:45,409 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:45,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:03:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-12-19 00:03:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-12-19 00:03:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-12-19 00:03:45,423 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-12-19 00:03:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:45,423 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-12-19 00:03:45,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-12-19 00:03:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 00:03:45,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:45,424 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] [2023-12-19 00:03:45,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:03:45,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:45,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:45,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1671128700, now seen corresponding path program 1 times [2023-12-19 00:03:45,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:45,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188443017] [2023-12-19 00:03:45,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:45,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:45,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:45,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188443017] [2023-12-19 00:03:45,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188443017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:45,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:45,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:45,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7762070] [2023-12-19 00:03:45,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:45,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:45,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:45,503 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:45,537 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-12-19 00:03:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:45,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-19 00:03:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:45,542 INFO L225 Difference]: With dead ends: 974 [2023-12-19 00:03:45,542 INFO L226 Difference]: Without dead ends: 906 [2023-12-19 00:03:45,542 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 [2023-12-19 00:03:45,548 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:45,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-19 00:03:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-19 00:03:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-12-19 00:03:45,568 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-12-19 00:03:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:45,569 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-12-19 00:03:45,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-12-19 00:03:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 00:03:45,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:45,572 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] [2023-12-19 00:03:45,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:03:45,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:45,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1668983748, now seen corresponding path program 1 times [2023-12-19 00:03:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:45,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024763301] [2023-12-19 00:03:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:45,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:45,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024763301] [2023-12-19 00:03:45,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024763301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:45,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:45,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:03:45,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742200684] [2023-12-19 00:03:45,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:45,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:03:45,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:03:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:03:45,834 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:45,946 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-12-19 00:03:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:03:45,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-19 00:03:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:45,951 INFO L225 Difference]: With dead ends: 1029 [2023-12-19 00:03:45,951 INFO L226 Difference]: Without dead ends: 906 [2023-12-19 00:03:45,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:03:45,956 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:45,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1719 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-19 00:03:45,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-19 00:03:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-12-19 00:03:45,974 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-12-19 00:03:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:45,975 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-12-19 00:03:45,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-12-19 00:03:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-19 00:03:45,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:45,978 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] [2023-12-19 00:03:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:03:45,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:45,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash -327272229, now seen corresponding path program 1 times [2023-12-19 00:03:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:45,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337949084] [2023-12-19 00:03:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:45,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:46,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:46,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337949084] [2023-12-19 00:03:46,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337949084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:46,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:46,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:03:46,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174409599] [2023-12-19 00:03:46,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:46,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:03:46,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:46,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:03:46,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:03:46,118 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:46,145 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-12-19 00:03:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:03:46,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-19 00:03:46,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:46,149 INFO L225 Difference]: With dead ends: 912 [2023-12-19 00:03:46,149 INFO L226 Difference]: Without dead ends: 910 [2023-12-19 00:03:46,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:03:46,151 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:46,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-19 00:03:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-19 00:03:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-12-19 00:03:46,171 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-12-19 00:03:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:46,172 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-12-19 00:03:46,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-12-19 00:03:46,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:03:46,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:46,173 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] [2023-12-19 00:03:46,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:03:46,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:46,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:46,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1398089532, now seen corresponding path program 1 times [2023-12-19 00:03:46,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:46,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808988027] [2023-12-19 00:03:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808988027] [2023-12-19 00:03:46,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808988027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:46,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:46,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:46,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672423494] [2023-12-19 00:03:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:46,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:46,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:46,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:46,210 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:46,234 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-12-19 00:03:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:46,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 00:03:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:46,238 INFO L225 Difference]: With dead ends: 1046 [2023-12-19 00:03:46,239 INFO L226 Difference]: Without dead ends: 974 [2023-12-19 00:03:46,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:46,240 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 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 [2023-12-19 00:03:46,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:46,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-19 00:03:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-12-19 00:03:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-12-19 00:03:46,253 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-12-19 00:03:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:46,254 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-12-19 00:03:46,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-12-19 00:03:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:03:46,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:46,255 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] [2023-12-19 00:03:46,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:03:46,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:46,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 812377404, now seen corresponding path program 1 times [2023-12-19 00:03:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:46,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144077380] [2023-12-19 00:03:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:46,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144077380] [2023-12-19 00:03:46,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144077380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:46,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:46,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120359447] [2023-12-19 00:03:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:46,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:46,311 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:46,333 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-12-19 00:03:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:46,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 00:03:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:46,337 INFO L225 Difference]: With dead ends: 1326 [2023-12-19 00:03:46,337 INFO L226 Difference]: Without dead ends: 1137 [2023-12-19 00:03:46,338 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 [2023-12-19 00:03:46,339 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 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 [2023-12-19 00:03:46,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:46,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-19 00:03:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-12-19 00:03:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-12-19 00:03:46,357 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-12-19 00:03:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:46,357 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-12-19 00:03:46,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-12-19 00:03:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:03:46,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:46,357 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] [2023-12-19 00:03:46,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:03:46,358 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:46,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1701110844, now seen corresponding path program 1 times [2023-12-19 00:03:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778319540] [2023-12-19 00:03:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:46,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:46,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778319540] [2023-12-19 00:03:46,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778319540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:46,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:46,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265754243] [2023-12-19 00:03:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:46,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:46,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:46,399 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:46,426 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-12-19 00:03:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:46,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 00:03:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:46,432 INFO L225 Difference]: With dead ends: 1791 [2023-12-19 00:03:46,432 INFO L226 Difference]: Without dead ends: 1439 [2023-12-19 00:03:46,433 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 [2023-12-19 00:03:46,434 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 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 [2023-12-19 00:03:46,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-12-19 00:03:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-12-19 00:03:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-12-19 00:03:46,455 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-12-19 00:03:46,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:46,455 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-12-19 00:03:46,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-12-19 00:03:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:03:46,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:46,455 