/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.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 23:34:39,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 23:34:39,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 23:34:39,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 23:34:39,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 23:34:39,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 23:34:39,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 23:34:39,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 23:34:39,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 23:34:39,227 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 23:34:39,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 23:34:39,227 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 23:34:39,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 23:34:39,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 23:34:39,229 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 23:34:39,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 23:34:39,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 23:34:39,230 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 23:34:39,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 23:34:39,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 23:34:39,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 23:34:39,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 23:34:39,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 23:34:39,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 23:34:39,232 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 23:34:39,232 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 23:34:39,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 23:34:39,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 23:34:39,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 23:34:39,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 23:34:39,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 23:34:39,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 23:34:39,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:34:39,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 23:34:39,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 23:34:39,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 23:34:39,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 23:34:39,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 23:34:39,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 23:34:39,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 23:34:39,236 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 23:34:39,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 23:34:39,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 23:34:39,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 23:34:39,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 23:34:39,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 23:34:39,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 23:34:39,475 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 23:34:39,475 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 23:34:39,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2023-12-18 23:34:40,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 23:34:40,986 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 23:34:40,987 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2023-12-18 23:34:41,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b82ea9c/9fc0af4ac33e40c8b7ca7af9b9b0f27f/FLAG0f31521ae [2023-12-18 23:34:41,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b82ea9c/9fc0af4ac33e40c8b7ca7af9b9b0f27f [2023-12-18 23:34:41,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 23:34:41,036 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 23:34:41,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 23:34:41,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 23:34:41,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 23:34:41,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:34:41" (1/1) ... [2023-12-18 23:34:41,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9e5066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:41, skipping insertion in model container [2023-12-18 23:34:41,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:34:41" (1/1) ... [2023-12-18 23:34:41,148 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 23:34:41,451 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.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[8653,8666] [2023-12-18 23:34:41,494 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.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[14208,14221] [2023-12-18 23:34:42,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:34:42,131 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 23:34:42,167 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.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[8653,8666] [2023-12-18 23:34:42,176 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.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[14208,14221] [2023-12-18 23:34:42,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:34:42,608 INFO L206 MainTranslator]: Completed translation [2023-12-18 23:34:42,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42 WrapperNode [2023-12-18 23:34:42,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 23:34:42,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 23:34:42,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 23:34:42,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 23:34:42,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:42,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:42,955 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5036 [2023-12-18 23:34:42,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 23:34:42,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 23:34:42,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 23:34:42,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 23:34:42,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:42,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,092 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,203 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]. [2023-12-18 23:34:43,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 23:34:43,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 23:34:43,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 23:34:43,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 23:34:43,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (1/1) ... [2023-12-18 23:34:43,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:34:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:34:43,517 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) [2023-12-18 23:34:43,542 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 [2023-12-18 23:34:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 23:34:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 23:34:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 23:34:43,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 23:34:43,650 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 23:34:43,651 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 23:34:47,323 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 23:34:47,378 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 23:34:47,378 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 23:34:47,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:34:47 BoogieIcfgContainer [2023-12-18 23:34:47,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 23:34:47,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 23:34:47,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 23:34:47,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 23:34:47,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:34:41" (1/3) ... [2023-12-18 23:34:47,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153858be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:34:47, skipping insertion in model container [2023-12-18 23:34:47,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:34:42" (2/3) ... [2023-12-18 23:34:47,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153858be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:34:47, skipping insertion in model container [2023-12-18 23:34:47,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:34:47" (3/3) ... [2023-12-18 23:34:47,384 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2023-12-18 23:34:47,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 23:34:47,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 23:34:47,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 23:34:47,470 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;@7355958a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 23:34:47,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 23:34:47,478 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) [2023-12-18 23:34:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-18 23:34:47,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:47,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:34:47,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:47,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash -70611561, now seen corresponding path program 1 times [2023-12-18 23:34:47,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:47,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012835559] [2023-12-18 23:34:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:47,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:47,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:47,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012835559] [2023-12-18 23:34:47,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012835559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:47,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:47,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:34:47,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810101656] [2023-12-18 23:34:47,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:47,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 23:34:47,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 23:34:47,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:34:47,755 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) [2023-12-18 23:34:47,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:47,851 INFO L93 Difference]: Finished difference Result 1613 states and 3180 transitions. [2023-12-18 23:34:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 23:34:47,856 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 [2023-12-18 23:34:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:47,875 INFO L225 Difference]: With dead ends: 1613 [2023-12-18 23:34:47,875 INFO L226 Difference]: Without dead ends: 816 [2023-12-18 23:34:47,882 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 [2023-12-18 23:34:47,886 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:34:47,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:34:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-18 23:34:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-18 23:34:47,970 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) [2023-12-18 23:34:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-18 23:34:47,976 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-18 23:34:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:47,976 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-18 23:34:47,977 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) [2023-12-18 23:34:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-18 23:34:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-18 23:34:47,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:47,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:34:47,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 23:34:47,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:47,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:47,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1350475239, now seen corresponding path program 1 times [2023-12-18 23:34:47,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:47,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279969267] [2023-12-18 23:34:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:47,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279969267] [2023-12-18 23:34:48,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279969267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:48,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:48,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:34:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671451617] [2023-12-18 23:34:48,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:48,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:34:48,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:34:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:34:48,166 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) [2023-12-18 23:34:48,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:48,243 INFO L93 Difference]: Finished difference Result 889 states and 1660 transitions. [2023-12-18 23:34:48,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:34:48,244 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 [2023-12-18 23:34:48,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:48,247 INFO L225 Difference]: With dead ends: 889 [2023-12-18 23:34:48,247 INFO L226 Difference]: Without dead ends: 851 [2023-12-18 23:34:48,248 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 [2023-12-18 23:34:48,249 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:34:48,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:34:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-18 23:34:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 816. [2023-12-18 23:34:48,269 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) [2023-12-18 23:34:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-18 23:34:48,272 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-18 23:34:48,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:48,273 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-18 23:34:48,273 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) [2023-12-18 23:34:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-18 23:34:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-18 23:34:48,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:48,277 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] [2023-12-18 23:34:48,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 23:34:48,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:48,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1073198252, now seen corresponding path program 1 times [2023-12-18 23:34:48,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:48,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032537055] [2023-12-18 23:34:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:48,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:48,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032537055] [2023-12-18 23:34:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032537055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:48,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:48,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:34:48,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277725298] [2023-12-18 23:34:48,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:48,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:34:48,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:48,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:34:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:34:48,426 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) [2023-12-18 23:34:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:48,610 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-12-18 23:34:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-18 23:34:48,611 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 [2023-12-18 23:34:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:48,615 INFO L225 Difference]: With dead ends: 1096 [2023-12-18 23:34:48,616 INFO L226 Difference]: Without dead ends: 1061 [2023-12-18 23:34:48,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-18 23:34:48,620 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 [2023-12-18 23:34:48,621 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] [2023-12-18 23:34:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-12-18 23:34:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-12-18 