/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:59:00,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:59:00,099 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:59:00,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:59:00,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:59:00,125 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:59:00,126 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:59:00,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:59:00,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:59:00,130 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:59:00,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:59:00,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:59:00,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:59:00,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:59:00,132 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:59:00,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:59:00,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:59:00,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:59:00,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:59:00,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:59:00,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:59:00,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:59:00,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:59:00,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:59:00,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:59:00,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:59:00,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:59:00,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:59:00,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:59:00,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:59:00,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:59:00,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:59:00,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:59:00,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:59:00,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:59:00,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:59:00,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:59:00,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:59:00,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:59:00,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:59:00,139 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:59:00,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:59:00,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:59:00,139 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:59:00,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:59:00,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:59:00,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:59:00,382 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:59:00,382 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:59:00,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-12-16 00:59:01,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:59:01,923 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:59:01,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-12-16 00:59:01,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2fbf662f/46b916d33dff4b94b8ce8d5b41e966ae/FLAG04c5043b0 [2023-12-16 00:59:01,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2fbf662f/46b916d33dff4b94b8ce8d5b41e966ae [2023-12-16 00:59:01,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:59:01,964 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:59:01,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:59:01,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:59:01,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:59:01,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:59:01" (1/1) ... [2023-12-16 00:59:01,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dd2ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:01, skipping insertion in model container [2023-12-16 00:59:01,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:59:01" (1/1) ... [2023-12-16 00:59:02,068 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:59:02,373 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.6.ufo.UNBOUNDED.pals+Problem12_label00.c[15510,15523] [2023-12-16 00:59:02,398 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.6.ufo.UNBOUNDED.pals+Problem12_label00.c[17385,17398] [2023-12-16 00:59:02,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:59:02,891 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:59:02,926 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.6.ufo.UNBOUNDED.pals+Problem12_label00.c[15510,15523] [2023-12-16 00:59:02,929 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.6.ufo.UNBOUNDED.pals+Problem12_label00.c[17385,17398] [2023-12-16 00:59:03,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:59:03,214 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:59:03,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03 WrapperNode [2023-12-16 00:59:03,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:59:03,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:59:03,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:59:03,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:59:03,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:03,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:03,763 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5151 [2023-12-16 00:59:03,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:59:03,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:59:03,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:59:03,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:59:03,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:03,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:03,829 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:03,972 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 00:59:03,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:03,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:04,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:04,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:04,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:04,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:04,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:59:04,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:59:04,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:59:04,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:59:04,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (1/1) ... [2023-12-16 00:59:04,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:59:04,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:59:04,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 00:59:04,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 00:59:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:59:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:59:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:59:04,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:59:04,428 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:59:04,430 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:59:07,458 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:59:07,511 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:59:07,512 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 00:59:07,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:59:07 BoogieIcfgContainer [2023-12-16 00:59:07,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:59:07,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:59:07,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:59:07,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:59:07,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:59:01" (1/3) ... [2023-12-16 00:59:07,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5149a0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:59:07, skipping insertion in model container [2023-12-16 00:59:07,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:59:03" (2/3) ... [2023-12-16 00:59:07,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5149a0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:59:07, skipping insertion in model container [2023-12-16 00:59:07,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:59:07" (3/3) ... [2023-12-16 00:59:07,519 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-12-16 00:59:07,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:59:07,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:59:07,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:59:07,584 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;@6c7ce97f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:59:07,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:59:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 00:59:07,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:07,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:07,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:07,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1909186540, now seen corresponding path program 1 times [2023-12-16 00:59:07,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:07,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895273773] [2023-12-16 00:59:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:07,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895273773] [2023-12-16 00:59:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895273773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:07,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:07,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:59:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591201781] [2023-12-16 00:59:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:59:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:07,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:59:07,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:59:07,738 INFO L87 Difference]: Start difference. First operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:07,802 INFO L93 Difference]: Finished difference Result 1657 states and 3259 transitions. [2023-12-16 00:59:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:59:07,810 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-16 00:59:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:07,823 INFO L225 Difference]: With dead ends: 1657 [2023-12-16 00:59:07,823 INFO L226 Difference]: Without dead ends: 847 [2023-12-16 00:59:07,828 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 [2023-12-16 00:59:07,830 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:07,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1601 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-16 00:59:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-16 00:59:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8958579881656805) internal successors, (1602), 846 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1602 transitions. [2023-12-16 00:59:07,897 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1602 transitions. Word has length 15 [2023-12-16 00:59:07,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:07,897 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1602 transitions. [2023-12-16 00:59:07,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1602 transitions. [2023-12-16 00:59:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 00:59:07,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:07,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:07,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:59:07,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:07,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1919677999, now seen corresponding path program 1 times [2023-12-16 00:59:07,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:07,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292911921] [2023-12-16 00:59:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:07,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:07,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:07,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292911921] [2023-12-16 00:59:07,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292911921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:07,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:07,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:59:07,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580282220] [2023-12-16 00:59:07,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:07,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:07,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:07,986 INFO L87 Difference]: Start difference. First operand 847 states and 1602 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:10,835 INFO L93 Difference]: Finished difference Result 2351 states and 4475 transitions. [2023-12-16 00:59:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:10,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-16 00:59:10,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:10,841 INFO L225 Difference]: With dead ends: 2351 [2023-12-16 00:59:10,841 INFO L226 Difference]: Without dead ends: 1598 [2023-12-16 00:59:10,843 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 [2023-12-16 00:59:10,844 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 966 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:10,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 588 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 00:59:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-12-16 00:59:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2023-12-16 00:59:10,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1596 states have (on average 1.6472431077694236) internal successors, (2629), 1597 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2629 transitions. [2023-12-16 00:59:10,873 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2629 transitions. Word has length 15 [2023-12-16 