/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 03:51:24,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 03:51:24,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 03:51:24,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 03:51:24,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 03:51:24,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 03:51:24,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 03:51:24,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 03:51:24,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 03:51:24,230 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 03:51:24,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 03:51:24,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 03:51:24,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 03:51:24,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 03:51:24,232 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 03:51:24,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 03:51:24,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 03:51:24,232 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 03:51:24,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 03:51:24,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 03:51:24,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 03:51:24,233 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 03:51:24,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 03:51:24,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 03:51:24,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 03:51:24,234 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 03:51:24,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 03:51:24,234 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 03:51:24,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 03:51:24,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 03:51:24,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 03:51:24,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 03:51:24,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:51:24,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 03:51:24,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 03:51:24,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 03:51:24,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 03:51:24,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 03:51:24,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 03:51:24,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 03:51:24,237 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 03:51:24,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 03:51:24,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 03:51:24,237 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 03:51:24,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 03:51:24,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 03:51:24,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 03:51:24,493 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 03:51:24,494 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 03:51:24,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label06.c [2023-12-19 03:51:25,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 03:51:26,219 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 03:51:26,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label06.c [2023-12-19 03:51:26,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c84f491c/bb8ae3ab26ee42c7ba1325a1e96bb556/FLAG008e5482b [2023-12-19 03:51:26,271 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c84f491c/bb8ae3ab26ee42c7ba1325a1e96bb556 [2023-12-19 03:51:26,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 03:51:26,274 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 03:51:26,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 03:51:26,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 03:51:26,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 03:51:26,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:51:26" (1/1) ... [2023-12-19 03:51:26,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324bdc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:26, skipping insertion in model container [2023-12-19 03:51:26,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:51:26" (1/1) ... [2023-12-19 03:51:26,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 03:51:26,676 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label06.c[3786,3799] [2023-12-19 03:51:27,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:51:27,397 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 03:51:27,419 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label06.c[3786,3799] [2023-12-19 03:51:27,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:51:27,837 INFO L206 MainTranslator]: Completed translation [2023-12-19 03:51:27,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27 WrapperNode [2023-12-19 03:51:27,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 03:51:27,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 03:51:27,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 03:51:27,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 03:51:27,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:27,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:28,512 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 03:51:28,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 03:51:28,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 03:51:28,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 03:51:28,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 03:51:28,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:28,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:28,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:28,846 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 03:51:28,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:28,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:29,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:29,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:29,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:29,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:29,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 03:51:29,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 03:51:29,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 03:51:29,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 03:51:29,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (1/1) ... [2023-12-19 03:51:29,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:51:29,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:51:29,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 03:51:29,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 03:51:29,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 03:51:29,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 03:51:29,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 03:51:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 03:51:29,395 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 03:51:29,397 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 03:51:33,302 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 03:51:33,365 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 03:51:33,365 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 03:51:33,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:51:33 BoogieIcfgContainer [2023-12-19 03:51:33,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 03:51:33,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 03:51:33,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 03:51:33,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 03:51:33,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:51:26" (1/3) ... [2023-12-19 03:51:33,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8072e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:51:33, skipping insertion in model container [2023-12-19 03:51:33,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:27" (2/3) ... [2023-12-19 03:51:33,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8072e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:51:33, skipping insertion in model container [2023-12-19 03:51:33,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:51:33" (3/3) ... [2023-12-19 03:51:33,372 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label06.c [2023-12-19 03:51:33,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 03:51:33,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 03:51:33,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 03:51:33,450 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;@58224af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 03:51:33,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 03:51:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 03:51:33,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:33,467 