23:34:48,671 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) [2023-12-18 23:34:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-12-18 23:34:48,674 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-12-18 23:34:48,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:48,674 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-12-18 23:34:48,674 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) [2023-12-18 23:34:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-12-18 23:34:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-18 23:34:48,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:48,676 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] [2023-12-18 23:34:48,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 23:34:48,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:48,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:48,677 INFO L85 PathProgramCache]: Analyzing trace with hash -674057308, now seen corresponding path program 1 times [2023-12-18 23:34:48,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:48,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067692437] [2023-12-18 23:34:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:48,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:48,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:48,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067692437] [2023-12-18 23:34:48,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067692437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:48,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:48,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185067617] [2023-12-18 23:34:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:48,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:48,729 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) [2023-12-18 23:34:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:48,758 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-12-18 23:34:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:48,759 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 [2023-12-18 23:34:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:48,763 INFO L225 Difference]: With dead ends: 974 [2023-12-18 23:34:48,763 INFO L226 Difference]: Without dead ends: 906 [2023-12-18 23:34:48,763 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 [2023-12-18 23:34:48,769 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 [2023-12-18 23:34:48,770 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] [2023-12-18 23:34:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-18 23:34:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-18 23:34:48,786 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) [2023-12-18 23:34:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-12-18 23:34:48,789 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-12-18 23:34:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:48,790 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-12-18 23:34:48,790 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) [2023-12-18 23:34:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-12-18 23:34:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-18 23:34:48,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:48,793 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] [2023-12-18 23:34:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 23:34:48,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:48,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash -671912356, now seen corresponding path program 1 times [2023-12-18 23:34:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500774919] [2023-12-18 23:34:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:49,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:49,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500774919] [2023-12-18 23:34:49,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500774919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:49,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:49,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:34:49,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770159225] [2023-12-18 23:34:49,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:49,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:34:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:49,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:34:49,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:34:49,015 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) [2023-12-18 23:34:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:49,136 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-12-18 23:34:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:34:49,136 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 [2023-12-18 23:34:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:49,140 INFO L225 Difference]: With dead ends: 1029 [2023-12-18 23:34:49,140 INFO L226 Difference]: Without dead ends: 906 [2023-12-18 23:34:49,142 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 [2023-12-18 23:34:49,143 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 4440 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:34:49,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 1669 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:34:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-18 23:34:49,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-18 23:34:49,160 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) [2023-12-18 23:34:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-12-18 23:34:49,163 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-12-18 23:34:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:49,164 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-12-18 23:34:49,165 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) [2023-12-18 23:34:49,165 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-12-18 23:34:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-18 23:34:49,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:49,166 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] [2023-12-18 23:34:49,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 23:34:49,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:49,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash 517198681, now seen corresponding path program 1 times [2023-12-18 23:34:49,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:49,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213964865] [2023-12-18 23:34:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:49,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:49,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:49,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213964865] [2023-12-18 23:34:49,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213964865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:49,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:49,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:34:49,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976174781] [2023-12-18 23:34:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:49,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:34:49,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:49,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:34:49,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:34:49,332 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) [2023-12-18 23:34:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:49,370 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-12-18 23:34:49,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:34:49,371 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 [2023-12-18 23:34:49,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:49,375 INFO L225 Difference]: With dead ends: 912 [2023-12-18 23:34:49,375 INFO L226 Difference]: Without dead ends: 910 [2023-12-18 23:34:49,375 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 [2023-12-18 23:34:49,376 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 [2023-12-18 23:34:49,377 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] [2023-12-18 23:34:49,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-18 23:34:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-18 23:34:49,400 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) [2023-12-18 23:34:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-12-18 23:34:49,404 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-12-18 23:34:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:49,405 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-12-18 23:34:49,405 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) [2023-12-18 23:34:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-12-18 23:34:49,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:34:49,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:49,406 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] [2023-12-18 23:34:49,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 23:34:49,406 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:49,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1806912796, now seen corresponding path program 1 times [2023-12-18 23:34:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:49,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672299280] [2023-12-18 23:34:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:49,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672299280] [2023-12-18 23:34:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672299280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:49,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:49,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:49,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67088887] [2023-12-18 23:34:49,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:49,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:49,467 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) [2023-12-18 23:34:49,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:49,504 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-12-18 23:34:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:49,504 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 [2023-12-18 23:34:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:49,508 INFO L225 Difference]: With dead ends: 1046 [2023-12-18 23:34:49,508 INFO L226 Difference]: Without dead ends: 974 [2023-12-18 23:34:49,508 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 [2023-12-18 23:34:49,509 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 [2023-12-18 23:34:49,509 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] [2023-12-18 23:34:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-18 23:34:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-12-18 23:34:49,528 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) [2023-12-18 23:34:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-12-18 23:34:49,531 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-12-18 23:34:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:49,532 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-12-18 23:34:49,532 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) [2023-12-18 23:34:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-12-18 23:34:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:34:49,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:49,533 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] [2023-12-18 23:34:49,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 23:34:49,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:49,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:49,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1221200668, now seen corresponding path program 1 times [2023-12-18 23:34:49,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:49,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914623653] [2023-12-18 23:34:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:49,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:49,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:49,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914623653] [2023-12-18 23:34:49,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914623653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:49,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:49,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:49,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365862688] [2023-12-18 23:34:49,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:49,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:49,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:49,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:49,604 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) [2023-12-18 23:34:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:49,633 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-12-18 23:34:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:49,634 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 [2023-12-18 23:34:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:49,638 INFO L225 Difference]: With dead ends: 1326 [2023-12-18 23:34:49,638 INFO L226 Difference]: Without dead ends: 1137 [2023-12-18 23:34:49,639 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 [2023-12-18 23:34:49,640 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 [2023-12-18 23:34:49,640 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] [2023-12-18 23:34:49,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-18 23:34:49,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-12-18 23:34:49,661 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) [2023-12-18 23:34:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-12-18 23:34:49,666 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-12-18 23:34:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:49,666 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-12-18 23:34:49,666 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) [2023-12-18 23:34:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-12-18 23:34:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:34:49,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:49,667 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] [2023-12-18 23:34:49,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 23:34:49,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:49,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2109934108, now seen corresponding path program 1 times [2023-12-18 23:34:49,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:49,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309509721] [2023-12-18 23:34:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:49,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309509721] [2023-12-18 23:34:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309509721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:49,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:49,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475840167] [2023-12-18 23:34:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:49,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:49,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:49,719 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) [2023-12-18 23:34:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:49,753 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-12-18 23:34:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:49,754 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 [2023-12-18 23:34:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:49,760 INFO L225 Difference]: With dead ends: 1791 [2023-12-18 23:34:49,761 INFO L226 Difference]: Without dead ends: 1439 [2023-12-18 23:34:49,762 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 [2023-12-18 23:34:49,764 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 [2023-12-18 23:34:49,764 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] [2023-12-18 23:34:49,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-12-18 23:34:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-12-18 23:34:49,790 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) [2023-12-18 23:34:49,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-12-18 23:34:49,794 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-12-18 23:34:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:49,795 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-12-18 23:34:49,795 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) [2023-12-18 