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] [2023-12-19 00:03:46,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:03:46,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:46,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1438033468, now seen corresponding path program 1 times [2023-12-19 00:03:46,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218323133] [2023-12-19 00:03:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:46,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:46,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218323133] [2023-12-19 00:03:46,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218323133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:46,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:46,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431826514] [2023-12-19 00:03:46,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:46,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:46,490 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:46,523 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-12-19 00:03:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:46,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 00:03:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:46,528 INFO L225 Difference]: With dead ends: 2649 [2023-12-19 00:03:46,528 INFO L226 Difference]: Without dead ends: 1995 [2023-12-19 00:03:46,529 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 [2023-12-19 00:03:46,530 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 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 [2023-12-19 00:03:46,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:46,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-19 00:03:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-12-19 00:03:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-12-19 00:03:46,571 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-12-19 00:03:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:46,571 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-12-19 00:03:46,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-12-19 00:03:46,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-19 00:03:46,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:46,572 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] [2023-12-19 00:03:46,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:03:46,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:46,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2145314009, now seen corresponding path program 1 times [2023-12-19 00:03:46,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:46,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388019261] [2023-12-19 00:03:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:46,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:46,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:46,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388019261] [2023-12-19 00:03:46,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388019261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:46,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:46,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:03:46,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638038570] [2023-12-19 00:03:46,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:46,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:46,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:46,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:46,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:46,607 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:49,423 INFO L93 Difference]: Finished difference Result 3497 states and 6086 transitions. [2023-12-19 00:03:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:49,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-19 00:03:49,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:49,432 INFO L225 Difference]: With dead ends: 3497 [2023-12-19 00:03:49,432 INFO L226 Difference]: Without dead ends: 2744 [2023-12-19 00:03:49,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:49,434 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 851 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:49,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 157 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 00:03:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2023-12-19 00:03:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2744. [2023-12-19 00:03:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2742 states have (on average 1.6732312180889861) internal successors, (4588), 2743 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4588 transitions. [2023-12-19 00:03:49,483 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4588 transitions. Word has length 47 [2023-12-19 00:03:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:49,484 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4588 transitions. [2023-12-19 00:03:49,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:49,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4588 transitions. [2023-12-19 00:03:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:03:49,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:49,485 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] [2023-12-19 00:03:49,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:03:49,485 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:49,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2057850860, now seen corresponding path program 1 times [2023-12-19 00:03:49,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:49,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634883327] [2023-12-19 00:03:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:49,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:03:49,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:49,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634883327] [2023-12-19 00:03:49,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634883327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:49,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:49,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:03:49,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788543338] [2023-12-19 00:03:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:49,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:03:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:03:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:03:49,559 INFO L87 Difference]: Start difference. First operand 2744 states and 4588 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:49,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:49,721 INFO L93 Difference]: Finished difference Result 7506 states and 11449 transitions. [2023-12-19 00:03:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:03:49,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 61 [2023-12-19 00:03:49,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:49,742 INFO L225 Difference]: With dead ends: 7506 [2023-12-19 00:03:49,742 INFO L226 Difference]: Without dead ends: 6640 [2023-12-19 00:03:49,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:03:49,744 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:49,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2023-12-19 00:03:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3784. [2023-12-19 00:03:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.6044420941300899) internal successors, (6068), 3783 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 6068 transitions. [2023-12-19 00:03:49,853 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 6068 transitions. Word has length 61 [2023-12-19 00:03:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:49,854 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 6068 transitions. [2023-12-19 00:03:49,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:49,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 6068 transitions. [2023-12-19 00:03:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:03:49,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:49,856 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] [2023-12-19 00:03:49,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:03:49,856 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:49,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:49,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1651404308, now seen corresponding path program 1 times [2023-12-19 00:03:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296447289] [2023-12-19 00:03:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:03:49,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:49,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296447289] [2023-12-19 00:03:49,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296447289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:49,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:49,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:03:49,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038156504] [2023-12-19 00:03:49,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:49,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:03:49,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:49,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:03:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:03:49,958 INFO L87 Difference]: Start difference. First operand 3784 states and 6068 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:50,114 INFO L93 Difference]: Finished difference Result 8714 states and 13177 transitions. [2023-12-19 00:03:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:03:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 61 [2023-12-19 00:03:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:50,143 INFO L225 Difference]: With dead ends: 8714 [2023-12-19 00:03:50,143 INFO L226 Difference]: Without dead ends: 7504 [2023-12-19 00:03:50,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:03:50,148 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:50,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2023-12-19 00:03:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 5424. [2023-12-19 00:03:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.5485060863150129) internal successors, (8396), 5423 states have internal predecessors, (8396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8396 transitions. [2023-12-19 00:03:50,288 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8396 transitions. Word has length 61 [2023-12-19 00:03:50,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:50,289 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8396 transitions. [2023-12-19 00:03:50,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:50,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8396 transitions. [2023-12-19 00:03:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:03:50,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:50,290 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] [2023-12-19 00:03:50,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:03:50,290 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:50,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1754829548, now seen corresponding path program 1 times [2023-12-19 00:03:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068199190] [2023-12-19 00:03:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:03:50,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:50,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068199190] [2023-12-19 00:03:50,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068199190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:50,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:50,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:03:50,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069913838] [2023-12-19 00:03:50,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:03:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:03:50,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:03:50,375 INFO L87 Difference]: Start difference. First operand 5424 states and 8396 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:50,577 INFO L93 Difference]: Finished difference Result 9922 states and 14897 transitions. [2023-12-19 00:03:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:03:50,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-19 00:03:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:50,595 INFO L225 Difference]: With dead ends: 9922 [2023-12-19 00:03:50,596 INFO L226 Difference]: Without dead ends: 8712 [2023-12-19 00:03:50,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:03:50,599 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4669 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:50,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 3308 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-12-19 00:03:50,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 6632. [2023-12-19 00:03:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6630 states have (on average 1.5257918552036198) internal successors, (10116), 6631 states have internal predecessors, (10116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 10116 transitions. [2023-12-19 00:03:50,789 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 10116 transitions. Word has length 61 [2023-12-19 00:03:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:50,790 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 10116 transitions. [2023-12-19 00:03:50,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 10116 transitions. [2023-12-19 00:03:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:03:50,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:50,791 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] [2023-12-19 00:03:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:03:50,791 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:50,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2017906924, now seen corresponding path program 1 times [2023-12-19 00:03:50,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:50,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247561961] [2023-12-19 00:03:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:50,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:03:50,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247561961] [2023-12-19 00:03:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247561961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:03:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273530964] [2023-12-19 00:03:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:03:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:03:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:03:50,886 INFO L87 Difference]: Start difference. First operand 6632 states and 10116 