00:59:10,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:10,873 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2629 transitions. [2023-12-16 00:59:10,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2629 transitions. [2023-12-16 00:59:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 00:59:10,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:10,874 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] [2023-12-16 00:59:10,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:59:10,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:10,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:10,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1430428717, now seen corresponding path program 1 times [2023-12-16 00:59:10,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:10,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94447959] [2023-12-16 00:59:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:10,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:11,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:11,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94447959] [2023-12-16 00:59:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94447959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:11,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:11,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:59:11,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130687785] [2023-12-16 00:59:11,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:11,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:59:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:11,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:59:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:59:11,039 INFO L87 Difference]: Start difference. First operand 1598 states and 2629 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:11,094 INFO L93 Difference]: Finished difference Result 1650 states and 2711 transitions. [2023-12-16 00:59:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:59:11,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-16 00:59:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:11,099 INFO L225 Difference]: With dead ends: 1650 [2023-12-16 00:59:11,099 INFO L226 Difference]: Without dead ends: 1598 [2023-12-16 00:59:11,099 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 [2023-12-16 00:59:11,100 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:11,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4753 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-12-16 00:59:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2023-12-16 00:59:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1596 states have (on average 1.6221804511278195) internal successors, (2589), 1597 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2589 transitions. [2023-12-16 00:59:11,121 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2589 transitions. Word has length 23 [2023-12-16 00:59:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:11,122 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2589 transitions. [2023-12-16 00:59:11,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2589 transitions. [2023-12-16 00:59:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:59:11,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:11,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:59:11,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:11,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash 270250855, now seen corresponding path program 1 times [2023-12-16 00:59:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013131919] [2023-12-16 00:59:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:11,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:11,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:11,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013131919] [2023-12-16 00:59:11,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013131919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:11,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:11,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 00:59:11,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332327990] [2023-12-16 00:59:11,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:11,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:59:11,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:59:11,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:59:11,273 INFO L87 Difference]: Start difference. First operand 1598 states and 2589 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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) [2023-12-16 00:59:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:11,517 INFO L93 Difference]: Finished difference Result 2186 states and 3537 transitions. [2023-12-16 00:59:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 00:59:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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 [2023-12-16 00:59:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:11,524 INFO L225 Difference]: With dead ends: 2186 [2023-12-16 00:59:11,524 INFO L226 Difference]: Without dead ends: 2137 [2023-12-16 00:59:11,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:59:11,525 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 9829 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9829 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:11,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9829 Valid, 3039 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:59:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2023-12-16 00:59:11,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1645. [2023-12-16 00:59:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1643 states have (on average 1.6220328667072428) internal successors, (2665), 1644 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2665 transitions. [2023-12-16 00:59:11,550 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2665 transitions. Word has length 62 [2023-12-16 00:59:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:11,550 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2665 transitions. [2023-12-16 00:59:11,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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) [2023-12-16 00:59:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2665 transitions. [2023-12-16 00:59:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 00:59:11,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:11,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:11,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:59:11,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:11,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:11,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1880202711, now seen corresponding path program 1 times [2023-12-16 00:59:11,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:11,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105419286] [2023-12-16 00:59:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:11,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:11,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105419286] [2023-12-16 00:59:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105419286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:11,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157091023] [2023-12-16 00:59:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:11,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:11,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:11,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:11,650 INFO L87 Difference]: Start difference. First operand 1645 states and 2665 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) [2023-12-16 00:59:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:11,680 INFO L93 Difference]: Finished difference Result 1826 states and 2956 transitions. [2023-12-16 00:59:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:11,681 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 [2023-12-16 00:59:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:11,687 INFO L225 Difference]: With dead ends: 1826 [2023-12-16 00:59:11,688 INFO L226 Difference]: Without dead ends: 1730 [2023-12-16 00:59:11,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:11,689 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1490 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:11,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1626 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-12-16 00:59:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1726. [2023-12-16 00:59:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6200696055684454) internal successors, (2793), 1725 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2793 transitions. [2023-12-16 00:59:11,718 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2793 transitions. Word has length 64 [2023-12-16 00:59:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:11,719 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2793 transitions. [2023-12-16 00:59:11,719 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) [2023-12-16 00:59:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2793 transitions. [2023-12-16 00:59:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 00:59:11,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:11,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:11,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:59:11,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:11,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1882347663, now seen corresponding path program 1 times [2023-12-16 00:59:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242000813] [2023-12-16 00:59:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:11,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:11,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:11,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242000813] [2023-12-16 00:59:11,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242000813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:11,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:11,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 00:59:11,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538178858] [2023-12-16 00:59:11,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:11,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:59:11,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:59:11,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:59:11,982 INFO L87 Difference]: Start difference. First operand 1726 states and 2793 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2023-12-16 00:59:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:12,163 INFO L93 Difference]: Finished difference Result 1905 states and 3077 transitions. [2023-12-16 00:59:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:59:12,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 [2023-12-16 00:59:12,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:12,168 INFO L225 Difference]: With dead ends: 1905 [2023-12-16 00:59:12,169 INFO L226 Difference]: Without dead ends: 1728 [2023-12-16 00:59:12,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:59:12,170 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1533 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:12,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 2004 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:59:12,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2023-12-16 00:59:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2023-12-16 00:59:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.618909512761021) internal successors, (2791), 1725 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2791 transitions. [2023-12-16 00:59:12,193 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2791 transitions. Word has length 64 [2023-12-16 00:59:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:12,193 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2791 transitions. [2023-12-16 00:59:12,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2023-12-16 00:59:12,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2791 transitions. [2023-12-16 00:59:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-16 00:59:12,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:12,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:12,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:59:12,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:12,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1905436323, now seen corresponding path program 1 times [2023-12-16 00:59:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:12,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631660774] [2023-12-16 00:59:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:12,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631660774] [2023-12-16 00:59:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631660774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:12,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:59:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917596608] [2023-12-16 00:59:12,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:12,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:59:12,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:59:12,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:59:12,303 INFO L87 Difference]: Start difference. First operand 1726 states and 2791 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:12,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:12,331 INFO L93 Difference]: Finished difference Result 1734 states and 2800 transitions. [2023-12-16 00:59:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:59:12,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-16 00:59:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:12,336 INFO L225 Difference]: With dead ends: 1734 [2023-12-16 00:59:12,336 INFO L226 Difference]: Without dead ends: 1732 [2023-12-16 00:59:12,337 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 [2023-12-16 00:59:12,337 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4666 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 [2023-12-16 00:59:12,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4666 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-16 00:59:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2023-12-16 00:59:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.6168981481481481) internal successors, (2794), 1729 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2794 transitions. [2023-12-16 00:59:12,360 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2794 transitions. Word has length 65 [2023-12-16 00:59:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:12,360 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2794 transitions. [2023-12-16 00:59:12,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:12,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2794 transitions. [2023-12-16 00:59:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:59:12,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:12,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:12,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:59:12,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:12,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash -280645265, now seen corresponding path program 1 times [2023-12-16 00:59:12,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:12,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119081276] [2023-12-16 00:59:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:12,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:12,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119081276] [2023-12-16 00:59:12,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119081276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:12,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:12,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:12,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323790655] [2023-12-16 00:59:12,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:12,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:12,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:12,398 INFO L87 Difference]: Start difference. First operand 1730 states and 2794 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) [2023-12-16 00:59:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:12,426 INFO L93 Difference]: Finished difference Result 2076 states and 3334 transitions. [2023-12-16 00:59:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:12,427 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 [2023-12-16 00:59:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:12,432 INFO L225 Difference]: With dead ends: 2076 [2023-12-16 00:59:12,432 INFO L226 Difference]: Without dead ends: 1895 [2023-12-16 00:59:12,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:12,433 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1503 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:12,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1691 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2023-12-16 00:59:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2023-12-16 00:59:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1891 states have (on average 1.6102591221575886) internal successors, (3045), 1892 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3045 transitions. [2023-12-16 00:59:12,468 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3045 transitions. Word has length 66 [2023-12-16 00:59:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:12,468 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3045 transitions. [2023-12-16 00:59:12,468 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) [2023-12-16 00:59:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3045 transitions. [2023-12-16 00:59:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:59:12,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:12,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:12,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:59:12,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:12,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:12,470 INFO L85 PathProgramCache]: Analyzing trace with hash -240701329, now seen corresponding path program 1 times [2023-12-16 00:59:12,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:12,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143323610] [2023-12-16 00:59:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:12,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:12,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:12,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143323610] [2023-12-16 00:59:12,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143323610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:12,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932536786] [2023-12-16 00:59:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:12,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:12,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:12,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:12,509 INFO L87 Difference]: Start difference. First operand 1893 states and 3045 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) [2023-12-16 00:59:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:12,540 INFO L93 Difference]: Finished difference Result 2549 states and 4059 transitions. [2023-12-16 00:59:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:12,540 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 [2023-12-16 00:59:12,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:12,546 INFO L225 Difference]: With dead ends: 2549 [2023-12-16 00:59:12,546 INFO L226 Difference]: Without dead ends: 2205 [2023-12-16 00:59:12,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:12,547 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1501 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:12,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2023-12-16 00:59:12,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2203. [2023-12-16 00:59:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2201 states have (on average 1.5970013630168105) internal successors, (3515), 2202 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3515 transitions. [2023-12-16 00:59:12,583 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3515 transitions. Word has length 66 [2023-12-16 00:59:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:12,584 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3515 transitions. [2023-12-16 00:59:12,584 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) [2023-12-16 00:59:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3515 transitions. [2023-12-16 00:59:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:59:12,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:12,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:12,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:59:12,585 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:12,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:12,585 INFO L85 PathProgramCache]: Analyzing trace with hash -866357393, now seen corresponding path program 1 times [2023-12-16 00:59:12,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:12,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622135939] [2023-12-16 00:59:12,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:12,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:12,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:12,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622135939] [2023-12-16 00:59:12,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622135939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:12,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:12,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699310889] [2023-12-16 00:59:12,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:12,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:12,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:12,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:12,622 INFO L87 Difference]: Start difference. First operand 2203 states and 3515 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) [2023-12-16 00:59:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:12,706 INFO L93 Difference]: Finished difference Result 3447 states and 5413 transitions. [2023-12-16 00:59:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:12,720 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 [2023-12-16 00:59:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:12,729 INFO L225 Difference]: With dead ends: 3447 [2023-12-16 00:59:12,729 INFO L226 Difference]: Without dead ends: 2793 [2023-12-16 00:59:12,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:12,730 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1499 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:12,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1695 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2023-12-16 00:59:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2791. [2023-12-16 00:59:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2789 states have (on average 1.5743994263176766) internal successors, (4391), 2790 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4391 transitions. [2023-12-16 00:59:12,778 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4391 transitions. Word has length 66 [2023-12-16 00:59:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:12,778 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 4391 transitions. [2023-12-16 00:59:12,779 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) [2023-12-16 00:59:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4391 transitions. [2023-12-16 00:59:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:59:12,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:12,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:12,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:59:12,782 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:12,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash 22376047, now seen corresponding path program 1 times [2023-12-16 00:59:12,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:12,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948531367] [2023-12-16 00:59:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:12,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:12,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:12,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948531367] [2023-12-16 00:59:12,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948531367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:12,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:12,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541323539] [2023-12-16 00:59:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:12,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:12,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:12,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:12,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:12,821 INFO L87 Difference]: Start difference. First operand 2791 states and 4391 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) [2023-12-16 00:59:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:12,871 INFO L93 Difference]: Finished difference Result 5147 states and 7929 transitions. [2023-12-16 00:59:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:12,872 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 [2023-12-16 00:59:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:12,882 INFO L225 Difference]: With dead ends: 5147 [2023-12-16 00:59:12,882 INFO L226 Difference]: Without dead ends: 3905 [2023-12-16 00:59:12,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:12,885 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1497 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:12,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:12,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2023-12-16 00:59:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3903. [2023-12-16 00:59:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3901 states have (on average 1.5419123301717508) internal successors, (6015), 3902 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 6015 transitions. [2023-12-16 00:59:12,961 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 6015 transitions. Word has length 66 [2023-12-16 00:59:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:12,961 INFO L495 AbstractCegarLoop]: Abstraction has 3903 states and 6015 transitions. [2023-12-16 00:59:12,961 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) [2023-12-16 00:59:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 6015 transitions. [2023-12-16 00:59:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:59:12,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:12,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:12,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:59:12,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:12,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash -12062097, now seen corresponding path program 1 times [2023-12-16 00:59:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:12,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90850500] [2023-12-16 00:59:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:13,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:13,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90850500] [2023-12-16 00:59:13,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90850500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:13,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:13,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:13,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642389712] [2023-12-16 