23:34:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-12-18 23:34:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:34:49,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:49,796 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] [2023-12-18 23:34:49,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 23:34:49,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:49,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:49,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1846856732, now seen corresponding path program 1 times [2023-12-18 23:34:49,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:49,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068816235] [2023-12-18 23:34:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:49,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:49,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:49,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068816235] [2023-12-18 23:34:49,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068816235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:49,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:49,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691870146] [2023-12-18 23:34:49,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:49,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:49,837 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) [2023-12-18 23:34:49,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:49,909 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-12-18 23:34:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:49,910 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 [2023-12-18 23:34:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:49,916 INFO L225 Difference]: With dead ends: 2649 [2023-12-18 23:34:49,916 INFO L226 Difference]: Without dead ends: 1995 [2023-12-18 23:34:49,917 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 [2023-12-18 23:34:49,918 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 [2023-12-18 23:34:49,919 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] [2023-12-18 23:34:49,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-18 23:34:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-12-18 23:34:49,966 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) [2023-12-18 23:34:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-12-18 23:34:49,972 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-12-18 23:34:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:49,972 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-12-18 23:34:49,972 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) [2023-12-18 23:34:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-12-18 23:34:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-18 23:34:49,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:49,973 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] [2023-12-18 23:34:49,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 23:34:49,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:49,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2145314009, now seen corresponding path program 1 times [2023-12-18 23:34:49,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:49,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713721338] [2023-12-18 23:34:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:50,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:50,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713721338] [2023-12-18 23:34:50,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713721338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:50,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:50,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:34:50,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065804496] [2023-12-18 23:34:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:50,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:50,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:50,032 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) [2023-12-18 23:34:53,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:53,298 INFO L93 Difference]: Finished difference Result 3497 states and 6086 transitions. [2023-12-18 23:34:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:53,300 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 [2023-12-18 23:34:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:53,311 INFO L225 Difference]: With dead ends: 3497 [2023-12-18 23:34:53,311 INFO L226 Difference]: Without dead ends: 2744 [2023-12-18 23:34:53,312 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 [2023-12-18 23:34:53,312 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 851 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:34:53,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 157 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-18 23:34:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2023-12-18 23:34:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2744. [2023-12-18 23:34:53,365 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) [2023-12-18 23:34:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4588 transitions. [2023-12-18 23:34:53,370 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4588 transitions. Word has length 47 [2023-12-18 23:34:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:53,370 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4588 transitions. [2023-12-18 23:34:53,370 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) [2023-12-18 23:34:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4588 transitions. [2023-12-18 23:34:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:34:53,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:53,371 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] [2023-12-18 23:34:53,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 23:34:53,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:53,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:53,372 INFO L85 PathProgramCache]: Analyzing trace with hash 695639445, now seen corresponding path program 1 times [2023-12-18 23:34:53,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:53,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552874336] [2023-12-18 23:34:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:53,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:34:53,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:53,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552874336] [2023-12-18 23:34:53,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552874336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:34:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10441405] [2023-12-18 23:34:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:53,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:34:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:34:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:34:53,462 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) [2023-12-18 23:34:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:53,637 INFO L93 Difference]: Finished difference Result 7506 states and 11449 transitions. [2023-12-18 23:34:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:34:53,637 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 [2023-12-18 23:34:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:53,659 INFO L225 Difference]: With dead ends: 7506 [2023-12-18 23:34:53,659 INFO L226 Difference]: Without dead ends: 6640 [2023-12-18 23:34:53,662 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 [2023-12-18 23:34:53,663 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4635 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:34:53,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 3299 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:34:53,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2023-12-18 23:34:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3784. [2023-12-18 23:34:53,762 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) [2023-12-18 23:34:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 6068 transitions. [2023-12-18 23:34:53,769 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 6068 transitions. Word has length 61 [2023-12-18 23:34:53,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:53,770 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 6068 transitions. [2023-12-18 23:34:53,770 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) [2023-12-18 23:34:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 6068 transitions. [2023-12-18 23:34:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:34:53,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:53,771 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] [2023-12-18 23:34:53,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 23:34:53,771 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:53,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash 109927317, now seen corresponding path program 1 times [2023-12-18 23:34:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318123711] [2023-12-18 23:34:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 23:34:53,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:53,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318123711] [2023-12-18 23:34:53,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318123711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:53,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:53,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:34:53,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822283501] [2023-12-18 23:34:53,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:53,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:34:53,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:34:53,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:34:53,883 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) [2023-12-18 23:34:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:54,069 INFO L93 Difference]: Finished difference Result 8714 states and 13177 transitions. [2023-12-18 23:34:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:34:54,069 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 [2023-12-18 23:34:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:54,101 INFO L225 Difference]: With dead ends: 8714 [2023-12-18 23:34:54,101 INFO L226 Difference]: Without dead ends: 7504 [2023-12-18 23:34:54,105 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 [2023-12-18 23:34:54,106 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 [2023-12-18 23:34:54,106 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] [2023-12-18 23:34:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2023-12-18 23:34:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 5424. [2023-12-18 23:34:54,261 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) [2023-12-18 23:34:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8396 transitions. [2023-12-18 23:34:54,272 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8396 transitions. Word has length 61 [2023-12-18 23:34:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:54,272 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8396 transitions. [2023-12-18 23:34:54,273 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) [2023-12-18 23:34:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8396 transitions. [2023-12-18 23:34:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:34:54,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:54,274 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] [2023-12-18 23:34:54,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 23:34:54,274 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:54,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:54,275 INFO L85 PathProgramCache]: Analyzing trace with hash 998660757, now seen corresponding path program 1 times [2023-12-18 23:34:54,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:54,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504889377] [2023-12-18 23:34:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:54,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-18 23:34:54,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504889377] [2023-12-18 23:34:54,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504889377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:54,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:54,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:34:54,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636654571] [2023-12-18 23:34:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:54,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:34:54,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:34:54,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:34:54,375 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) [2023-12-18 23:34:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:54,616 INFO L93 Difference]: Finished difference Result 9922 states and 14897 transitions. [2023-12-18 23:34:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:34:54,616 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 [2023-12-18 23:34:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:54,630 INFO L225 Difference]: With dead ends: 9922 [2023-12-18 23:34:54,630 INFO L226 Difference]: Without dead ends: 8712 [2023-12-18 23:34:54,633 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 [2023-12-18 23:34:54,634 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:34:54,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 3308 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:34:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-12-18 23:34:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 6632. [2023-12-18 23:34:54,796 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) [2023-12-18 23:34:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 10116 transitions. [2023-12-18 23:34:54,806 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 10116 transitions. Word has length 61 [2023-12-18 23:34:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:54,806 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 10116 transitions. [2023-12-18 23:34:54,806 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) [2023-12-18 23:34:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 10116 transitions. [2023-12-18 23:34:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:34:54,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:54,807 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] [2023-12-18 23:34:54,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 23:34:54,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:54,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash 735583381, now seen corresponding path program 1 times [2023-12-18 23:34:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:54,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390497546] [2023-12-18 23:34:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:54,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 23:34:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390497546] [2023-12-18 23:34:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390497546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:54,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:34:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389608543] [2023-12-18 23:34:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:54,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:34:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:34:54,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:34:54,919 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) [2023-12-18 23:34:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:55,173 INFO L93 Difference]: Finished difference Result 11130 states and 16617 transitions. [2023-12-18 23:34:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:34:55,174 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 [2023-12-18 23:34:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:55,189 INFO L225 Difference]: With dead ends: 11130 [2023-12-18 23:34:55,189 INFO L226 Difference]: Without dead ends: 9920 [2023-12-18 23:34:55,193 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 [2023-12-18 23:34:55,194 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 [2023-12-18 23:34:55,194 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] [2023-12-18 23:34:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-12-18 23:34:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7840. [2023-12-18 23:34:55,372 