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:51,131 INFO L93 Difference]: Finished difference Result 11130 states and 16617 transitions. [2023-12-19 00:03:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:03:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 61 [2023-12-19 00:03:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:51,147 INFO L225 Difference]: With dead ends: 11130 [2023-12-19 00:03:51,147 INFO L226 Difference]: Without dead ends: 9920 [2023-12-19 00:03:51,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:03:51,152 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4637 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:51,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3350 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:03:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-12-19 00:03:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7840. [2023-12-19 00:03:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.5100791018116866) internal successors, (11836), 7839 states have internal predecessors, (11836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11836 transitions. [2023-12-19 00:03:51,362 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11836 transitions. Word has length 61 [2023-12-19 00:03:51,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:51,362 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11836 transitions. [2023-12-19 00:03:51,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11836 transitions. [2023-12-19 00:03:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 00:03:51,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:51,364 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:03:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:03:51,364 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:51,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1544035826, now seen corresponding path program 1 times [2023-12-19 00:03:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48063969] [2023-12-19 00:03:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:51,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:51,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48063969] [2023-12-19 00:03:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48063969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:51,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041421612] [2023-12-19 00:03:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:51,464 INFO L87 Difference]: Start difference. First operand 7840 states and 11836 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:51,566 INFO L93 Difference]: Finished difference Result 14148 states and 20830 transitions. [2023-12-19 00:03:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:51,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-19 00:03:51,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:51,578 INFO L225 Difference]: With dead ends: 14148 [2023-12-19 00:03:51,578 INFO L226 Difference]: Without dead ends: 7842 [2023-12-19 00:03:51,585 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 [2023-12-19 00:03:51,586 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:51,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2023-12-19 00:03:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7840. [2023-12-19 00:03:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.4942587394743556) internal successors, (11712), 7839 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11712 transitions. [2023-12-19 00:03:51,761 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11712 transitions. Word has length 62 [2023-12-19 00:03:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:51,761 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11712 transitions. [2023-12-19 00:03:51,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11712 transitions. [2023-12-19 00:03:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 00:03:51,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:51,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:03:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:03:51,763 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:51,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1995198044, now seen corresponding path program 1 times [2023-12-19 00:03:51,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:51,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081432652] [2023-12-19 00:03:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:51,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:51,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081432652] [2023-12-19 00:03:51,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081432652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:51,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:51,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601912300] [2023-12-19 00:03:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:51,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:51,823 INFO L87 Difference]: Start difference. First operand 7840 states and 11712 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:51,880 INFO L93 Difference]: Finished difference Result 10236 states and 15119 transitions. [2023-12-19 00:03:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:51,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-19 00:03:51,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:51,885 INFO L225 Difference]: With dead ends: 10236 [2023-12-19 00:03:51,885 INFO L226 Difference]: Without dead ends: 3930 [2023-12-19 00:03:51,891 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 [2023-12-19 00:03:51,891 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:51,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-19 00:03:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-12-19 00:03:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.5809742412649834) internal successors, (6199), 3922 states have internal predecessors, (6199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6199 transitions. [2023-12-19 00:03:51,956 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6199 transitions. Word has length 63 [2023-12-19 00:03:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:51,956 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 6199 transitions. [2023-12-19 00:03:51,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6199 transitions. [2023-12-19 00:03:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 00:03:51,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:51,957 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] [2023-12-19 00:03:51,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:03:51,957 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:51,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1235798528, now seen corresponding path program 1 times [2023-12-19 00:03:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:51,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944322556] [2023-12-19 00:03:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:51,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:52,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:52,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944322556] [2023-12-19 00:03:52,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944322556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:52,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:52,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852566048] [2023-12-19 00:03:52,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:52,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:52,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:52,013 INFO L87 Difference]: Start difference. First operand 3923 states and 6199 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:52,046 INFO L93 Difference]: Finished difference Result 5115 states and 7873 transitions. [2023-12-19 00:03:52,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:52,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-19 00:03:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:52,050 INFO L225 Difference]: With dead ends: 5115 [2023-12-19 00:03:52,051 INFO L226 Difference]: Without dead ends: 2737 [2023-12-19 00:03:52,053 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 [2023-12-19 00:03:52,053 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:52,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-19 00:03:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-12-19 00:03:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.6483717526527626) internal successors, (4505), 2734 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4505 transitions. [2023-12-19 00:03:52,093 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4505 transitions. Word has length 64 [2023-12-19 00:03:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:52,093 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4505 transitions. [2023-12-19 00:03:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4505 transitions. [2023-12-19 00:03:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 00:03:52,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:52,094 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] [2023-12-19 00:03:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:03:52,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:52,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash -940349554, now seen corresponding path program 1 times [2023-12-19 00:03:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066335239] [2023-12-19 00:03:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066335239] [2023-12-19 00:03:52,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066335239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:03:52,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:03:52,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:03:52,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687682050] [2023-12-19 00:03:52,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:03:52,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:03:52,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:52,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:03:52,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:03:52,174 INFO L87 Difference]: Start difference. First operand 2735 states and 4505 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:52,206 INFO L93 Difference]: Finished difference Result 3333 states and 5332 transitions. [2023-12-19 00:03:52,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:03:52,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-19 00:03:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:52,210 INFO L225 Difference]: With dead ends: 3333 [2023-12-19 00:03:52,210 INFO L226 Difference]: Without dead ends: 2143 [2023-12-19 00:03:52,212 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 [2023-12-19 00:03:52,212 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:52,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:03:52,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-12-19 00:03:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-12-19 00:03:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.7152875175315567) internal successors, (3669), 2140 states have internal predecessors, (3669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3669 transitions. [2023-12-19 00:03:52,247 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3669 transitions. Word has length 66 [2023-12-19 00:03:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:52,248 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3669 transitions. [2023-12-19 00:03:52,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3669 transitions. [2023-12-19 00:03:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 00:03:52,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:52,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:03:52,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:03:52,249 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:52,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:52,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1534169756, now seen corresponding path program 1 times [2023-12-19 00:03:52,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:52,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664056998] [2023-12-19 00:03:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:52,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:53,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:53,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664056998] [2023-12-19 00:03:53,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664056998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:03:53,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925631451] [2023-12-19 00:03:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:53,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:03:53,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:03:53,480 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) [2023-12-19 00:03:53,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:03:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:53,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:03:53,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:03:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:03:53,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:03:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:03:53,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925631451] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:03:53,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:03:53,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:03:53,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250267959] [2023-12-19 00:03:53,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:03:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:03:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:03:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:03:53,906 INFO L87 Difference]: Start difference. First operand 2141 states and 3669 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:03:55,845 INFO L93 Difference]: Finished difference Result 6296 states and 9162 transitions. [2023-12-19 00:03:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 00:03:55,846 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 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 68 [2023-12-19 00:03:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:03:55,852 INFO L225 Difference]: With dead ends: 6296 [2023-12-19 00:03:55,852 INFO L226 Difference]: Without dead ends: 5700 [2023-12-19 00:03:55,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:03:55,855 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 14683 mSDsluCounter, 6247 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14683 SdHoareTripleChecker+Valid, 7749 