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] [2023-12-19 03:51:33,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:33,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1188912401, now seen corresponding path program 1 times [2023-12-19 03:51:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:33,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574322943] [2023-12-19 03:51:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:33,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:33,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574322943] [2023-12-19 03:51:33,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574322943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:33,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:33,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:33,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024538438] [2023-12-19 03:51:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 03:51:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 03:51:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:51:33,833 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:33,987 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 03:51:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 03:51:34,039 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-19 03:51:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:34,069 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 03:51:34,069 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 03:51:34,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:51:34,085 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:34,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 03:51:34,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 03:51:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 03:51:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 03:51:34,253 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 24 [2023-12-19 03:51:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:34,253 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 03:51:34,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:34,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 03:51:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 03:51:34,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:34,254 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] [2023-12-19 03:51:34,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 03:51:34,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:34,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1416385584, now seen corresponding path program 1 times [2023-12-19 03:51:34,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:34,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211997617] [2023-12-19 03:51:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:34,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:34,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:34,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211997617] [2023-12-19 03:51:34,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211997617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:34,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:34,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:34,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294350519] [2023-12-19 03:51:34,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:34,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:34,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:34,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:34,370 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:38,490 INFO L93 Difference]: Finished difference Result 2976 states and 5471 transitions. [2023-12-19 03:51:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-19 03:51:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:38,500 INFO L225 Difference]: With dead ends: 2976 [2023-12-19 03:51:38,500 INFO L226 Difference]: Without dead ends: 1943 [2023-12-19 03:51:38,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:38,504 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 930 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:38,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 538 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 03:51:38,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-12-19 03:51:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1872. [2023-12-19 03:51:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.7397113842864778) internal successors, (3255), 1871 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3255 transitions. [2023-12-19 03:51:38,564 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3255 transitions. Word has length 24 [2023-12-19 03:51:38,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:38,564 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 3255 transitions. [2023-12-19 03:51:38,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3255 transitions. [2023-12-19 03:51:38,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 03:51:38,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:38,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:38,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 03:51:38,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:38,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash -780158661, now seen corresponding path program 1 times [2023-12-19 03:51:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776498720] [2023-12-19 03:51:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:38,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:38,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776498720] [2023-12-19 03:51:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776498720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509892184] [2023-12-19 03:51:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:38,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:38,878 INFO L87 Difference]: Start difference. First operand 1872 states and 3255 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) [2023-12-19 03:51:41,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:41,832 INFO L93 Difference]: Finished difference Result 5350 states and 9368 transitions. [2023-12-19 03:51:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:41,833 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 [2023-12-19 03:51:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:41,843 INFO L225 Difference]: With dead ends: 5350 [2023-12-19 03:51:41,843 INFO L226 Difference]: Without dead ends: 3479 [2023-12-19 03:51:41,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:41,847 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:41,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1077 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:51:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-12-19 03:51:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3478. [2023-12-19 03:51:41,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 1.5188380788035662) internal successors, (5281), 3477 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5281 transitions. [2023-12-19 03:51:41,900 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5281 transitions. Word has length 89 [2023-12-19 03:51:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:41,900 INFO L495 AbstractCegarLoop]: Abstraction has 3478 states and 5281 transitions. [2023-12-19 03:51:41,901 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) [2023-12-19 03:51:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5281 transitions. [2023-12-19 03:51:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 03:51:41,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:41,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:41,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 03:51:41,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:41,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2089709408, now seen corresponding path program 1 times [2023-12-19 03:51:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:41,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399205365] [2023-12-19 03:51:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:41,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:42,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399205365] [2023-12-19 03:51:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399205365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130911854] [2023-12-19 03:51:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:42,004 INFO L87 Difference]: Start difference. First operand 3478 states and 5281 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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) [2023-12-19 03:51:45,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:45,164 INFO L93 Difference]: Finished difference Result 