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) [2023-12-18 23:34:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11836 transitions. [2023-12-18 23:34:55,383 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11836 transitions. Word has length 61 [2023-12-18 23:34:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:55,384 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11836 transitions. [2023-12-18 23:34:55,384 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) [2023-12-18 23:34:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11836 transitions. [2023-12-18 23:34:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-18 23:34:55,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:55,389 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] [2023-12-18 23:34:55,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 23:34:55,389 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:55,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1002918191, now seen corresponding path program 1 times [2023-12-18 23:34:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:55,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201196158] [2023-12-18 23:34:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:55,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:55,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201196158] [2023-12-18 23:34:55,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201196158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:55,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451552795] [2023-12-18 23:34:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:55,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:55,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:55,509 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) [2023-12-18 23:34:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:55,644 INFO L93 Difference]: Finished difference Result 14148 states and 20830 transitions. [2023-12-18 23:34:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:55,644 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 [2023-12-18 23:34:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:55,655 INFO L225 Difference]: With dead ends: 14148 [2023-12-18 23:34:55,655 INFO L226 Difference]: Without dead ends: 7842 [2023-12-18 23:34:55,662 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 [2023-12-18 23:34:55,663 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 [2023-12-18 23:34:55,663 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] [2023-12-18 23:34:55,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2023-12-18 23:34:55,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7840. [2023-12-18 23:34:55,827 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) [2023-12-18 23:34:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11712 transitions. [2023-12-18 23:34:55,838 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11712 transitions. Word has length 62 [2023-12-18 23:34:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:55,838 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11712 transitions. [2023-12-18 23:34:55,839 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) [2023-12-18 23:34:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11712 transitions. [2023-12-18 23:34:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 23:34:55,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:55,840 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] [2023-12-18 23:34:55,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 23:34:55,840 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:55,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1894517923, now seen corresponding path program 1 times [2023-12-18 23:34:55,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:55,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488752679] [2023-12-18 23:34:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:55,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:55,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488752679] [2023-12-18 23:34:55,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488752679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:55,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:55,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:55,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226769039] [2023-12-18 23:34:55,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:55,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:55,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:55,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:55,919 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) [2023-12-18 23:34:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:55,991 INFO L93 Difference]: Finished difference Result 10236 states and 15119 transitions. [2023-12-18 23:34:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:55,992 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 [2023-12-18 23:34:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:55,998 INFO L225 Difference]: With dead ends: 10236 [2023-12-18 23:34:55,998 INFO L226 Difference]: Without dead ends: 3930 [2023-12-18 23:34:56,004 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 [2023-12-18 23:34:56,006 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 [2023-12-18 23:34:56,006 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] [2023-12-18 23:34:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-18 23:34:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-12-18 23:34:56,077 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) [2023-12-18 23:34:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6199 transitions. [2023-12-18 23:34:56,082 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6199 transitions. Word has length 63 [2023-12-18 23:34:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:56,083 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 6199 transitions. [2023-12-18 23:34:56,083 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) [2023-12-18 23:34:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6199 transitions. [2023-12-18 23:34:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-18 23:34:56,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:56,084 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] [2023-12-18 23:34:56,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 23:34:56,084 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:56,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1557880387, now seen corresponding path program 1 times [2023-12-18 23:34:56,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:56,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560176643] [2023-12-18 23:34:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:56,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:56,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560176643] [2023-12-18 23:34:56,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560176643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:56,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:56,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:56,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951045452] [2023-12-18 23:34:56,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:56,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:56,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:56,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:56,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:56,153 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) [2023-12-18 23:34:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:56,198 INFO L93 Difference]: Finished difference Result 5115 states and 7873 transitions. [2023-12-18 23:34:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:56,198 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 [2023-12-18 23:34:56,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:56,202 INFO L225 Difference]: With dead ends: 5115 [2023-12-18 23:34:56,202 INFO L226 Difference]: Without dead ends: 2737 [2023-12-18 23:34:56,205 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 [2023-12-18 23:34:56,206 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 [2023-12-18 23:34:56,206 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] [2023-12-18 23:34:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-18 23:34:56,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-12-18 23:34:56,252 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) [2023-12-18 23:34:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4505 transitions. [2023-12-18 23:34:56,255 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4505 transitions. Word has length 64 [2023-12-18 23:34:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:56,256 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4505 transitions. [2023-12-18 23:34:56,256 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) [2023-12-18 23:34:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4505 transitions. [2023-12-18 23:34:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-18 23:34:56,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:56,257 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] [2023-12-18 23:34:56,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-18 23:34:56,257 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:56,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1222448181, now seen corresponding path program 1 times [2023-12-18 23:34:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:56,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806465022] [2023-12-18 23:34:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:56,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:56,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:56,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806465022] [2023-12-18 23:34:56,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806465022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:34:56,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:34:56,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:34:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990052567] [2023-12-18 23:34:56,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:34:56,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:34:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:34:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:34:56,332 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) [2023-12-18 23:34:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:34:56,365 INFO L93 Difference]: Finished difference Result 3333 states and 5332 transitions. [2023-12-18 23:34:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:34:56,365 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 [2023-12-18 23:34:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:34:56,369 INFO L225 Difference]: With dead ends: 3333 [2023-12-18 23:34:56,369 INFO L226 Difference]: Without dead ends: 2143 [2023-12-18 23:34:56,370 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 [2023-12-18 23:34:56,371 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 [2023-12-18 23:34:56,371 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] [2023-12-18 23:34:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-12-18 23:34:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-12-18 23:34:56,400 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) [2023-12-18 23:34:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3669 transitions. [2023-12-18 23:34:56,402 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3669 transitions. Word has length 66 [2023-12-18 23:34:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:34:56,403 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3669 transitions. [2023-12-18 23:34:56,403 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) [2023-12-18 23:34:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3669 transitions. [2023-12-18 23:34:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-18 23:34:56,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:34:56,404 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] [2023-12-18 23:34:56,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-18 23:34:56,404 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:34:56,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:34:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1021251417, now seen corresponding path program 1 times [2023-12-18 23:34:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:34:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794280690] [2023-12-18 23:34:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:56,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:34:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:34:57,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:34:57,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794280690] [2023-12-18 23:34:57,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794280690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:34:57,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832364694] [2023-12-18 23:34:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:34:57,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:34:57,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:34:57,917 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) [2023-12-18 23:34:57,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 23:34:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:34:58,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 23:34:58,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:34:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:34:58,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:34:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:34:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832364694] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:34:58,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:34:58,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-18 23:34:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986297509] [2023-12-18 23:34:58,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:34:58,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 23:34:58,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:34:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 23:34:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-18 23:34:58,505 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) [2023-12-18 23:35:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:00,830 INFO L93 Difference]: Finished difference Result 6128 states and 8966 transitions. [2023-12-18 23:35:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-18 23:35:00,831 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 [2023-12-18 23:35:00,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:00,838 INFO L225 Difference]: With dead ends: 6128 [2023-12-18 23:35:00,839 INFO L226 Difference]: Without dead ends: 5532 [2023-12-18 23:35:00,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 23:35:00,842 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 16113 mSDsluCounter, 6241 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16113 SdHoareTripleChecker+Valid, 7743 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:00,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16113 Valid, 7743 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:35:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2023-12-18 23:35:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5260. [2023-12-18 23:35:00,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5258 states have (on average 1.4562571319893496) internal successors, (7657), 5259 states have internal predecessors, (7657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7657 transitions. [2023-12-18 23:35:00,975 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7657 transitions. Word has length 68 [2023-12-18 23:35:00,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:35:00,975 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7657 transitions. [2023-12-18 23:35:00,975 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) [2023-12-18 23:35:00,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7657 transitions. [2023-12-18 23:35:00,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-18 23:35:00,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:35:00,976 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] [2023-12-18 23:35:00,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 23:35:01,183 