00:59:13,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:13,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:13,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:13,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:13,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:13,004 INFO L87 Difference]: Start difference. First operand 3903 states and 6015 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) [2023-12-16 00:59:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:13,079 INFO L93 Difference]: Finished difference Result 8355 states and 12577 transitions. [2023-12-16 00:59:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:13,080 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 [2023-12-16 00:59:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:13,104 INFO L225 Difference]: With dead ends: 8355 [2023-12-16 00:59:13,104 INFO L226 Difference]: Without dead ends: 6001 [2023-12-16 00:59:13,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:13,108 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1505 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:13,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2023-12-16 00:59:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5999. [2023-12-16 00:59:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 5997 states have (on average 1.5019176254794064) internal successors, (9007), 5998 states have internal predecessors, (9007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 9007 transitions. [2023-12-16 00:59:13,252 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 9007 transitions. Word has length 66 [2023-12-16 00:59:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:13,253 INFO L495 AbstractCegarLoop]: Abstraction has 5999 states and 9007 transitions. [2023-12-16 00:59:13,253 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) [2023-12-16 00:59:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 9007 transitions. [2023-12-16 00:59:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 00:59:13,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:13,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:13,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:59:13,254 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:13,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1491592148, now seen corresponding path program 1 times [2023-12-16 00:59:13,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:13,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839514480] [2023-12-16 00:59:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:13,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:13,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839514480] [2023-12-16 00:59:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839514480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:13,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:13,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:13,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376657769] [2023-12-16 00:59:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:13,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:13,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:13,294 INFO L87 Difference]: Start difference. First operand 5999 states and 9007 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:13,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:13,394 INFO L93 Difference]: Finished difference Result 10614 states and 15861 transitions. [2023-12-16 00:59:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:13,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-16 00:59:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:13,407 INFO L225 Difference]: With dead ends: 10614 [2023-12-16 00:59:13,408 INFO L226 Difference]: Without dead ends: 8115 [2023-12-16 00:59:13,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:13,415 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1504 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:13,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:13,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2023-12-16 00:59:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 8113. [2023-12-16 00:59:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 8111 states have (on average 1.485513500184934) internal successors, (12049), 8112 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12049 transitions. [2023-12-16 00:59:13,608 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12049 transitions. Word has length 68 [2023-12-16 00:59:13,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:13,609 INFO L495 AbstractCegarLoop]: Abstraction has 8113 states and 12049 transitions. [2023-12-16 00:59:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12049 transitions. [2023-12-16 00:59:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 00:59:13,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:13,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:13,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 00:59:13,611 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:13,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1535692104, now seen corresponding path program 1 times [2023-12-16 00:59:13,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:13,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7065552] [2023-12-16 00:59:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:13,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:59:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7065552] [2023-12-16 00:59:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7065552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:13,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 00:59:13,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377521694] [2023-12-16 00:59:13,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:13,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:59:13,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:59:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:59:13,761 INFO L87 Difference]: Start difference. First operand 8113 states and 12049 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:14,602 INFO L93 Difference]: Finished difference Result 48831 states and 71160 transitions. [2023-12-16 00:59:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:59:14,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 00:59:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:14,669 INFO L225 Difference]: With dead ends: 48831 [2023-12-16 00:59:14,669 INFO L226 Difference]: Without dead ends: 42269 [2023-12-16 00:59:14,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:59:14,686 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8086 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8086 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:14,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8086 Valid, 3866 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:59:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42269 states. [2023-12-16 00:59:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42269 to 14673. [2023-12-16 00:59:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14673 states, 14671 states have (on average 1.4647263308567924) internal successors, (21489), 14672 states have internal predecessors, (21489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14673 states to 14673 states and 21489 transitions. [2023-12-16 00:59:15,306 INFO L78 Accepts]: Start accepts. Automaton has 14673 states and 21489 transitions. Word has length 86 [2023-12-16 00:59:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:15,306 INFO L495 AbstractCegarLoop]: Abstraction has 14673 states and 21489 transitions. [2023-12-16 00:59:15,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 14673 states and 21489 transitions. [2023-12-16 00:59:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 00:59:15,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:15,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:15,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:59:15,309 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:15,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1575636040, now seen corresponding path program 1 times [2023-12-16 00:59:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:15,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590355868] [2023-12-16 00:59:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 00:59:15,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590355868] [2023-12-16 00:59:15,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590355868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:15,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:15,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 00:59:15,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885297661] [2023-12-16 00:59:15,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:59:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:59:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:59:15,476 INFO L87 Difference]: Start difference. First operand 14673 states and 21489 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:16,365 INFO L93 Difference]: Finished difference Result 55391 states and 80600 transitions. [2023-12-16 00:59:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:59:16,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 00:59:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:16,439 INFO L225 Difference]: With dead ends: 55391 [2023-12-16 00:59:16,439 INFO L226 Difference]: Without dead ends: 48829 [2023-12-16 00:59:16,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:59:16,459 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8134 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8134 SdHoareTripleChecker+Valid, 3790 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:16,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8134 Valid, 3790 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:59:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48829 states. [2023-12-16 00:59:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48829 to 24529. [2023-12-16 00:59:17,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24529 states, 24527 states have (on average 1.4501977412647287) internal successors, (35569), 24528 states have internal predecessors, (35569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24529 states to 24529 states and 35569 transitions. [2023-12-16 00:59:17,190 INFO L78 Accepts]: Start accepts. Automaton has 24529 states and 35569 transitions. Word has length 86 [2023-12-16 00:59:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:17,190 INFO L495 AbstractCegarLoop]: Abstraction has 24529 states and 35569 transitions. [2023-12-16 00:59:17,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 24529 states and 35569 transitions. [2023-12-16 00:59:17,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 00:59:17,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:17,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:17,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 00:59:17,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:17,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash 949979976, now seen corresponding path program 1 times [2023-12-16 00:59:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:17,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536008139] [2023-12-16 00:59:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:17,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 00:59:17,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:17,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536008139] [2023-12-16 00:59:17,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536008139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:17,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:17,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 00:59:17,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869654415] [2023-12-16 00:59:17,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:17,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:59:17,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:59:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:59:17,326 INFO L87 Difference]: Start difference. First operand 24529 states and 35569 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:18,627 INFO L93 Difference]: Finished difference Result 61951 states and 90040 transitions. [2023-12-16 00:59:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:59:18,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 00:59:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:18,725 INFO L225 Difference]: With dead ends: 61951 [2023-12-16 00:59:18,725 INFO L226 Difference]: Without dead ends: 55389 [2023-12-16 00:59:18,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:59:18,748 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8187 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8187 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:18,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8187 Valid, 3768 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:59:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55389 states. [2023-12-16 00:59:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55389 to 31089. [2023-12-16 00:59:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31089 states, 31087 states have (on average 1.4478399330910026) internal successors, (45009), 31088 states have internal predecessors, (45009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31089 states to 31089 states and 45009 transitions. [2023-12-16 00:59:19,752 INFO L78 Accepts]: Start accepts. Automaton has 31089 states and 45009 transitions. Word has length 86 [2023-12-16 00:59:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:19,752 INFO L495 AbstractCegarLoop]: Abstraction has 31089 states and 45009 transitions. [2023-12-16 00:59:19,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 31089 states and 45009 transitions. [2023-12-16 00:59:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 