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:03:55,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14683 Valid, 7749 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:03:55,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-12-19 00:03:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-12-19 00:03:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5370 states have (on average 1.45195530726257) internal successors, (7797), 5371 states have internal predecessors, (7797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7797 transitions. [2023-12-19 00:03:55,957 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7797 transitions. Word has length 68 [2023-12-19 00:03:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:03:55,957 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7797 transitions. [2023-12-19 00:03:55,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:03:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7797 transitions. [2023-12-19 00:03:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-19 00:03:55,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:03:55,958 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] [2023-12-19 00:03:55,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 00:03:56,162 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 [2023-12-19 00:03:56,164 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:03:56,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:03:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash -353967630, now seen corresponding path program 1 times [2023-12-19 00:03:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:03:56,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059156264] [2023-12-19 00:03:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:03:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:58,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:03:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059156264] [2023-12-19 00:03:58,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059156264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:03:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601899210] [2023-12-19 00:03:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:03:58,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:03:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:03:58,105 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) [2023-12-19 00:03:58,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:03:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:03:58,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 00:03:58,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:03:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:58,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:03:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:03:59,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601899210] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:03:59,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:03:59,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 00:03:59,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991880313] [2023-12-19 00:03:59,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:03:59,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 00:03:59,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:03:59,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 00:03:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-19 00:03:59,188 INFO L87 Difference]: Start difference. First operand 5372 states and 7797 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:00,925 INFO L93 Difference]: Finished difference Result 21318 states and 28359 transitions. [2023-12-19 00:04:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:04:00,926 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-19 00:04:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:00,951 INFO L225 Difference]: With dead ends: 21318 [2023-12-19 00:04:00,951 INFO L226 Difference]: Without dead ends: 17962 [2023-12-19 00:04:00,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=596, Invalid=2710, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 00:04:00,960 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 18804 mSDsluCounter, 7906 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18804 SdHoareTripleChecker+Valid, 9400 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:00,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18804 Valid, 9400 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:04:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17962 states. [2023-12-19 00:04:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17962 to 16590. [2023-12-19 00:04:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16590 states, 16588 states have (on average 1.3386182782734506) internal successors, (22205), 16589 states have internal predecessors, (22205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16590 states to 16590 states and 22205 transitions. [2023-12-19 00:04:01,455 INFO L78 Accepts]: Start accepts. Automaton has 16590 states and 22205 transitions. Word has length 69 [2023-12-19 00:04:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:01,456 INFO L495 AbstractCegarLoop]: Abstraction has 16590 states and 22205 transitions. [2023-12-19 00:04:01,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16590 states and 22205 transitions. [2023-12-19 00:04:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-19 00:04:01,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:01,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:01,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 00:04:01,662 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 [2023-12-19 00:04:01,663 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:01,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1105613760, now seen corresponding path program 1 times [2023-12-19 00:04:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823447530] [2023-12-19 00:04:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:01,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823447530] [2023-12-19 00:04:01,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823447530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:04:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563690644] [2023-12-19 00:04:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:01,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:01,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:04:01,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:04:01,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:04:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:02,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:04:02,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:04:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:02,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:04:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563690644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:04:03,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:04:03,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-19 00:04:03,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918494493] [2023-12-19 00:04:03,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:04:03,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:04:03,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:04:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:04:03,071 INFO L87 Difference]: Start difference. First operand 16590 states and 22205 transitions. Second operand has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:05,764 INFO L93 Difference]: Finished difference Result 55463 states and 71688 transitions. [2023-12-19 00:04:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 00:04:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 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 69 [2023-12-19 00:04:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:05,809 INFO L225 Difference]: With dead ends: 55463 [2023-12-19 00:04:05,809 INFO L226 Difference]: Without dead ends: 41536 [2023-12-19 00:04:05,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:04:05,828 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 23001 mSDsluCounter, 6550 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23001 SdHoareTripleChecker+Valid, 8048 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:05,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23001 Valid, 8048 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:04:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41536 states. [2023-12-19 00:04:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41536 to 22116. [2023-12-19 00:04:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22116 states, 22114 states have (on average 1.297775165053812) internal successors, (28699), 22115 states have internal predecessors, (28699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22116 states to 22116 states and 28699 transitions. [2023-12-19 00:04:06,606 INFO L78 Accepts]: Start accepts. Automaton has 22116 states and 28699 transitions. Word has length 69 [2023-12-19 00:04:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:06,606 INFO L495 AbstractCegarLoop]: Abstraction has 22116 states and 28699 transitions. [2023-12-19 00:04:06,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 22116 states and 28699 transitions. [2023-12-19 00:04:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-19 00:04:06,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:06,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:06,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 00:04:06,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:06,815 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:06,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash 80527306, now seen corresponding path program 1 times [2023-12-19 00:04:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873989300] [2023-12-19 00:04:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:07,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:07,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873989300] [2023-12-19 00:04:07,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873989300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:04:07,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629437449] [2023-12-19 00:04:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:07,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:07,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:04:07,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:04:07,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:04:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:07,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 00:04:07,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:04:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:07,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:04:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:07,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629437449] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:04:07,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:04:07,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-12-19 00:04:07,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411473238] [2023-12-19 00:04:07,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:04:07,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 00:04:07,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:07,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 00:04:07,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-12-19 00:04:07,923 INFO L87 Difference]: Start difference. First operand 22116 states and 28699 transitions. Second operand has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:08,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:08,856 INFO L93 Difference]: Finished difference Result 42393 states and 54248 transitions. [2023-12-19 00:04:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 00:04:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 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 70 [2023-12-19 00:04:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:08,882 INFO L225 Difference]: With dead ends: 42393 [2023-12-19 00:04:08,883 INFO L226 Difference]: Without dead ends: 23878 [2023-12-19 00:04:08,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 00:04:08,901 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 12190 mSDsluCounter, 6145 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12190 SdHoareTripleChecker+Valid, 7657 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:08,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12190 Valid, 7657 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 00:04:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23878 states. [2023-12-19 00:04:09,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23878 to 22440. [2023-12-19 00:04:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22440 states, 22438 states have (on average 1.2856315179606026) internal successors, (28847), 22439 states have internal predecessors, (28847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22440 states to 22440 states and 28847 transitions. [2023-12-19 00:04:09,585 INFO L78 Accepts]: Start accepts. Automaton has 22440 states and 28847 transitions. Word has length 70 [2023-12-19 00:04:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:09,585 INFO L495 AbstractCegarLoop]: Abstraction has 22440 states and 28847 transitions. [2023-12-19 00:04:09,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 22440 states and 28847 transitions. [2023-12-19 00:04:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 00:04:09,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:09,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:09,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 00:04:09,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:09,793 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:09,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:09,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1901852944, now seen corresponding path program 1 times [2023-12-19 00:04:09,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:09,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61926835] [2023-12-19 00:04:09,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:09,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:11,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:11,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61926835] [2023-12-19 00:04:11,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61926835] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:04:11,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102268495] [2023-12-19 