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 [2023-12-18 23:35:01,184 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:35:01,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:35:01,184 INFO L85 PathProgramCache]: Analyzing trace with hash 925461875, now seen corresponding path program 1 times [2023-12-18 23:35:01,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:35:01,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575124849] [2023-12-18 23:35:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:01,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:35:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:35:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575124849] [2023-12-18 23:35:02,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575124849] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:35:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104806590] [2023-12-18 23:35:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:02,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:35:02,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:35:02,779 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) [2023-12-18 23:35:02,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 23:35:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:02,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:35:02,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:35:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:03,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:35:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:04,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104806590] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:35:04,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:35:04,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-18 23:35:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064406639] [2023-12-18 23:35:04,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:35:04,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-18 23:35:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:35:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-18 23:35:04,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 23:35:04,300 INFO L87 Difference]: Start difference. First operand 5260 states and 7657 transitions. Second operand has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:07,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:07,381 INFO L93 Difference]: Finished difference Result 18259 states and 24381 transitions. [2023-12-18 23:35:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-18 23:35:07,381 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 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 [2023-12-18 23:35:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:07,405 INFO L225 Difference]: With dead ends: 18259 [2023-12-18 23:35:07,405 INFO L226 Difference]: Without dead ends: 14677 [2023-12-18 23:35:07,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1203, Invalid=5277, Unknown=0, NotChecked=0, Total=6480 [2023-12-18 23:35:07,419 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 23091 mSDsluCounter, 7974 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23091 SdHoareTripleChecker+Valid, 9472 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:07,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23091 Valid, 9472 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 23:35:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14677 states. [2023-12-18 23:35:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14677 to 13391. [2023-12-18 23:35:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13391 states, 13389 states have (on average 1.341847785495556) internal successors, (17966), 13390 states have internal predecessors, (17966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 17966 transitions. [2023-12-18 23:35:07,831 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 17966 transitions. Word has length 69 [2023-12-18 23:35:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:35:07,832 INFO L495 AbstractCegarLoop]: Abstraction has 13391 states and 17966 transitions. [2023-12-18 23:35:07,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 17966 transitions. [2023-12-18 23:35:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-18 23:35:07,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:35:07,833 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] [2023-12-18 23:35:07,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 23:35:08,038 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 [2023-12-18 23:35:08,039 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:35:08,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:35:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash 604914881, now seen corresponding path program 1 times [2023-12-18 23:35:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:35:08,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941540323] [2023-12-18 23:35:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:35:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:35:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941540323] [2023-12-18 23:35:08,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941540323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:35:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675257628] [2023-12-18 23:35:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:08,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:35:08,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:35:08,325 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) [2023-12-18 23:35:08,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 23:35:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:08,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:35:08,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:35:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:08,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:35:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675257628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:35:09,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:35:09,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-18 23:35:09,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617872722] [2023-12-18 23:35:09,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:35:09,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 23:35:09,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:35:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 23:35:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-18 23:35:09,693 INFO L87 Difference]: Start difference. First operand 13391 states and 17966 transitions. Second operand has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 29 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:10,560 INFO L93 Difference]: Finished difference Result 22256 states and 29263 transitions. [2023-12-18 23:35:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 23:35:10,564 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 29 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-18 23:35:10,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:10,615 INFO L225 Difference]: With dead ends: 22256 [2023-12-18 23:35:10,615 INFO L226 Difference]: Without dead ends: 14667 [2023-12-18 23:35:10,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 23:35:10,641 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 14948 mSDsluCounter, 6270 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14948 SdHoareTripleChecker+Valid, 7768 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:10,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14948 Valid, 7768 Invalid, 531 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:35:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2023-12-18 23:35:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 13711. [2023-12-18 23:35:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13711 states, 13709 states have (on average 1.3324093661098548) internal successors, (18266), 13710 states have internal predecessors, (18266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13711 states to 13711 states and 18266 transitions. [2023-12-18 23:35:11,230 INFO L78 Accepts]: Start accepts. Automaton has 13711 states and 18266 transitions. Word has length 69 [2023-12-18 23:35:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:35:11,232 INFO L495 AbstractCegarLoop]: Abstraction has 13711 states and 18266 transitions. [2023-12-18 23:35:11,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 29 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:11,232 INFO L276 IsEmpty]: Start isEmpty. Operand 13711 states and 18266 transitions. [2023-12-18 23:35:11,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-18 23:35:11,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:35:11,236 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] [2023-12-18 23:35:11,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-18 23:35:11,444 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 [2023-12-18 23:35:11,445 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:35:11,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:35:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -68633449, now seen corresponding path program 1 times [2023-12-18 23:35:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:35:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001206038] [2023-12-18 23:35:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:11,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:35:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:12,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:35:12,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001206038] [2023-12-18 23:35:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001206038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:35:12,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351164189] [2023-12-18 23:35:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:12,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:35:12,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:35:12,145 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) [2023-12-18 23:35:12,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 23:35:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:12,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:35:12,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:35:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:12,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:35:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351164189] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:35:13,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:35:13,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2023-12-18 23:35:13,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900599855] [2023-12-18 23:35:13,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:35:13,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-18 23:35:13,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:35:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-18 23:35:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-12-18 23:35:13,458 INFO L87 Difference]: Start difference. First operand 13711 states and 18266 transitions. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 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) [2023-12-18 23:35:16,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:16,267 INFO L93 Difference]: Finished difference Result 29512 states and 38004 transitions. [2023-12-18 23:35:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-18 23:35:16,268 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 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 70 [2023-12-18 23:35:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:16,286 INFO L225 Difference]: With dead ends: 29512 [2023-12-18 23:35:16,286 INFO L226 Difference]: Without dead ends: 18073 [2023-12-18 23:35:16,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1692 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1092, Invalid=5228, Unknown=0, NotChecked=0, Total=6320 [2023-12-18 23:35:16,301 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 12680 mSDsluCounter, 13726 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12680 SdHoareTripleChecker+Valid, 15217 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:16,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12680 Valid, 15217 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 23:35:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18073 states. [2023-12-18 23:35:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18073 to 14800. [2023-12-18 23:35:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14800 states, 14798 states have (on average 1.3233545073658604) internal successors, (19583), 14799 states have internal predecessors, (19583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14800 states to 14800 states and 19583 transitions. [2023-12-18 23:35:16,702 INFO L78 Accepts]: Start accepts. Automaton has 14800 states and 19583 transitions. Word has length 70 [2023-12-18 23:35:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:35:16,702 INFO L495 AbstractCegarLoop]: Abstraction has 14800 states and 19583 transitions. [2023-12-18 23:35:16,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 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) [2023-12-18 23:35:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 14800 states and 19583 transitions. [2023-12-18 23:35:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-18 23:35:16,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:35:16,703 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] [2023-12-18 23:35:16,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-18 23:35:16,908 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 [2023-12-18 23:35:16,908 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:35:16,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:35:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1734544719, now seen corresponding path program 1 times [2023-12-18 23:35:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:35:16,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727340710] [2023-12-18 23:35:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:35:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:35:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727340710] [2023-12-18 23:35:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727340710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:35:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916701025] [2023-12-18 23:35:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:17,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:35:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:35:17,286 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) [2023-12-18 23:35:17,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 23:35:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:17,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-18 23:35:17,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:35:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:18,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:35:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:19,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916701025] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:35:19,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:35:19,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-18 23:35:19,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726816943] [2023-12-18 23:35:19,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:35:19,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-18 23:35:19,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:35:19,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-18 23:35:19,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-12-18 23:35:19,198 INFO L87 Difference]: Start difference. First operand 14800 states and 19583 transitions. Second operand has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:22,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:22,590 INFO L93 Difference]: Finished difference Result 32097 states and 40966 transitions. [2023-12-18 23:35:22,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-18 23:35:22,591 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 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 [2023-12-18 23:35:22,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:22,605 INFO L225 