00:59:19,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:19,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:19,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 00:59:19,756 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:19,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1838713416, now seen corresponding path program 1 times [2023-12-16 00:59:19,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:19,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125057342] [2023-12-16 00:59:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:19,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 00:59:19,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:19,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125057342] [2023-12-16 00:59:19,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125057342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:19,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:19,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 00:59:19,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117370105] [2023-12-16 00:59:19,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:19,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:59:19,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:59:19,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:59:19,902 INFO L87 Difference]: Start difference. First operand 31089 states and 45009 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:21,041 INFO L93 Difference]: Finished difference Result 68511 states and 99480 transitions. [2023-12-16 00:59:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:59:21,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 00:59:21,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:21,153 INFO L225 Difference]: With dead ends: 68511 [2023-12-16 00:59:21,153 INFO L226 Difference]: Without dead ends: 61949 [2023-12-16 00:59:21,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:59:21,174 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8094 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8094 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:21,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8094 Valid, 3853 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:59:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61949 states. [2023-12-16 00:59:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61949 to 37649. [2023-12-16 00:59:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37649 states, 37647 states have (on average 1.4463038223497224) internal successors, (54449), 37648 states have internal predecessors, (54449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37649 states to 37649 states and 54449 transitions. [2023-12-16 00:59:22,325 INFO L78 Accepts]: Start accepts. Automaton has 37649 states and 54449 transitions. Word has length 86 [2023-12-16 00:59:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:22,330 INFO L495 AbstractCegarLoop]: Abstraction has 37649 states and 54449 transitions. [2023-12-16 00:59:22,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37649 states and 54449 transitions. [2023-12-16 00:59:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 00:59:22,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:22,335 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:22,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 00:59:22,335 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:22,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:22,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1804275272, now seen corresponding path program 1 times [2023-12-16 00:59:22,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:22,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952959399] [2023-12-16 00:59:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:22,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:59:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952959399] [2023-12-16 00:59:22,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952959399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:22,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:22,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 00:59:22,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592041817] [2023-12-16 00:59:22,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:22,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:59:22,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:59:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:59:22,467 INFO L87 Difference]: Start difference. First operand 37649 states and 54449 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:23,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:23,913 INFO L93 Difference]: Finished difference Result 75071 states and 108920 transitions. [2023-12-16 00:59:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:59:23,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 00:59:23,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:23,999 INFO L225 Difference]: With dead ends: 75071 [2023-12-16 00:59:24,000 INFO L226 Difference]: Without dead ends: 68509 [2023-12-16 00:59:24,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:59:24,012 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8030 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:24,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 4006 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:59:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68509 states. [2023-12-16 00:59:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68509 to 44209. [2023-12-16 00:59:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44209 states, 44207 states have (on average 1.4452236071210443) internal successors, (63889), 44208 states have internal predecessors, (63889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44209 states to 44209 states and 63889 transitions. [2023-12-16 00:59:25,231 INFO L78 Accepts]: Start accepts. Automaton has 44209 states and 63889 transitions. Word has length 86 [2023-12-16 00:59:25,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:25,231 INFO L495 AbstractCegarLoop]: Abstraction has 44209 states and 63889 transitions. [2023-12-16 00:59:25,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 44209 states and 63889 transitions. [2023-12-16 00:59:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 00:59:25,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:25,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:25,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 00:59:25,235 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:25,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:25,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1740095646, now seen corresponding path program 1 times [2023-12-16 00:59:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476216457] [2023-12-16 00:59:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:25,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:25,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:25,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476216457] [2023-12-16 00:59:25,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476216457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:25,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:25,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659225128] [2023-12-16 00:59:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:25,283 INFO L87 Difference]: Start difference. First operand 44209 states and 63889 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:28,793 INFO L93 Difference]: Finished difference Result 47215 states and 68816 transitions. [2023-12-16 00:59:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 00:59:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:28,835 INFO L225 Difference]: With dead ends: 47215 [2023-12-16 00:59:28,835 INFO L226 Difference]: Without dead ends: 45711 [2023-12-16 00:59:28,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:28,841 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 753 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:28,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1398 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 00:59:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45711 states. [2023-12-16 00:59:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45711 to 45711. [2023-12-16 00:59:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45711 states, 45709 states have (on average 1.4449014417291999) internal successors, (66045), 45710 states have internal predecessors, (66045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45711 states to 45711 states and 66045 transitions. [2023-12-16 00:59:29,825 INFO L78 Accepts]: Start accepts. Automaton has 45711 states and 66045 transitions. Word has length 86 [2023-12-16 00:59:29,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:29,826 INFO L495 AbstractCegarLoop]: Abstraction has 45711 states and 66045 transitions. [2023-12-16 00:59:29,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 45711 states and 66045 transitions. [2023-12-16 00:59:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-16 00:59:29,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:29,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:29,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 00:59:29,830 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:29,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:29,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1799324112, now seen corresponding path program 1 times [2023-12-16 00:59:29,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:29,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813837935] [2023-12-16 00:59:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:29,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813837935] [2023-12-16 00:59:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813837935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836996983] [2023-12-16 00:59:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:29,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:29,893 INFO L87 Difference]: Start difference. First operand 45711 states and 66045 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:30,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:30,568 INFO L93 Difference]: Finished difference Result 75688 states and 109749 transitions. [2023-12-16 00:59:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:30,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-16 00:59:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:30,607 INFO L225 Difference]: With dead ends: 75688 [2023-12-16 00:59:30,608 INFO L226 Difference]: Without dead ends: 33030 [2023-12-16 00:59:30,639 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 [2023-12-16 00:59:30,640 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 58 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3152 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 [2023-12-16 00:59:30,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33030 states. [2023-12-16 00:59:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33030 to 33028. [2023-12-16 00:59:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33028 states, 33026 states have (on average 1.452007509235148) internal successors, (47954), 33027 states have internal predecessors, (47954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33028 states to 33028 states and 47954 transitions. [2023-12-16 00:59:31,508 INFO L78 Accepts]: Start accepts. Automaton has 33028 states and 47954 transitions. Word has length 88 [2023-12-16 00:59:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:31,510 INFO L495 AbstractCegarLoop]: Abstraction has 33028 states and 47954 transitions. [2023-12-16 00:59:31,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 33028 states and 47954 transitions. [2023-12-16 00:59:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-16 00:59:31,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:31,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:31,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 00:59:31,513 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:31,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1059885715, now seen corresponding path program 1 times [2023-12-16 00:59:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238948684] [2023-12-16 00:59:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:59:31,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:31,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238948684] [2023-12-16 00:59:31,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238948684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:31,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:31,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 00:59:31,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568442133] [2023-12-16 00:59:31,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:31,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:59:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:59:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:59:31,668 INFO L87 Difference]: Start difference. First operand 33028 states and 47954 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:33,127 INFO L93 Difference]: Finished difference Result 60690 states and 88281 transitions. [2023-12-16 00:59:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:59:33,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-16 00:59:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:33,198 INFO L225 Difference]: With dead ends: 60690 [2023-12-16 00:59:33,198 INFO L226 Difference]: Without dead ends: 56080 [2023-12-16 00:59:33,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:59:33,210 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8040 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8040 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:33,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8040 Valid, 3949 