00:04:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:11,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:11,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:04:11,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:04:11,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:04:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:11,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 00:04:11,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:04:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:14,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:04:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102268495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:04:17,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:04:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 19] total 61 [2023-12-19 00:04:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776388827] [2023-12-19 00:04:17,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:04:17,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-19 00:04:17,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:17,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-19 00:04:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:04:17,034 INFO L87 Difference]: Start difference. First operand 22440 states and 28847 transitions. Second operand has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:06:16,034 INFO L93 Difference]: Finished difference Result 79430 states and 98665 transitions. [2023-12-19 00:06:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-12-19 00:06:16,034 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 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 [2023-12-19 00:06:16,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:06:16,100 INFO L225 Difference]: With dead ends: 79430 [2023-12-19 00:06:16,101 INFO L226 Difference]: Without dead ends: 68003 [2023-12-19 00:06:16,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 484 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105628 ImplicationChecksByTransitivity, 111.1s TimeCoverageRelationStatistics Valid=32146, Invalid=203564, Unknown=0, NotChecked=0, Total=235710 [2023-12-19 00:06:16,126 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 24556 mSDsluCounter, 31596 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24556 SdHoareTripleChecker+Valid, 33206 SdHoareTripleChecker+Invalid, 7692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:06:16,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24556 Valid, 33206 Invalid, 7692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [256 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-19 00:06:16,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68003 states. [2023-12-19 00:06:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68003 to 38499. [2023-12-19 00:06:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38499 states, 38497 states have (on average 1.2629295789282282) internal successors, (48619), 38498 states have internal predecessors, (48619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38499 states to 38499 states and 48619 transitions. [2023-12-19 00:06:18,177 INFO L78 Accepts]: Start accepts. Automaton has 38499 states and 48619 transitions. Word has length 71 [2023-12-19 00:06:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:06:18,177 INFO L495 AbstractCegarLoop]: Abstraction has 38499 states and 48619 transitions. [2023-12-19 00:06:18,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 38499 states and 48619 transitions. [2023-12-19 00:06:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 00:06:18,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:06:18,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:06:18,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 00:06:18,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 00:06:18,380 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:06:18,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:06:18,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1828365840, now seen corresponding path program 1 times [2023-12-19 00:06:18,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:06:18,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927540363] [2023-12-19 00:06:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:18,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:06:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:19,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:06:19,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927540363] [2023-12-19 00:06:19,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927540363] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:06:19,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312523399] [2023-12-19 00:06:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:19,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:19,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:06:19,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:06:19,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:06:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:19,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 00:06:19,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:06:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:20,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:06:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:21,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312523399] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:06:21,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:06:21,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 16] total 53 [2023-12-19 00:06:21,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396919885] [2023-12-19 00:06:21,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:06:21,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:06:21,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:06:21,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:06:21,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2553, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:06:21,678 INFO L87 Difference]: Start difference. First operand 38499 states and 48619 transitions. Second operand has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:06:42,067 INFO L93 Difference]: Finished difference Result 88449 states and 110779 transitions. [2023-12-19 00:06:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-19 00:06:42,067 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 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 [2023-12-19 00:06:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:06:42,139 INFO L225 Difference]: With dead ends: 88449 [2023-12-19 00:06:42,139 INFO L226 Difference]: Without dead ends: 69601 [2023-12-19 00:06:42,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11056 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=7356, Invalid=28176, Unknown=0, NotChecked=0, Total=35532 [2023-12-19 00:06:42,150 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 30848 mSDsluCounter, 27342 mSDsCounter, 0 mSdLazyCounter, 3832 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30848 SdHoareTripleChecker+Valid, 28911 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:06:42,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30848 Valid, 28911 Invalid, 4023 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 3832 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 00:06:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69601 states. [2023-12-19 00:06:43,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69601 to 32995. [2023-12-19 00:06:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32995 states, 32993 states have (on average 1.266662625405389) internal successors, (41791), 32994 states have internal predecessors, (41791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32995 states to 32995 states and 41791 transitions. [2023-12-19 00:06:43,980 INFO L78 Accepts]: Start accepts. Automaton has 32995 states and 41791 transitions. Word has length 71 [2023-12-19 00:06:43,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:06:43,980 INFO L495 AbstractCegarLoop]: Abstraction has 32995 states and 41791 transitions. [2023-12-19 00:06:43,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 32995 states and 41791 transitions. [2023-12-19 00:06:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:06:43,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:06:43,981 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] [2023-12-19 00:06:43,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 00:06:44,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:44,196 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:06:44,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:06:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1039608506, now seen corresponding path program 1 times [2023-12-19 00:06:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:06:44,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382261714] [2023-12-19 00:06:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:06:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:44,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:06:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382261714] [2023-12-19 00:06:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382261714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:06:44,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319995692] [2023-12-19 00:06:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:44,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:44,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:06:44,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:06:44,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:06:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:44,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 00:06:44,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:06:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:45,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:06:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:48,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319995692] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:06:48,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:06:48,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 41 [2023-12-19 00:06:48,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848471408] [2023-12-19 00:06:48,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:06:48,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-19 00:06:48,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:06:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-19 00:06:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 00:06:48,036 INFO L87 Difference]: Start difference. First operand 32995 states and 41791 transitions. Second operand has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:06:54,747 INFO L93 Difference]: Finished difference Result 44731 states and 56112 transitions. [2023-12-19 00:06:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 00:06:54,748 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:06:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:06:54,773 INFO L225 Difference]: With dead ends: 44731 [2023-12-19 00:06:54,773 INFO L226 Difference]: Without dead ends: 30698 [2023-12-19 00:06:54,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2102, Invalid=6828, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 00:06:54,779 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 17512 mSDsluCounter, 16490 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17512 SdHoareTripleChecker+Valid, 17999 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:06:54,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17512 Valid, 17999 Invalid, 1022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:06:54,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30698 states. [2023-12-19 00:06:56,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30698 to 27534. [2023-12-19 00:06:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27534 states, 27532 states have (on average 1.2701946825512132) internal successors, (34971), 27533 states have internal predecessors, (34971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27534 states to 27534 states and 34971 transitions. [2023-12-19 00:06:56,280 INFO L78 Accepts]: Start accepts. Automaton has 27534 states and 34971 transitions. Word has length 73 [2023-12-19 00:06:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:06:56,281 INFO L495 AbstractCegarLoop]: Abstraction has 27534 states and 34971 transitions. [2023-12-19 00:06:56,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 27534 states and 34971 transitions. [2023-12-19 00:06:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 00:06:56,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:06:56,284 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:06:56,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 00:06:56,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:56,486 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:06:56,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:06:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash 775315466, now seen corresponding path program 1 times [2023-12-19 00:06:56,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:06:56,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882936006] [2023-12-19 00:06:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:56,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:06:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:56,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:06:56,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882936006] [2023-12-19 00:06:56,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882936006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:06:56,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617984750] [2023-12-19 00:06:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:56,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:56,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:06:56,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:06:56,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:06:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:57,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:06:57,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:06:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:57,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:06:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:59,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617984750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:06:59,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:06:59,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-19 00:06:59,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883256698] [2023-12-19 