Difference]: With dead ends: 32097 [2023-12-18 23:35:22,606 INFO L226 Difference]: Without dead ends: 19892 [2023-12-18 23:35:22,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=962, Invalid=3868, Unknown=0, NotChecked=0, Total=4830 [2023-12-18 23:35:22,613 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 16017 mSDsluCounter, 14020 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16017 SdHoareTripleChecker+Valid, 15534 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:22,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16017 Valid, 15534 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 23:35:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19892 states. [2023-12-18 23:35:23,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19892 to 15774. [2023-12-18 23:35:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15772 states have (on average 1.3089018513821964) internal successors, (20644), 15773 states have internal predecessors, (20644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 20644 transitions. [2023-12-18 23:35:23,113 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 20644 transitions. Word has length 70 [2023-12-18 23:35:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:35:23,113 INFO L495 AbstractCegarLoop]: Abstraction has 15774 states and 20644 transitions. [2023-12-18 23:35:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 20644 transitions. [2023-12-18 23:35:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 23:35:23,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:35:23,114 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] [2023-12-18 23:35:23,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 23:35:23,314 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 [2023-12-18 23:35:23,314 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:35:23,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:35:23,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1693314635, now seen corresponding path program 1 times [2023-12-18 23:35:23,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:35:23,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966747701] [2023-12-18 23:35:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:35:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:23,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:35:23,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966747701] [2023-12-18 23:35:23,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966747701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:35:23,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307704990] [2023-12-18 23:35:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:23,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:35:23,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:35:23,780 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) [2023-12-18 23:35:23,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 23:35:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:23,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-18 23:35:23,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:35:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:25,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:35:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:27,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307704990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:35:27,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:35:27,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2023-12-18 23:35:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723564334] [2023-12-18 23:35:27,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:35:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-18 23:35:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:35:27,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-18 23:35:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 23:35:27,019 INFO L87 Difference]: Start difference. First operand 15774 states and 20644 transitions. Second operand has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:33,482 INFO L93 Difference]: Finished difference Result 40613 states and 51741 transitions. [2023-12-18 23:35:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-18 23:35:33,482 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-18 23:35:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:33,512 INFO L225 Difference]: With dead ends: 40613 [2023-12-18 23:35:33,512 INFO L226 Difference]: Without dead ends: 34667 [2023-12-18 23:35:33,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3059 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1852, Invalid=9068, Unknown=0, NotChecked=0, Total=10920 [2023-12-18 23:35:33,524 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 22566 mSDsluCounter, 13778 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22566 SdHoareTripleChecker+Valid, 15278 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:33,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22566 Valid, 15278 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 23:35:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34667 states. [2023-12-18 23:35:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34667 to 15020. [2023-12-18 23:35:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15020 states, 15018 states have (on average 1.3140897589559195) internal successors, (19735), 15019 states have internal predecessors, (19735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15020 states to 15020 states and 19735 transitions. [2023-12-18 23:35:34,265 INFO L78 Accepts]: Start accepts. Automaton has 15020 states and 19735 transitions. Word has length 71 [2023-12-18 23:35:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:35:34,265 INFO L495 AbstractCegarLoop]: Abstraction has 15020 states and 19735 transitions. [2023-12-18 23:35:34,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 15020 states and 19735 transitions. [2023-12-18 23:35:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 23:35:34,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:35:34,266 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] [2023-12-18 23:35:34,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 23:35:34,472 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 [2023-12-18 23:35:34,472 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:35:34,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:35:34,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2038988407, now seen corresponding path program 1 times [2023-12-18 23:35:34,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:35:34,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814938201] [2023-12-18 23:35:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:34,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:35:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:35:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814938201] [2023-12-18 23:35:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814938201] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:35:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955350052] [2023-12-18 23:35:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:36,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:35:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:35:36,317 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) [2023-12-18 23:35:36,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 23:35:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:36,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:35:36,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:35:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:37,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:35:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:38,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955350052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:35:38,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:35:38,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 47 [2023-12-18 23:35:38,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174892212] [2023-12-18 23:35:38,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:35:38,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-18 23:35:38,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:35:38,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-18 23:35:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2023-12-18 23:35:38,344 INFO L87 Difference]: Start difference. First operand 15020 states and 19735 transitions. Second operand has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:49,302 INFO L93 Difference]: Finished difference Result 35349 states and 44898 transitions. [2023-12-18 23:35:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-18 23:35:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-18 23:35:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:49,327 INFO L225 Difference]: With dead ends: 35349 [2023-12-18 23:35:49,327 INFO L226 Difference]: Without dead ends: 29495 [2023-12-18 23:35:49,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4867 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=3462, Invalid=14360, Unknown=0, NotChecked=0, Total=17822 [2023-12-18 23:35:49,335 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 21933 mSDsluCounter, 23225 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21933 SdHoareTripleChecker+Valid, 24734 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:49,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21933 Valid, 24734 Invalid, 2360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [164 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 23:35:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29495 states. [2023-12-18 23:35:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29495 to 13555. [2023-12-18 23:35:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13555 states, 13553 states have (on average 1.3193388917582822) internal successors, (17881), 13554 states have internal predecessors, (17881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13555 states to 13555 states and 17881 transitions. [2023-12-18 23:35:50,032 INFO L78 Accepts]: Start accepts. Automaton has 13555 states and 17881 transitions. Word has length 72 [2023-12-18 23:35:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:35:50,032 INFO L495 AbstractCegarLoop]: Abstraction has 13555 states and 17881 transitions. [2023-12-18 23:35:50,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 13555 states and 17881 transitions. [2023-12-18 23:35:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-18 23:35:50,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:35:50,035 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] [2023-12-18 23:35:50,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 23:35:50,235 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 [2023-12-18 23:35:50,236 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:35:50,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:35:50,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1248075237, now seen corresponding path program 1 times [2023-12-18 23:35:50,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:35:50,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804114181] [2023-12-18 23:35:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:35:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:50,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:35:50,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804114181] [2023-12-18 23:35:50,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804114181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:35:50,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407827002] [2023-12-18 23:35:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:50,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:35:50,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:35:50,809 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) [2023-12-18 23:35:50,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 23:35:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:50,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:35:50,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:35:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:51,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:35:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407827002] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:35:52,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:35:52,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-18 23:35:52,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604481827] [2023-12-18 23:35:52,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:35:52,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-18 23:35:52,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:35:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-18 23:35:52,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-18 23:35:52,838 INFO L87 Difference]: Start difference. First operand 13555 states and 17881 transitions. Second operand has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:53,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:53,974 INFO L93 Difference]: Finished difference Result 20572 states and 26656 transitions. [2023-12-18 23:35:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 23:35:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 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 113 [2023-12-18 23:35:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:53,987 INFO L225 Difference]: With dead ends: 20572 [2023-12-18 23:35:53,987 INFO L226 Difference]: Without dead ends: 14533 [2023-12-18 23:35:53,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 23:35:53,992 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 13609 mSDsluCounter, 7682 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13609 SdHoareTripleChecker+Valid, 9198 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:53,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13609 Valid, 9198 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:35:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14533 states. [2023-12-18 23:35:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14533 to 13555. [2023-12-18 23:35:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13555 states, 13553 states have (on average 1.3087139378735335) internal successors, (17737), 13554 states have internal predecessors, (17737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13555 states to 13555 states and 17737 transitions. [2023-12-18 23:35:54,615 INFO L78 Accepts]: Start accepts. Automaton has 13555 states and 17737 transitions. Word has length 113 [2023-12-18 23:35:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:35:54,615 INFO L495 AbstractCegarLoop]: Abstraction has 13555 states and 17737 transitions. [2023-12-18 23:35:54,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 13555 states and 17737 transitions. [2023-12-18 23:35:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-18 23:35:54,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:35:54,617 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] [2023-12-18 23:35:54,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 23:35:54,825 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 [2023-12-18 23:35:54,825 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:35:54,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:35:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash 721334043, now seen corresponding path program 1 times [2023-12-18 23:35:54,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:35:54,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979295735] [2023-12-18 23:35:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:54,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:35:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:55,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:35:55,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979295735] [2023-12-18 23:35:55,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979295735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:35:55,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838674847] [2023-12-18 23:35:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:35:55,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:35:55,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:35:55,418 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) [2023-12-18 23:35:55,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 