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:59:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56080 states. [2023-12-16 00:59:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56080 to 37636. [2023-12-16 00:59:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37636 states, 37634 states have (on average 1.4510814688845193) internal successors, (54610), 37635 states have internal predecessors, (54610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37636 states to 37636 states and 54610 transitions. [2023-12-16 00:59:34,228 INFO L78 Accepts]: Start accepts. Automaton has 37636 states and 54610 transitions. Word has length 88 [2023-12-16 00:59:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:34,228 INFO L495 AbstractCegarLoop]: Abstraction has 37636 states and 54610 transitions. [2023-12-16 00:59:34,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 37636 states and 54610 transitions. [2023-12-16 00:59:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-16 00:59:34,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:34,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:34,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 00:59:34,231 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:34,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash -192668114, now seen corresponding path program 1 times [2023-12-16 00:59:34,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:34,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381577299] [2023-12-16 00:59:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:34,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:34,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381577299] [2023-12-16 00:59:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381577299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:34,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980922919] [2023-12-16 00:59:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:34,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:34,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:34,329 INFO L87 Difference]: Start difference. First operand 37636 states and 54610 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:34,706 INFO L93 Difference]: Finished difference Result 54920 states and 79572 transitions. [2023-12-16 00:59:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-16 00:59:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:34,728 INFO L225 Difference]: With dead ends: 54920 [2023-12-16 00:59:34,729 INFO L226 Difference]: Without dead ends: 20358 [2023-12-16 00:59:34,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:34,752 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 53 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3137 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 [2023-12-16 00:59:34,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20358 states. [2023-12-16 00:59:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20358 to 20356. [2023-12-16 00:59:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20356 states, 20354 states have (on average 1.4449248305001474) internal successors, (29410), 20355 states have internal predecessors, (29410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20356 states to 20356 states and 29410 transitions. [2023-12-16 00:59:35,410 INFO L78 Accepts]: Start accepts. Automaton has 20356 states and 29410 transitions. Word has length 89 [2023-12-16 00:59:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:35,410 INFO L495 AbstractCegarLoop]: Abstraction has 20356 states and 29410 transitions. [2023-12-16 00:59:35,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 20356 states and 29410 transitions. [2023-12-16 00:59:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-16 00:59:35,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:35,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:35,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 00:59:35,412 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:35,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:35,413 INFO L85 PathProgramCache]: Analyzing trace with hash -72525939, now seen corresponding path program 1 times [2023-12-16 00:59:35,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:35,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373716259] [2023-12-16 00:59:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:35,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373716259] [2023-12-16 00:59:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373716259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:59:35,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020284047] [2023-12-16 00:59:35,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:35,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:35,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:35,465 INFO L87 Difference]: Start difference. First operand 20356 states and 29410 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:38,460 INFO L93 Difference]: Finished difference Result 26368 states and 38650 transitions. [2023-12-16 00:59:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:38,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-16 00:59:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:38,484 INFO L225 Difference]: With dead ends: 26368 [2023-12-16 00:59:38,484 INFO L226 Difference]: Without dead ends: 23362 [2023-12-16 00:59:38,491 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 [2023-12-16 00:59:38,491 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 850 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:38,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 620 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 00:59:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23362 states. [2023-12-16 00:59:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23362 to 23360. [2023-12-16 00:59:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23360 states, 23358 states have (on average 1.4124068841510404) internal successors, (32991), 23359 states have internal predecessors, (32991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23360 states to 23360 states and 32991 transitions. [2023-12-16 00:59:39,017 INFO L78 Accepts]: Start accepts. Automaton has 23360 states and 32991 transitions. Word has length 89 [2023-12-16 00:59:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:39,017 INFO L495 AbstractCegarLoop]: Abstraction has 23360 states and 32991 transitions. [2023-12-16 00:59:39,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand 23360 states and 32991 transitions. [2023-12-16 00:59:39,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-16 00:59:39,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:39,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:39,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 00:59:39,019 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:39,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 855162280, now seen corresponding path program 1 times [2023-12-16 00:59:39,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:39,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304857973] [2023-12-16 00:59:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:39,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:39,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:39,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304857973] [2023-12-16 00:59:39,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304857973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:39,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:39,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:59:39,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068975627] [2023-12-16 00:59:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:39,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:39,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:39,063 INFO L87 Difference]: Start difference. First operand 23360 states and 32991 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:41,912 INFO L93 Difference]: Finished difference Result 35380 states and 49393 transitions. [2023-12-16 00:59:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:41,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-16 00:59:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:41,946 INFO L225 Difference]: With dead ends: 35380 [2023-12-16 00:59:41,947 INFO L226 Difference]: Without dead ends: 29370 [2023-12-16 00:59:41,959 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 [2023-12-16 00:59:41,959 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 1039 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:41,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 715 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 00:59:41,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29370 states. [2023-12-16 00:59:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29370 to 29368. [2023-12-16 00:59:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29368 states, 29366 states have (on average 1.3677382006401961) internal successors, (40165), 29367 states have internal predecessors, (40165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29368 states to 29368 states and 40165 transitions. [2023-12-16 00:59:42,692 INFO L78 Accepts]: Start accepts. Automaton has 29368 states and 40165 transitions. Word has length 90 [2023-12-16 00:59:42,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:42,693 INFO L495 AbstractCegarLoop]: Abstraction has 29368 states and 40165 transitions. [2023-12-16 00:59:42,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 29368 states and 40165 transitions. [2023-12-16 00:59:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:59:42,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:42,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 00:59:42,695 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:42,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash -251569188, now seen corresponding path program 1 times [2023-12-16 00:59:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:42,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058101270] [2023-12-16 00:59:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:42,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058101270] [2023-12-16 00:59:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058101270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:42,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440276893] [2023-12-16 00:59:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:42,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:42,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:42,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:42,758 INFO L87 Difference]: Start difference. First operand 29368 states and 40165 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:42,992 INFO L93 Difference]: Finished difference Result 38012 states and 52527 transitions. [2023-12-16 00:59:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-16 00:59:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:43,014 INFO L225 Difference]: With dead ends: 38012 [2023-12-16 00:59:43,014 INFO L226 Difference]: Without dead ends: 20730 [2023-12-16 00:59:43,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:43,028 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 50 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3122 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 [2023-12-16 00:59:43,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:43,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20730 states. [2023-12-16 00:59:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20730 to 20728. [2023-12-16 00:59:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20728 states, 20726 states have (on average 1.3357618450255717) internal successors, (27685), 20727 states have internal predecessors, (27685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20728 states to 20728 states and 27685 transitions. [2023-12-16 00:59:43,470 INFO L78 Accepts]: Start accepts. Automaton has 20728 states and 27685 transitions. Word has length 91 [2023-12-16 00:59:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:43,470 INFO L495 AbstractCegarLoop]: Abstraction has 20728 states and 27685 transitions. [2023-12-16 00:59:43,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 20728 states and 27685 transitions. [2023-12-16 00:59:43,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 00:59:43,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:43,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:43,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 00:59:43,473 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:43,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:43,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1008841974, now seen corresponding path program 1 times [2023-12-16 00:59:43,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:43,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237268325] [2023-12-16 00:59:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:43,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:43,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:43,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237268325] [2023-12-16 00:59:43,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237268325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:43,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:43,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:43,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101236397] [2023-12-16 00:59:43,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:43,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:43,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:43,539 INFO L87 Difference]: Start difference. First operand 20728 states and 27685 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:43,678 INFO L93 Difference]: Finished difference Result 25052 states and 33807 transitions. [2023-12-16 