00:06:59,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:06:59,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 00:06:59,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:06:59,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 00:06:59,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 00:06:59,440 INFO L87 Difference]: Start difference. First operand 27534 states and 34971 transitions. Second operand has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:07:08,692 INFO L93 Difference]: Finished difference Result 64842 states and 80701 transitions. [2023-12-19 00:07:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-19 00:07:08,692 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 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 114 [2023-12-19 00:07:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:07:08,735 INFO L225 Difference]: With dead ends: 64842 [2023-12-19 00:07:08,736 INFO L226 Difference]: Without dead ends: 46820 [2023-12-19 00:07:08,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5331 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2807, Invalid=15825, Unknown=0, NotChecked=0, Total=18632 [2023-12-19 00:07:08,743 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 14292 mSDsluCounter, 18693 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14292 SdHoareTripleChecker+Valid, 20216 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:07:08,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14292 Valid, 20216 Invalid, 1954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 00:07:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46820 states. [2023-12-19 00:07:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46820 to 33705. [2023-12-19 00:07:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2467436133281904) internal successors, (42019), 33704 states have internal predecessors, (42019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 42019 transitions. [2023-12-19 00:07:10,927 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 42019 transitions. Word has length 114 [2023-12-19 00:07:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:07:10,927 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 42019 transitions. [2023-12-19 00:07:10,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 42019 transitions. [2023-12-19 00:07:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 00:07:10,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:07:10,931 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:07:10,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 00:07:11,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 00:07:11,138 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:07:11,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:07:11,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1524897256, now seen corresponding path program 1 times [2023-12-19 00:07:11,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:07:11,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258309707] [2023-12-19 00:07:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:11,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:07:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:11,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:07:11,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258309707] [2023-12-19 00:07:11,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258309707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:07:11,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111152475] [2023-12-19 00:07:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:11,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:11,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:07:11,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:07:11,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:07:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:12,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:07:12,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:07:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:12,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:07:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:14,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111152475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:07:14,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:07:14,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-19 00:07:14,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279230143] [2023-12-19 00:07:14,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:07:14,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:07:14,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:07:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:07:14,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:07:14,405 INFO L87 Difference]: Start difference. First operand 33705 states and 42019 transitions. Second operand has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:07:18,651 INFO L93 Difference]: Finished difference Result 59146 states and 72974 transitions. [2023-12-19 00:07:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:07:18,652 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 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 115 [2023-12-19 00:07:18,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:07:18,692 INFO L225 Difference]: With dead ends: 59146 [2023-12-19 00:07:18,693 INFO L226 Difference]: Without dead ends: 40606 [2023-12-19 00:07:18,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=859, Invalid=3047, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 00:07:18,705 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 21103 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21103 SdHoareTripleChecker+Valid, 13838 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:07:18,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21103 Valid, 13838 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:07:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40606 states. [2023-12-19 00:07:20,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40606 to 33705. [2023-12-19 00:07:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2382873928136962) internal successors, (41734), 33704 states have internal predecessors, (41734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 41734 transitions. [2023-12-19 00:07:20,962 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 41734 transitions. Word has length 115 [2023-12-19 00:07:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:07:20,962 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 41734 transitions. [2023-12-19 00:07:20,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 41734 transitions. [2023-12-19 00:07:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 00:07:20,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:07:20,966 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:07:20,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 00:07:21,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:07:21,168 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:07:21,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:07:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1002870552, now seen corresponding path program 1 times [2023-12-19 00:07:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:07:21,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574632703] [2023-12-19 00:07:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:21,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:07:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:21,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:07:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574632703] [2023-12-19 00:07:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574632703] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:07:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572679815] [2023-12-19 00:07:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:21,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:21,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:07:21,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:07:21,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:07:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:21,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:07:21,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:07:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:22,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:07:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:23,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572679815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:07:23,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:07:23,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-19 00:07:23,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471757066] [2023-12-19 00:07:23,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:07:23,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 00:07:23,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:07:23,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 00:07:23,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-19 00:07:23,913 INFO L87 Difference]: Start difference. First operand 33705 states and 41734 transitions. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:07:26,916 INFO L93 Difference]: Finished difference Result 52982 states and 65377 transitions. [2023-12-19 00:07:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 00:07:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 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 115 [2023-12-19 00:07:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:07:26,953 INFO L225 Difference]: With dead ends: 52982 [2023-12-19 00:07:26,954 INFO L226 Difference]: Without dead ends: 38136 [2023-12-19 00:07:26,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 00:07:26,965 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 13596 mSDsluCounter, 9284 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13596 SdHoareTripleChecker+Valid, 10799 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:07:26,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13596 Valid, 10799 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:07:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38136 states. [2023-12-19 00:07:29,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38136 to 33705. [2023-12-19 00:07:29,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2308103136219328) internal successors, (41482), 33704 states have internal predecessors, (41482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 41482 transitions. [2023-12-19 00:07:29,355 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 41482 transitions. Word has length 115 [2023-12-19 00:07:29,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:07:29,355 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 41482 transitions. [2023-12-19 00:07:29,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 41482 transitions. [2023-12-19 00:07:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:07:29,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:07:29,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:07:29,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 00:07:29,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 00:07:29,563 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:07:29,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:07:29,563 INFO L85 PathProgramCache]: Analyzing trace with hash 110129570, now seen corresponding path program 1 times [2023-12-19 00:07:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:07:29,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895628789] [2023-12-19 00:07:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:29,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:07:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:07:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895628789] [2023-12-19 00:07:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895628789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:07:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010052450] [2023-12-19 00:07:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:30,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:30,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:07:30,807 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:07:30,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:07:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:30,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 00:07:30,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:07:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:32,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:07:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:34,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010052450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:07:34,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:07:34,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 57 [2023-12-19 00:07:34,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549075122] [2023-12-19 00:07:34,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:07:34,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 00:07:34,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:07:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 00:07:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 00:07:34,966 INFO L87 Difference]: Start difference. First operand 33705 states and 41482 transitions. Second operand has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:15,966 INFO L93 Difference]: Finished difference Result 74623 states and 90401 transitions. [2023-12-19 00:08:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-12-19 00:08:15,967 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 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 116 [2023-12-19 00:08:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:08:16,032 INFO L225 Difference]: With dead ends: 74623 [2023-12-19 00:08:16,032 INFO L226 Difference]: Without dead ends: 66955 [2023-12-19 00:08:16,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23428 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=8348, Invalid=59512, Unknown=0, NotChecked=0, Total=67860 [2023-12-19 00:08:16,044 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 23262 mSDsluCounter, 34829 mSDsCounter, 0 mSdLazyCounter, 4969 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23262 SdHoareTripleChecker+Valid, 36472 SdHoareTripleChecker+Invalid, 5295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 4969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:08:16,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23262 Valid, 36472 Invalid, 5295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [326 Valid, 4969 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-19 00:08:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66955 