23:35:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:35:55,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:35:55,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:35:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:56,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:35:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:35:57,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838674847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:35:57,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:35:57,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-18 23:35:57,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704080986] [2023-12-18 23:35:57,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:35:57,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-18 23:35:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:35:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-18 23:35:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 23:35:57,851 INFO L87 Difference]: Start difference. First operand 13555 states and 17737 transitions. Second operand has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:36:02,113 INFO L93 Difference]: Finished difference Result 37895 states and 47879 transitions. [2023-12-18 23:36:02,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-18 23:36:02,114 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 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 113 [2023-12-18 23:36:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:36:02,141 INFO L225 Difference]: With dead ends: 37895 [2023-12-18 23:36:02,142 INFO L226 Difference]: Without dead ends: 27054 [2023-12-18 23:36:02,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1434, Invalid=5876, Unknown=0, NotChecked=0, Total=7310 [2023-12-18 23:36:02,150 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 22990 mSDsluCounter, 13975 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22990 SdHoareTripleChecker+Valid, 15480 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:36:02,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22990 Valid, 15480 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 23:36:02,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27054 states. [2023-12-18 23:36:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27054 to 18006. [2023-12-18 23:36:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18006 states, 18004 states have (on average 1.2614419017996001) internal successors, (22711), 18005 states have internal predecessors, (22711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18006 states to 18006 states and 22711 transitions. [2023-12-18 23:36:03,251 INFO L78 Accepts]: Start accepts. Automaton has 18006 states and 22711 transitions. Word has length 113 [2023-12-18 23:36:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:36:03,251 INFO L495 AbstractCegarLoop]: Abstraction has 18006 states and 22711 transitions. [2023-12-18 23:36:03,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 18006 states and 22711 transitions. [2023-12-18 23:36:03,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-18 23:36:03,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:36:03,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:36:03,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 23:36:03,464 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 [2023-12-18 23:36:03,464 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:36:03,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:36:03,465 INFO L85 PathProgramCache]: Analyzing trace with hash 708338413, now seen corresponding path program 1 times [2023-12-18 23:36:03,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:36:03,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95371381] [2023-12-18 23:36:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:36:03,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:36:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:36:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:36:04,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:36:04,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95371381] [2023-12-18 23:36:04,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95371381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:36:04,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862582554] [2023-12-18 23:36:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:36:04,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:36:04,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:36:04,093 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) [2023-12-18 23:36:04,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 23:36:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:36:04,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-18 23:36:04,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:36:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:36:05,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:36:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:36:08,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862582554] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:36:08,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:36:08,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 46 [2023-12-18 23:36:08,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116936363] [2023-12-18 23:36:08,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:36:08,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-18 23:36:08,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:36:08,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-18 23:36:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2023-12-18 23:36:08,804 INFO L87 Difference]: Start difference. First operand 18006 states and 22711 transitions. Second operand has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:36:32,066 INFO L93 Difference]: Finished difference Result 33420 states and 41074 transitions. [2023-12-18 23:36:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2023-12-18 23:36:32,066 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 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 [2023-12-18 23:36:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:36:32,084 INFO L225 Difference]: With dead ends: 33420 [2023-12-18 23:36:32,084 INFO L226 Difference]: Without dead ends: 21402 [2023-12-18 23:36:32,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13215 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=4957, Invalid=34445, Unknown=0, NotChecked=0, Total=39402 [2023-12-18 23:36:32,094 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 27101 mSDsluCounter, 30648 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27101 SdHoareTripleChecker+Valid, 32173 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:36:32,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27101 Valid, 32173 Invalid, 2979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [183 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 23:36:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21402 states. [2023-12-18 23:36:33,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21402 to 18798. [2023-12-18 23:36:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18798 states, 18796 states have (on average 1.2502660140455415) internal successors, (23500), 18797 states have internal predecessors, (23500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18798 states to 18798 states and 23500 transitions. [2023-12-18 23:36:33,496 INFO L78 Accepts]: Start accepts. Automaton has 18798 states and 23500 transitions. Word has length 114 [2023-12-18 23:36:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:36:33,497 INFO L495 AbstractCegarLoop]: Abstraction has 18798 states and 23500 transitions. [2023-12-18 23:36:33,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 18798 states and 23500 transitions. [2023-12-18 23:36:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-18 23:36:33,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:36:33,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:36:33,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 23:36:33,707 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 [2023-12-18 23:36:33,707 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:36:33,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:36:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1370296555, now seen corresponding path program 1 times [2023-12-18 23:36:33,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:36:33,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240320560] [2023-12-18 23:36:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:36:33,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:36:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:36:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:36:35,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:36:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240320560] [2023-12-18 23:36:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240320560] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:36:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614683468] [2023-12-18 23:36:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:36:35,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:36:35,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:36:35,736 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) [2023-12-18 23:36:35,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 23:36:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:36:35,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-18 23:36:35,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:36:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:36:37,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:36:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:36:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614683468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:36:40,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:36:40,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 18] total 63 [2023-12-18 23:36:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373880508] [2023-12-18 23:36:40,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:36:40,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-18 23:36:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:36:40,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-18 23:36:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3675, Unknown=0, NotChecked=0, Total=3906 [2023-12-18 23:36:40,376 INFO L87 Difference]: Start difference. First operand 18798 states and 23500 transitions. Second operand has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:37:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:37:40,101 INFO L93 Difference]: Finished difference Result 42957 states and 52153 transitions. [2023-12-18 23:37:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2023-12-18 23:37:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 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 [2023-12-18 23:37:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:37:40,134 INFO L225 Difference]: With dead ends: 42957 [2023-12-18 23:37:40,134 INFO L226 Difference]: Without dead ends: 38003 [2023-12-18 23:37:40,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31370 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=9782, Invalid=81120, Unknown=0, NotChecked=0, Total=90902 [2023-12-18 23:37:40,146 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 28880 mSDsluCounter, 46735 mSDsCounter, 0 mSdLazyCounter, 7435 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28880 SdHoareTripleChecker+Valid, 48316 SdHoareTripleChecker+Invalid, 7884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 7435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:37:40,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28880 Valid, 48316 Invalid, 7884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [449 Valid, 7435 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-18 23:37:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38003 states. [2023-12-18 23:37:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38003 to 22254. [2023-12-18 23:37:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22254 states, 22252 states have (on average 1.2373719216250225) internal successors, (27534), 22253 states have internal predecessors, (27534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:37:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22254 states to 22254 states and 27534 transitions. [2023-12-18 23:37:42,126 INFO L78 Accepts]: Start accepts. Automaton has 22254 states and 27534 transitions. Word has length 115 [2023-12-18 23:37:42,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:37:42,127 INFO L495 AbstractCegarLoop]: Abstraction has 22254 states and 27534 transitions. [2023-12-18 23:37:42,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:37:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 22254 states and 27534 transitions. [2023-12-18 23:37:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-18 23:37:42,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:37:42,131 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] [2023-12-18 23:37:42,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 23:37:42,337 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 [2023-12-18 23:37:42,337 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:37:42,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:37:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash 156418931, now seen corresponding path program 1 times [2023-12-18 23:37:42,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:37:42,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175794562] [2023-12-18 23:37:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:37:42,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:37:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:37:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:37:43,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:37:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175794562] [2023-12-18 23:37:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175794562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:37:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825304493] [2023-12-18 23:37:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:37:43,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:37:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:37:43,052 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) [2023-12-18 23:37:43,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 23:37:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:37:43,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-18 23:37:43,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:37:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:37:44,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:37:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:37:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825304493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:37:46,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:37:46,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 34 [2023-12-18 23:37:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197321756] [2023-12-18 23:37:46,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:37:46,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-18 23:37:46,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:37:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-18 23:37:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 23:37:46,314 INFO L87 Difference]: Start difference. First operand 22254 states and 27534 transitions. Second operand has 34 states, 34 states have (on average 8.176470588235293) internal successors, (278), 34 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:37:51,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:37:51,788 INFO L93 Difference]: Finished difference Result 49265 states and 60135 transitions. [2023-12-18 23:37:51,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-18 23:37:51,788 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.176470588235293) internal successors, (278), 34 states have internal predecessors, (278), 0 states have call successors, (0), 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 [2023-12-18 23:37:51,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:37:51,816 INFO L225 Difference]: With dead ends: 49265 [2023-12-18 23:37:51,816 INFO L226 Difference]: Without dead ends: 33479 [2023-12-18 