00:59:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:43,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-16 00:59:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:43,695 INFO L225 Difference]: With dead ends: 25052 [2023-12-16 00:59:43,696 INFO L226 Difference]: Without dead ends: 16410 [2023-12-16 00:59:43,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:43,705 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 47 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3107 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 [2023-12-16 00:59:43,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:43,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16410 states. [2023-12-16 00:59:44,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16410 to 16408. [2023-12-16 00:59:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16408 states, 16406 states have (on average 1.3108009264903084) internal successors, (21505), 16407 states have internal predecessors, (21505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16408 states to 16408 states and 21505 transitions. [2023-12-16 00:59:44,096 INFO L78 Accepts]: Start accepts. Automaton has 16408 states and 21505 transitions. Word has length 93 [2023-12-16 00:59:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:44,096 INFO L495 AbstractCegarLoop]: Abstraction has 16408 states and 21505 transitions. [2023-12-16 00:59:44,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:44,097 INFO L276 IsEmpty]: Start isEmpty. Operand 16408 states and 21505 transitions. [2023-12-16 00:59:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-16 00:59:44,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:44,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:44,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 00:59:44,098 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:44,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2134258760, now seen corresponding path program 1 times [2023-12-16 00:59:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:44,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74053904] [2023-12-16 00:59:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:44,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:44,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74053904] [2023-12-16 00:59:44,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74053904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:44,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:44,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:44,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613448764] [2023-12-16 00:59:44,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:44,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:44,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:44,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:44,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:44,156 INFO L87 Difference]: Start difference. First operand 16408 states and 21505 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:44,245 INFO L93 Difference]: Finished difference Result 18572 states and 24537 transitions. [2023-12-16 00:59:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:44,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-16 00:59:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:44,260 INFO L225 Difference]: With dead ends: 18572 [2023-12-16 00:59:44,261 INFO L226 Difference]: Without dead ends: 14250 [2023-12-16 00:59:44,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:44,267 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 44 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3092 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 [2023-12-16 00:59:44,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3092 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:44,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14250 states. [2023-12-16 00:59:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14250 to 14248. [2023-12-16 00:59:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14248 states, 14246 states have (on average 1.2947494033412887) internal successors, (18445), 14247 states have internal predecessors, (18445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14248 states to 14248 states and 18445 transitions. [2023-12-16 00:59:44,431 INFO L78 Accepts]: Start accepts. Automaton has 14248 states and 18445 transitions. Word has length 95 [2023-12-16 00:59:44,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:44,431 INFO L495 AbstractCegarLoop]: Abstraction has 14248 states and 18445 transitions. [2023-12-16 00:59:44,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:44,432 INFO L276 IsEmpty]: Start isEmpty. Operand 14248 states and 18445 transitions. [2023-12-16 00:59:44,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-16 00:59:44,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:44,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:44,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 00:59:44,433 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:44,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:44,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1081426458, now seen corresponding path program 1 times [2023-12-16 00:59:44,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:44,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238544131] [2023-12-16 00:59:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:44,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238544131] [2023-12-16 00:59:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238544131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:59:44,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:59:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:59:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126088140] [2023-12-16 00:59:44,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:59:44,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:59:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:59:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:44,488 INFO L87 Difference]: Start difference. First operand 14248 states and 18445 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:44,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:44,558 INFO L93 Difference]: Finished difference Result 15332 states and 19947 transitions. [2023-12-16 00:59:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:59:44,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-16 00:59:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:44,572 INFO L225 Difference]: With dead ends: 15332 [2023-12-16 00:59:44,572 INFO L226 Difference]: Without dead ends: 13170 [2023-12-16 00:59:44,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:59:44,578 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 41 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3077 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 [2023-12-16 00:59:44,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3077 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:59:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13170 states. [2023-12-16 00:59:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13170 to 13168. [2023-12-16 00:59:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13168 states, 13166 states have (on average 1.2858878930578763) internal successors, (16930), 13167 states have internal predecessors, (16930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13168 states to 13168 states and 16930 transitions. [2023-12-16 00:59:44,816 INFO L78 Accepts]: Start accepts. Automaton has 13168 states and 16930 transitions. Word has length 97 [2023-12-16 00:59:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:44,817 INFO L495 AbstractCegarLoop]: Abstraction has 13168 states and 16930 transitions. [2023-12-16 00:59:44,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:44,817 INFO L276 IsEmpty]: Start isEmpty. Operand 13168 states and 16930 transitions. [2023-12-16 00:59:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 00:59:44,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:44,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:44,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 00:59:44,818 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:44,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:44,819 INFO L85 PathProgramCache]: Analyzing trace with hash -905969260, now seen corresponding path program 1 times [2023-12-16 00:59:44,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:44,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816940073] [2023-12-16 00:59:44,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:44,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:45,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:45,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816940073] [2023-12-16 00:59:45,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816940073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:59:45,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868904685] [2023-12-16 00:59:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:45,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:59:45,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:59:45,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:59:45,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:59:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:45,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:59:45,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:59:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:59:45,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:59:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:59:46,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868904685] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:59:46,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:59:46,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-16 00:59:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769019914] [2023-12-16 00:59:46,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:59:46,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 00:59:46,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 00:59:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:59:46,124 INFO L87 Difference]: Start difference. First operand 13168 states and 16930 transitions. Second operand has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:48,819 INFO L93 Difference]: Finished difference Result 21999 states and 28872 transitions. [2023-12-16 00:59:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 00:59:48,819 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 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 99 [2023-12-16 00:59:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:48,843 INFO L225 Difference]: With dead ends: 21999 [2023-12-16 00:59:48,843 INFO L226 Difference]: Without dead ends: 20917 [2023-12-16 00:59:48,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 00:59:48,851 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 13988 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13988 SdHoareTripleChecker+Valid, 6487 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:48,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13988 Valid, 6487 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 00:59:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20917 states. [2023-12-16 00:59:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20917 to 20573. [2023-12-16 00:59:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20573 states, 20571 states have (on average 1.2934227796412425) internal successors, (26607), 20572 states have internal predecessors, (26607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20573 states to 20573 states and 26607 transitions. [2023-12-16 00:59:49,200 INFO L78 Accepts]: Start accepts. Automaton has 20573 states and 26607 transitions. Word has length 99 [2023-12-16 00:59:49,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:49,200 INFO L495 AbstractCegarLoop]: Abstraction has 20573 states and 26607 transitions. [2023-12-16 00:59:49,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 20573 states and 26607 transitions. [2023-12-16 00:59:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 00:59:49,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:49,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:49,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:59:49,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-16 00:59:49,407 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:49,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash -866777489, now seen corresponding path program 1 times [2023-12-16 00:59:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:49,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512673847] [2023-12-16 00:59:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:49,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:49,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:49,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512673847] [2023-12-16 00:59:49,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512673847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:59:49,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248623447] [2023-12-16 00:59:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:49,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:59:49,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:59:49,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:59:49,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:59:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:49,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:59:49,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:59:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:50,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:59:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:51,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248623447] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:59:51,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:59:51,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-16 