states. [2023-12-19 00:08:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66955 to 39172. [2023-12-19 00:08:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39172 states, 39170 states have (on average 1.222976767934644) internal successors, (47904), 39171 states have internal predecessors, (47904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39172 states to 39172 states and 47904 transitions. [2023-12-19 00:08:19,233 INFO L78 Accepts]: Start accepts. Automaton has 39172 states and 47904 transitions. Word has length 116 [2023-12-19 00:08:19,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:08:19,233 INFO L495 AbstractCegarLoop]: Abstraction has 39172 states and 47904 transitions. [2023-12-19 00:08:19,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 39172 states and 47904 transitions. [2023-12-19 00:08:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:08:19,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:08:19,238 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:08:19,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 00:08:19,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:19,443 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:08:19,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:08:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1631714690, now seen corresponding path program 1 times [2023-12-19 00:08:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:08:19,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556647519] [2023-12-19 00:08:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:08:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:20,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:08:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556647519] [2023-12-19 00:08:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556647519] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:08:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294543177] [2023-12-19 00:08:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:20,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:20,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:08:20,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:08:20,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:08:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:20,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 00:08:20,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:08:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:22,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:08:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294543177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:08:25,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:08:25,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 21] total 62 [2023-12-19 00:08:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619749224] [2023-12-19 00:08:25,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:08:25,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-19 00:08:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:08:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-19 00:08:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3412, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 00:08:25,824 INFO L87 Difference]: Start difference. First operand 39172 states and 47904 transitions. Second operand has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:09:30,687 INFO L93 Difference]: Finished difference Result 93806 states and 112349 transitions. [2023-12-19 00:09:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 446 states. [2023-12-19 00:09:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 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 116 [2023-12-19 00:09:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:09:30,765 INFO L225 Difference]: With dead ends: 93806 [2023-12-19 00:09:30,766 INFO L226 Difference]: Without dead ends: 83097 [2023-12-19 00:09:30,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101927 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=23255, Invalid=232275, Unknown=0, NotChecked=0, Total=255530 [2023-12-19 00:09:30,783 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 19125 mSDsluCounter, 40829 mSDsCounter, 0 mSdLazyCounter, 10185 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19125 SdHoareTripleChecker+Valid, 42570 SdHoareTripleChecker+Invalid, 10446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 10185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:09:30,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19125 Valid, 42570 Invalid, 10446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 10185 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 00:09:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83097 states. [2023-12-19 00:09:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83097 to 42501. [2023-12-19 00:09:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42501 states, 42499 states have (on average 1.2196051671804042) internal successors, (51832), 42500 states have internal predecessors, (51832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42501 states to 42501 states and 51832 transitions. [2023-12-19 00:09:34,798 INFO L78 Accepts]: Start accepts. Automaton has 42501 states and 51832 transitions. Word has length 116 [2023-12-19 00:09:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:09:34,799 INFO L495 AbstractCegarLoop]: Abstraction has 42501 states and 51832 transitions. [2023-12-19 00:09:34,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 42501 states and 51832 transitions. [2023-12-19 00:09:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:09:34,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:09:34,801 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:09:34,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:09:35,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:09:35,003 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:09:35,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:09:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash -321400638, now seen corresponding path program 1 times [2023-12-19 00:09:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:09:35,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402345003] [2023-12-19 00:09:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:35,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:09:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 00:09:35,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:09:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402345003] [2023-12-19 00:09:35,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402345003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:09:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340199656] [2023-12-19 00:09:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:35,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:09:35,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:09:35,571 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:09:35,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 00:09:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:35,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:09:35,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:09:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:36,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:09:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340199656] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:09:37,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:09:37,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 37 [2023-12-19 00:09:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739328174] [2023-12-19 00:09:37,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:09:37,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-19 00:09:37,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:09:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-19 00:09:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 00:09:37,645 INFO L87 Difference]: Start difference. First operand 42501 states and 51832 transitions. Second operand has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:46,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:09:46,070 INFO L93 Difference]: Finished difference Result 77358 states and 93793 transitions. [2023-12-19 00:09:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 00:09:46,071 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 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 116 [2023-12-19 00:09:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:09:46,117 INFO L225 Difference]: With dead ends: 77358 [2023-12-19 00:09:46,117 INFO L226 Difference]: Without dead ends: 48818 [2023-12-19 00:09:46,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1819, Invalid=6371, Unknown=0, NotChecked=0, Total=8190 [2023-12-19 00:09:46,126 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 11429 mSDsluCounter, 17592 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11429 SdHoareTripleChecker+Valid, 19128 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:09:46,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11429 Valid, 19128 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 00:09:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48818 states. [2023-12-19 00:09:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48818 to 42369. [2023-12-19 00:09:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42369 states, 42367 states have (on average 1.21913281563481) internal successors, (51651), 42368 states have internal predecessors, (51651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42369 states to 42369 states and 51651 transitions. [2023-12-19 00:09:50,166 INFO L78 Accepts]: Start accepts. Automaton has 42369 states and 51651 transitions. Word has length 116 [2023-12-19 00:09:50,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:09:50,167 INFO L495 AbstractCegarLoop]: Abstraction has 42369 states and 51651 transitions. [2023-12-19 00:09:50,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 42369 states and 51651 transitions. [2023-12-19 00:09:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:09:50,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:09:50,169 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:09:50,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 00:09:50,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-19 00:09:50,371 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:09:50,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:09:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -676106210, now seen corresponding path program 1 times [2023-12-19 00:09:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:09:50,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724831928] [2023-12-19 00:09:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:50,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:09:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:51,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:09:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724831928] [2023-12-19 00:09:51,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724831928] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:09:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831752522] [2023-12-19 00:09:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:51,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:09:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:09:51,449 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:09:51,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 00:09:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:51,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 00:09:51,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:09:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:52,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:09:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831752522] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:09:55,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:09:55,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 57 [2023-12-19 00:09:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415207809] [2023-12-19 00:09:55,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:09:55,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 00:09:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:09:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 00:09:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2952, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 00:09:55,479 INFO L87 Difference]: Start difference. First operand 42369 states and 51651 transitions. Second operand has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:10:38,287 INFO L93 Difference]: Finished difference Result 111846 states and 134152 transitions. [2023-12-19 00:10:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-19 00:10:38,287 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 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 116 [2023-12-19 00:10:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:10:38,362 INFO L225 Difference]: With dead ends: 111846 [2023-12-19 00:10:38,362 INFO L226 Difference]: Without dead ends: 86312 [2023-12-19 00:10:38,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20770 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=8850, Invalid=52406, Unknown=0, NotChecked=0, Total=61256 [2023-12-19 00:10:38,373 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 26569 mSDsluCounter, 25598 mSDsCounter, 0 mSdLazyCounter, 4633 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26569 SdHoareTripleChecker+Valid, 27246 SdHoareTripleChecker+Invalid, 4984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:10:38,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26569 Valid, 27246 Invalid, 4984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [351 Valid, 4633 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 00:10:38,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86312 states. [2023-12-19 00:10:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86312 to 47753. [2023-12-19 00:10:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47753 states, 47751 states have (on average 1.2154091013800759) internal successors, (58037), 47752 states have internal predecessors, (58037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47753 states to 47753 states and 58037 transitions. [2023-12-19 00:10:44,129 INFO L78 Accepts]: Start accepts. Automaton has 47753 states and 58037 transitions. Word has length 116 [2023-12-19 00:10:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:10:44,129 INFO L495 AbstractCegarLoop]: Abstraction has 47753 states and 58037 transitions. [2023-12-19 00:10:44,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 47753 states and 58037 transitions. [2023-12-19 