23:37:51,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1592, Invalid=6964, Unknown=0, NotChecked=0, Total=8556 [2023-12-18 23:37:51,828 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 19684 mSDsluCounter, 13297 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19684 SdHoareTripleChecker+Valid, 14885 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:37:51,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19684 Valid, 14885 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 23:37:51,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33479 states. [2023-12-18 23:37:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33479 to 13102. [2023-12-18 23:37:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13102 states, 13100 states have (on average 1.2672519083969465) internal successors, (16601), 13101 states have internal predecessors, (16601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:37:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13102 states to 13102 states and 16601 transitions. [2023-12-18 23:37:53,176 INFO L78 Accepts]: Start accepts. Automaton has 13102 states and 16601 transitions. Word has length 115 [2023-12-18 23:37:53,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:37:53,176 INFO L495 AbstractCegarLoop]: Abstraction has 13102 states and 16601 transitions. [2023-12-18 23:37:53,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.176470588235293) internal successors, (278), 34 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:37:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 13102 states and 16601 transitions. [2023-12-18 23:37:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-18 23:37:53,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:37:53,179 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] [2023-12-18 23:37:53,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 23:37:53,379 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 [2023-12-18 23:37:53,380 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:37:53,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:37:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -356445699, now seen corresponding path program 1 times [2023-12-18 23:37:53,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:37:53,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044256638] [2023-12-18 23:37:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:37:53,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:37:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:37:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:37:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:37:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044256638] [2023-12-18 23:37:54,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044256638] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:37:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807855178] [2023-12-18 23:37:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:37:54,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:37:54,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:37:54,347 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) [2023-12-18 23:37:54,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 23:37:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:37:54,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-18 23:37:54,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:37:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:37:58,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:38:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:06,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807855178] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:38:06,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:38:06,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 33, 31] total 81 [2023-12-18 23:38:06,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619508348] [2023-12-18 23:38:06,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:38:06,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-18 23:38:06,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-18 23:38:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=5955, Unknown=0, NotChecked=0, Total=6480 [2023-12-18 23:38:06,205 INFO L87 Difference]: Start difference. First operand 13102 states and 16601 transitions. Second operand has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:43:35,819 INFO L93 Difference]: Finished difference Result 47883 states and 58105 transitions. [2023-12-18 23:43:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 690 states. [2023-12-18 23:43:35,820 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 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 [2023-12-18 23:43:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:43:35,861 INFO L225 Difference]: With dead ends: 47883 [2023-12-18 23:43:35,861 INFO L226 Difference]: Without dead ends: 43580 [2023-12-18 23:43:35,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 764 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256108 ImplicationChecksByTransitivity, 312.4s TimeCoverageRelationStatistics Valid=37215, Invalid=548775, Unknown=0, NotChecked=0, Total=585990 [2023-12-18 23:43:35,899 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 34610 mSDsluCounter, 53437 mSDsCounter, 0 mSdLazyCounter, 10527 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34610 SdHoareTripleChecker+Valid, 55032 SdHoareTripleChecker+Invalid, 11115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 10527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:43:35,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34610 Valid, 55032 Invalid, 11115 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [588 Valid, 10527 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2023-12-18 23:43:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43580 states. [2023-12-18 23:43:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43580 to 24130. [2023-12-18 23:43:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24130 states, 24128 states have (on average 1.2319711538461537) internal successors, (29725), 24129 states have internal predecessors, (29725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24130 states to 24130 states and 29725 transitions. [2023-12-18 23:43:38,922 INFO L78 Accepts]: Start accepts. Automaton has 24130 states and 29725 transitions. Word has length 116 [2023-12-18 23:43:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:43:38,922 INFO L495 AbstractCegarLoop]: Abstraction has 24130 states and 29725 transitions. [2023-12-18 23:43:38,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 24130 states and 29725 transitions. [2023-12-18 23:43:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-18 23:43:38,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:43:38,925 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] [2023-12-18 23:43:38,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 23:43:39,125 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 [2023-12-18 23:43:39,126 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:43:39,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:43:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash 599162781, now seen corresponding path program 1 times [2023-12-18 23:43:39,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:43:39,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675710858] [2023-12-18 23:43:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:39,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:43:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:40,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:43:40,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675710858] [2023-12-18 23:43:40,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675710858] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:43:40,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488332308] [2023-12-18 23:43:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:40,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:40,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:43:40,745 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) [2023-12-18 23:43:40,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 23:43:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:40,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-18 23:43:40,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:43:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:47,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:43:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:53,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488332308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:43:53,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:43:53,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 33, 31] total 89 [2023-12-18 23:43:53,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207905007] [2023-12-18 23:43:53,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:43:53,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-18 23:43:53,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:43:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-18 23:43:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=7238, Unknown=0, NotChecked=0, Total=7832 [2023-12-18 23:43:53,422 INFO L87 Difference]: Start difference. First operand 24130 states and 29725 transitions. Second operand has 89 states, 89 states have (on average 3.764044943820225) internal successors, (335), 89 states have internal predecessors, (335), 0 states have call successors, (0), 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... [2023-12-18 23:48:11,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 451 states. [2023-12-18 23:48:11,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 536 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111010 ImplicationChecksByTransitivity, 252.1s TimeCoverageRelationStatistics Valid=29993, Invalid=258913, Unknown=0, NotChecked=0, Total=288906 [2023-12-18 23:48:11,801 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 11193 mSDsluCounter, 8367 mSDsCounter, 0 mSdLazyCounter, 8938 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11193 SdHoareTripleChecker+Valid, 8650 SdHoareTripleChecker+Invalid, 9546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 8938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:48:11,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11193 Valid, 8650 Invalid, 9546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [608 Valid, 8938 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-18 23:48:11,803 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-18 23:48:11,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-18 23:48:11,830 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 [2023-12-18 23:48:11,830 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 23:48:12,008 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 [2023-12-18 23:48:12,009 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (24130states) and FLOYD_HOARE automaton (currently 451 states, 89 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-24-6-4-3-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-2-1 context. [2023-12-18 23:48:12,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-18 23:48:12,013 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] [2023-12-18 23:48:12,015 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 23:48:12,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:48:12 BoogieIcfgContainer [2023-12-18 23:48:12,017 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 23:48:12,017 INFO L158 Benchmark]: Toolchain (without parser) took 810981.81ms. Allocated memory was 252.7MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 188.7MB in the beginning and 719.8MB in the end (delta: -531.1MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-18 23:48:12,019 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 23:48:12,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1570.76ms. Allocated memory is still 252.7MB. Free memory was 188.7MB in the beginning and 178.9MB in the end (delta: 9.8MB). Peak memory consumption was 117.8MB. Max. memory is 8.0GB. [2023-12-18 23:48:12,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 346.91ms. Allocated memory was 252.7MB in the beginning and 332.4MB in the end (delta: 79.7MB). Free memory was 178.9MB in the beginning and 199.0MB in the end (delta: -20.2MB). Peak memory consumption was 70.0MB. Max. memory is 8.0GB. [2023-12-18 23:48:12,022 INFO L158 Benchmark]: Boogie Preprocessor took 528.22ms. Allocated memory is still 332.4MB. Free memory was 199.0MB in the beginning and 200.6MB in the end (delta: -1.6MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-18 23:48:12,026 INFO L158 Benchmark]: RCFGBuilder took 3891.99ms. Allocated memory was 332.4MB in the beginning and 619.7MB in the end (delta: 287.3MB). Free memory was 200.6MB in the beginning and 358.0MB in the end (delta: -157.4MB). Peak memory consumption was 230.6MB. Max. memory is 8.0GB. [2023-12-18 23:48:12,026 INFO L158 Benchmark]: TraceAbstraction took 804637.09ms. Allocated memory was 619.7MB in the beginning and 2.1GB in the end (delta: 1.5GB). Free memory was 357.0MB in the beginning and 719.8MB in the end (delta: -362.8MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-18 23:48:12,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1570.76ms. Allocated memory is still 252.7MB. Free memory was 188.7MB in the beginning and 178.9MB in the end (delta: 9.8MB). Peak memory consumption was 117.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 346.91ms. Allocated memory was 252.7MB in the beginning and 332.4MB in the end (delta: 79.7MB). Free memory was 178.9MB in the beginning and 199.0MB in the end (delta: -20.2MB). Peak memory consumption was 70.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 528.22ms. Allocated memory is still 332.4MB. Free memory was 199.0MB in the beginning and 200.6MB in the end (delta: -1.6MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3891.99ms. Allocated memory was 332.4MB in the beginning and 619.7MB in the end (delta: 287.3MB). Free memory was 200.6MB in the beginning and 358.0MB in the end (delta: -157.4MB). Peak memory consumption was 230.6MB. Max. memory is 8.0GB. * TraceAbstraction took 804637.09ms. Allocated memory was 619.7MB in the beginning and 2.1GB in the end (delta: 1.5GB). Free memory was 357.0MB in the beginning and 719.8MB in the end (delta: -362.8MB). 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: 361]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 361). Cancelled while NwaCegarLoop was constructing difference of abstraction (24130states) and FLOYD_HOARE automaton (currently 451 states, 89 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-24-6-4-3-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 520]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 520). Cancelled while NwaCegarLoop was constructing difference of abstraction (24130states) and FLOYD_HOARE automaton (currently 451 states, 89 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-24-6-4-3-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 804.6s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 717.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 323148 SdHoareTripleChecker+Valid, 43.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 323148 mSDsluCounter, 327586 SdHoareTripleChecker+Invalid, 39.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 279545 mSDsCounter, 3493 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44422 IncrementalHoareTripleChecker+Invalid, 47915 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3493 mSolverCounterUnsat, 48041 mSDtfsCounter, 44422 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4884 GetRequests, 2248 SyntacticMatches, 2 SemanticMatches, 2633 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429470 ImplicationChecksByTransitivity, 670.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24130occurred in iteration=32, InterpolantAutomatonStates: 1665, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.3s AutomataMinimizationTime, 32 MinimizatonAttempts, 123068 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 66.7s InterpolantComputationTime, 3517 NumberOfCodeBlocks, 3517 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 4747 ConstructedInterpolants, 0 QuantifiedInterpolants, 103452 SizeOfPredicates, 127 NumberOfNonLiveVariables, 6082 ConjunctsInSsa, 373 ConjunctsInUnsatCore, 61 InterpolantComputations, 19 PerfectInterpolantSequences, 810/2381 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