00:59:51,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970171369] [2023-12-16 00:59:51,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:59:51,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 00:59:51,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:51,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 00:59:51,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-16 00:59:51,402 INFO L87 Difference]: Start difference. First operand 20573 states and 26607 transitions. Second operand has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:52,519 INFO L93 Difference]: Finished difference Result 35571 states and 46043 transitions. [2023-12-16 00:59:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 00:59:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 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 100 [2023-12-16 00:59:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:52,555 INFO L225 Difference]: With dead ends: 35571 [2023-12-16 00:59:52,556 INFO L226 Difference]: Without dead ends: 27404 [2023-12-16 00:59:52,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 00:59:52,564 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 13661 mSDsluCounter, 7983 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13661 SdHoareTripleChecker+Valid, 9508 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:52,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13661 Valid, 9508 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 00:59:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27404 states. [2023-12-16 00:59:53,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27404 to 26888. [2023-12-16 00:59:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26888 states, 26886 states have (on average 1.2906717250613702) internal successors, (34701), 26887 states have internal predecessors, (34701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26888 states to 26888 states and 34701 transitions. [2023-12-16 00:59:53,142 INFO L78 Accepts]: Start accepts. Automaton has 26888 states and 34701 transitions. Word has length 100 [2023-12-16 00:59:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:53,142 INFO L495 AbstractCegarLoop]: Abstraction has 26888 states and 34701 transitions. [2023-12-16 00:59:53,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 26888 states and 34701 transitions. [2023-12-16 00:59:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 00:59:53,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:53,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:53,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:59:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:59:53,349 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:53,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:53,350 INFO L85 PathProgramCache]: Analyzing trace with hash -233798289, now seen corresponding path program 1 times [2023-12-16 00:59:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:53,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381527941] [2023-12-16 00:59:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:54,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:54,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381527941] [2023-12-16 00:59:54,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381527941] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:59:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477636473] [2023-12-16 00:59:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:54,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:59:54,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:59:54,047 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) [2023-12-16 00:59:54,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:59:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:54,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 00:59:54,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:59:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:54,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:59:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477636473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:59:55,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:59:55,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2023-12-16 00:59:55,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375120578] [2023-12-16 00:59:55,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:59:55,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 00:59:55,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:59:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 00:59:55,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-16 00:59:55,237 INFO L87 Difference]: Start difference. First operand 26888 states and 34701 transitions. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:59:56,185 INFO L93 Difference]: Finished difference Result 40033 states and 51643 transitions. [2023-12-16 00:59:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:59:56,186 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 100 [2023-12-16 00:59:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:59:56,228 INFO L225 Difference]: With dead ends: 40033 [2023-12-16 00:59:56,228 INFO L226 Difference]: Without dead ends: 27924 [2023-12-16 00:59:56,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 00:59:56,245 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 10770 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10770 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:59:56,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10770 Valid, 7880 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 00:59:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27924 states. [2023-12-16 00:59:56,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27924 to 25856. [2023-12-16 00:59:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25856 states, 25854 states have (on average 1.2783321729713004) internal successors, (33050), 25855 states have internal predecessors, (33050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25856 states to 25856 states and 33050 transitions. [2023-12-16 00:59:56,984 INFO L78 Accepts]: Start accepts. Automaton has 25856 states and 33050 transitions. Word has length 100 [2023-12-16 00:59:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:59:56,984 INFO L495 AbstractCegarLoop]: Abstraction has 25856 states and 33050 transitions. [2023-12-16 00:59:56,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:59:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 25856 states and 33050 transitions. [2023-12-16 00:59:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 00:59:56,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:59:56,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:59:56,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:59:57,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:59:57,194 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:59:57,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:59:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash -756402499, now seen corresponding path program 1 times [2023-12-16 00:59:57,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:59:57,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111149957] [2023-12-16 00:59:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:57,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:59:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:59:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111149957] [2023-12-16 00:59:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111149957] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:59:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150376035] [2023-12-16 00:59:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:59:57,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:59:57,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:59:57,492 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) [2023-12-16 00:59:57,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:59:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:59:57,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:59:57,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:59:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:59:58,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 00:59:58,594 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:59:58,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:59:58,617 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:59:58,618 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:59:58,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:59:58,800 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 101 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. [2023-12-16 00:59:58,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:59:58,806 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] [2023-12-16 00:59:58,810 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:59:58,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:59:58 BoogieIcfgContainer [2023-12-16 00:59:58,814 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:59:58,814 INFO L158 Benchmark]: Toolchain (without parser) took 56850.39ms. Allocated memory was 334.5MB in the beginning and 5.6GB in the end (delta: 5.3GB). Free memory was 269.1MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-16 00:59:58,814 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 215.0MB. Free memory is still 166.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:59:58,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1248.73ms. Allocated memory is still 334.5MB. Free memory was 268.8MB in the beginning and 153.4MB in the end (delta: 115.4MB). Peak memory consumption was 116.0MB. Max. memory is 8.0GB. [2023-12-16 00:59:58,818 INFO L158 Benchmark]: Boogie Procedure Inliner took 547.87ms. Allocated memory was 334.5MB in the beginning and 669.0MB in the end (delta: 334.5MB). Free memory was 153.4MB in the beginning and 579.6MB in the end (delta: -426.2MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. [2023-12-16 00:59:58,818 INFO L158 Benchmark]: Boogie Preprocessor took 525.24ms. Allocated memory is still 669.0MB. Free memory was 579.6MB in the beginning and 543.6MB in the end (delta: 36.1MB). Peak memory consumption was 62.3MB. Max. memory is 8.0GB. [2023-12-16 00:59:58,818 INFO L158 Benchmark]: RCFGBuilder took 3222.29ms. Allocated memory was 669.0MB in the beginning and 1.0GB in the end (delta: 353.4MB). Free memory was 543.6MB in the beginning and 780.4MB in the end (delta: -236.9MB). Peak memory consumption was 166.1MB. Max. memory is 8.0GB. [2023-12-16 00:59:58,818 INFO L158 Benchmark]: TraceAbstraction took 51299.91ms. Allocated memory was 1.0GB in the beginning and 5.6GB in the end (delta: 4.6GB). Free memory was 779.9MB in the beginning and 3.6GB in the end (delta: -2.8GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-16 00:59:58,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 215.0MB. Free memory is still 166.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1248.73ms. Allocated memory is still 334.5MB. Free memory was 268.8MB in the beginning and 153.4MB in the end (delta: 115.4MB). Peak memory consumption was 116.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 547.87ms. Allocated memory was 334.5MB in the beginning and 669.0MB in the end (delta: 334.5MB). Free memory was 153.4MB in the beginning and 579.6MB in the end (delta: -426.2MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 525.24ms. Allocated memory is still 669.0MB. Free memory was 579.6MB in the beginning and 543.6MB in the end (delta: 36.1MB). Peak memory consumption was 62.3MB. Max. memory is 8.0GB. * RCFGBuilder took 3222.29ms. Allocated memory was 669.0MB in the beginning and 1.0GB in the end (delta: 353.4MB). Free memory was 543.6MB in the beginning and 780.4MB in the end (delta: -236.9MB). Peak memory consumption was 166.1MB. Max. memory is 8.0GB. * TraceAbstraction took 51299.91ms. Allocated memory was 1.0GB in the beginning and 5.6GB in the end (delta: 4.6GB). Free memory was 779.9MB in the beginning and 3.6GB in the end (delta: -2.8GB). Peak memory consumption was 1.7GB. 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: 514]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 514). Cancelled while NwaCegarLoop was analyzing trace of length 101 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. - TimeoutResultAtElement [Line: 577]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 577). Cancelled while NwaCegarLoop was analyzing trace of length 101 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 851 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 51.2s, OverallIterations: 32, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 27.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 112753 SdHoareTripleChecker+Valid, 12.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112753 mSDsluCounter, 96975 SdHoareTripleChecker+Invalid, 10.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50851 mSDsCounter, 2667 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12754 IncrementalHoareTripleChecker+Invalid, 15421 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2667 mSolverCounterUnsat, 46124 mSDtfsCounter, 12754 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 868 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45711occurred in iteration=19, InterpolantAutomatonStates: 208, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 146696 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 2640 NumberOfCodeBlocks, 2640 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2902 ConstructedInterpolants, 0 QuantifiedInterpolants, 21997 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1425 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 37 InterpolantComputations, 28 PerfectInterpolantSequences, 322/402 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