00:10:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 00:10:44,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:10:44,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:10:44,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 00:10:44,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:10:44,380 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:10:44,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:10:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1491845734, now seen corresponding path program 1 times [2023-12-19 00:10:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:10:44,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504870717] [2023-12-19 00:10:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:10:44,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:10:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:10:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:46,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:10:46,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504870717] [2023-12-19 00:10:46,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504870717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:10:46,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699214022] [2023-12-19 00:10:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:10:46,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:10:46,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:10:46,133 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:10:46,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 00:10:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:10:46,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-19 00:10:46,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:10:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:52,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:00,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699214022] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:00,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:00,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 33] total 96 [2023-12-19 00:11:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542208053] [2023-12-19 00:11:00,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:00,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-19 00:11:00,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-19 00:11:00,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=8317, Unknown=0, NotChecked=0, Total=9120 [2023-12-19 00:11:00,326 INFO L87 Difference]: Start difference. First operand 47753 states and 58037 transitions. Second operand has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 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) [2023-12-19 00:15:49,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:15:49,985 INFO L93 Difference]: Finished difference Result 80875 states and 96933 transitions. [2023-12-19 00:15:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 522 states. [2023-12-19 00:15:49,986 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 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 117 [2023-12-19 00:15:49,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:15:50,059 INFO L225 Difference]: With dead ends: 80875 [2023-12-19 00:15:50,059 INFO L226 Difference]: Without dead ends: 70565 [2023-12-19 00:15:50,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150726 ImplicationChecksByTransitivity, 274.2s TimeCoverageRelationStatistics Valid=27450, Invalid=340392, Unknown=0, NotChecked=0, Total=367842 [2023-12-19 00:15:50,080 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 45880 mSDsluCounter, 42388 mSDsCounter, 0 mSdLazyCounter, 11364 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45880 SdHoareTripleChecker+Valid, 44104 SdHoareTripleChecker+Invalid, 11772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 11364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:15:50,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45880 Valid, 44104 Invalid, 11772 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [408 Valid, 11364 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-12-19 00:15:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70565 states. [2023-12-19 00:15:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70565 to 50874. [2023-12-19 00:15:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50874 states, 50872 states have (on average 1.21284793206479) internal successors, (61700), 50873 states have internal predecessors, (61700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50874 states to 50874 states and 61700 transitions. [2023-12-19 00:15:56,511 INFO L78 Accepts]: Start accepts. Automaton has 50874 states and 61700 transitions. Word has length 117 [2023-12-19 00:15:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:15:56,512 INFO L495 AbstractCegarLoop]: Abstraction has 50874 states and 61700 transitions. [2023-12-19 00:15:56,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 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) [2023-12-19 00:15:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 50874 states and 61700 transitions. [2023-12-19 00:15:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 00:15:56,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:15:56,514 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:15:56,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 00:15:56,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:15:56,715 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:15:56,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:15:56,715 INFO L85 PathProgramCache]: Analyzing trace with hash -45544542, now seen corresponding path program 1 times [2023-12-19 00:15:56,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:15:56,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536474649] [2023-12-19 00:15:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:15:56,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:15:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:15:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:15:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:15:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536474649] [2023-12-19 00:15:57,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536474649] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:15:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872868326] [2023-12-19 00:15:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:15:57,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:15:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:15:57,776 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:15:57,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 00:15:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:15:57,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-19 00:15:57,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:02,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872868326] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:07,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:07,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30, 30] total 81 [2023-12-19 00:16:07,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285757816] [2023-12-19 00:16:07,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:07,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-19 00:16:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:07,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-19 00:16:07,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=5880, Unknown=0, NotChecked=0, Total=6480 [2023-12-19 00:16:07,890 INFO L87 Difference]: Start difference. First operand 50874 states and 61700 transitions. Second operand has 81 states, 81 states have (on average 4.111111111111111) internal successors, (333), 81 states have internal predecessors, (333), 0 states have call successors, (0), 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... [2023-12-19 00:17:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2023-12-19 00:17:15,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15420 ImplicationChecksByTransitivity, 66.2s TimeCoverageRelationStatistics Valid=6315, Invalid=44085, Unknown=0, NotChecked=0, Total=50400 [2023-12-19 00:17:15,901 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 4543 mSDsluCounter, 5345 mSDsCounter, 0 mSdLazyCounter, 4106 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4543 SdHoareTripleChecker+Valid, 5543 SdHoareTripleChecker+Invalid, 4363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:15,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4543 Valid, 5543 Invalid, 4363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 4106 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-19 00:17:15,902 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:17:15,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 00:17:15,930 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 [2023-12-19 00:17:15,930 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:17:16,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 00:17:16,108 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (50874states) and FLOYD_HOARE automaton (currently 157 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-30-9-4-4-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-19 00:17:16,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:17:16,112 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:17:16,114 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:17:16,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:17:16 BoogieIcfgContainer [2023-12-19 00:17:16,116 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:17:16,116 INFO L158 Benchmark]: Toolchain (without parser) took 817785.86ms. Allocated memory was 174.1MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 116.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-19 00:17:16,116 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory was 75.2MB in the beginning and 75.1MB in the end (delta: 66.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:17:16,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1468.14ms. Allocated memory was 174.1MB in the beginning and 215.0MB in the end (delta: 40.9MB). Free memory was 115.9MB in the beginning and 112.0MB in the end (delta: 3.9MB). Peak memory consumption was 65.8MB. Max. memory is 8.0GB. [2023-12-19 00:17:16,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 391.42ms. Allocated memory is still 215.0MB. Free memory was 112.0MB in the beginning and 115.7MB in the end (delta: -3.7MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. [2023-12-19 00:17:16,117 INFO L158 Benchmark]: Boogie Preprocessor took 520.67ms. Allocated memory was 215.0MB in the beginning and 411.0MB in the end (delta: 196.1MB). Free memory was 115.7MB in the beginning and 289.7MB in the end (delta: -174.1MB). Peak memory consumption was 51.9MB. Max. memory is 8.0GB. [2023-12-19 00:17:16,117 INFO L158 Benchmark]: RCFGBuilder took 3563.68ms. Allocated memory was 411.0MB in the beginning and 632.3MB in the end (delta: 221.2MB). Free memory was 289.2MB in the beginning and 356.6MB in the end (delta: -67.4MB). Peak memory consumption was 164.4MB. Max. memory is 8.0GB. [2023-12-19 00:17:16,117 INFO L158 Benchmark]: TraceAbstraction took 811834.90ms. Allocated memory was 632.3MB in the beginning and 3.0GB in the end (delta: 2.4GB). Free memory was 355.5MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-19 00:17:16,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory was 75.2MB in the beginning and 75.1MB in the end (delta: 66.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1468.14ms. Allocated memory was 174.1MB in the beginning and 215.0MB in the end (delta: 40.9MB). Free memory was 115.9MB in the beginning and 112.0MB in the end (delta: 3.9MB). Peak memory consumption was 65.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 391.42ms. Allocated memory is still 215.0MB. Free memory was 112.0MB in the beginning and 115.7MB in the end (delta: -3.7MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 520.67ms. Allocated memory was 215.0MB in the beginning and 411.0MB in the end (delta: 196.1MB). Free memory was 115.7MB in the beginning and 289.7MB in the end (delta: -174.1MB). Peak memory consumption was 51.9MB. Max. memory is 8.0GB. * RCFGBuilder took 3563.68ms. Allocated memory was 411.0MB in the beginning and 632.3MB in the end (delta: 221.2MB). Free memory was 289.2MB in the beginning and 356.6MB in the end (delta: -67.4MB). Peak memory consumption was 164.4MB. Max. memory is 8.0GB. * TraceAbstraction took 811834.90ms. Allocated memory was 632.3MB in the beginning and 3.0GB in the end (delta: 2.4GB). Free memory was 355.5MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. 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: 363]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 363). Cancelled while NwaCegarLoop was constructing difference of abstraction (50874states) and FLOYD_HOARE automaton (currently 157 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-30-9-4-4-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 522]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 522). Cancelled while NwaCegarLoop was constructing difference of abstraction (50874states) and FLOYD_HOARE automaton (currently 157 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-30-9-4-4-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 811.8s, OverallIterations: 35, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 690.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 356121 SdHoareTripleChecker+Valid, 49.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356121 mSDsluCounter, 381033 SdHoareTripleChecker+Invalid, 44.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 329367 mSDsCounter, 3520 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58224 IncrementalHoareTripleChecker+Invalid, 61744 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3520 mSolverCounterUnsat, 51666 mSDtfsCounter, 58224 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5868 GetRequests, 2674 SyntacticMatches, 2 SemanticMatches, 3191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442776 ImplicationChecksByTransitivity, 606.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50874occurred in iteration=34, InterpolantAutomatonStates: 2410, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 38.9s AutomataMinimizationTime, 34 MinimizatonAttempts, 258692 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 76.3s InterpolantComputationTime, 4001 NumberOfCodeBlocks, 4001 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 5467 ConstructedInterpolants, 0 QuantifiedInterpolants, 127691 SizeOfPredicates, 147 NumberOfNonLiveVariables, 7061 ConjunctsInSsa, 448 ConjunctsInUnsatCore, 67 InterpolantComputations, 19 PerfectInterpolantSequences, 1023/3014 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