10141 states and 15437 transitions. [2023-12-19 03:51:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:45,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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 [2023-12-19 03:51:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:45,185 INFO L225 Difference]: With dead ends: 10141 [2023-12-19 03:51:45,185 INFO L226 Difference]: Without dead ends: 6664 [2023-12-19 03:51:45,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:45,198 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:45,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 875 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:51:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2023-12-19 03:51:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 6656. [2023-12-19 03:51:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6656 states, 6655 states have (on average 1.3729526671675432) internal successors, (9137), 6655 states have internal predecessors, (9137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 9137 transitions. [2023-12-19 03:51:45,301 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 9137 transitions. Word has length 91 [2023-12-19 03:51:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:45,302 INFO L495 AbstractCegarLoop]: Abstraction has 6656 states and 9137 transitions. [2023-12-19 03:51:45,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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) [2023-12-19 03:51:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 9137 transitions. [2023-12-19 03:51:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 03:51:45,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:45,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:45,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 03:51:45,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:45,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:45,307 INFO L85 PathProgramCache]: Analyzing trace with hash 363661455, now seen corresponding path program 1 times [2023-12-19 03:51:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:45,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389238895] [2023-12-19 03:51:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:45,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:45,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389238895] [2023-12-19 03:51:45,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389238895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:45,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:45,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047937666] [2023-12-19 03:51:45,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:45,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:45,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:45,472 INFO L87 Difference]: Start difference. First operand 6656 states and 9137 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 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) [2023-12-19 03:51:48,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:48,510 INFO L93 Difference]: Finished difference Result 19636 states and 26968 transitions. [2023-12-19 03:51:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:48,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 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 [2023-12-19 03:51:48,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:48,610 INFO L225 Difference]: With dead ends: 19636 [2023-12-19 03:51:48,610 INFO L226 Difference]: Without dead ends: 12981 [2023-12-19 03:51:48,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:48,621 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:48,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1161 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:51:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2023-12-19 03:51:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 12174. [2023-12-19 03:51:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12173 states have (on average 1.2529368274049124) internal successors, (15252), 12173 states have internal predecessors, (15252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 15252 transitions. [2023-12-19 03:51:48,788 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 15252 transitions. Word has length 97 [2023-12-19 03:51:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:48,789 INFO L495 AbstractCegarLoop]: Abstraction has 12174 states and 15252 transitions. [2023-12-19 03:51:48,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 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) [2023-12-19 03:51:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 15252 transitions. [2023-12-19 03:51:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 03:51:48,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:48,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:48,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 03:51:48,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:48,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:48,792 INFO L85 PathProgramCache]: Analyzing trace with hash -566836361, now seen corresponding path program 1 times [2023-12-19 03:51:48,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:48,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798749686] [2023-12-19 03:51:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:48,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 03:51:48,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798749686] [2023-12-19 03:51:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798749686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:48,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:48,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:48,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542825697] [2023-12-19 03:51:48,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:48,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:48,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:48,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:48,900 INFO L87 Difference]: Start difference. First operand 12174 states and 15252 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:52,155 INFO L93 Difference]: Finished difference Result 36202 states and 45330 transitions. [2023-12-19 03:51:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:52,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-19 03:51:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:52,191 INFO L225 Difference]: With dead ends: 36202 [2023-12-19 03:51:52,191 INFO L226 Difference]: Without dead ends: 24029 [2023-12-19 03:51:52,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:52,206 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 914 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:52,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 697 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:51:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24029 states. [2023-12-19 03:51:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24029 to 24022. [2023-12-19 03:51:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24022 states, 24021 states have (on average 1.21810082844178) internal successors, (29260), 24021 states have internal predecessors, (29260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 29260 transitions. [2023-12-19 03:51:52,495 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 29260 transitions. Word has length 113 [2023-12-19 03:51:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:52,496 INFO L495 AbstractCegarLoop]: Abstraction has 24022 states and 29260 transitions. [2023-12-19 03:51:52,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 29260 transitions. [2023-12-19 03:51:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 03:51:52,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:52,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:52,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 03:51:52,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:52,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2025474773, now seen corresponding path program 1 times [2023-12-19 03:51:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656921614] [2023-12-19 03:51:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:52,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656921614] [2023-12-19 03:51:52,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656921614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:52,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:52,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:52,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021836260] [2023-12-19 03:51:52,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:52,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:52,693 INFO L87 Difference]: Start difference. First operand 24022 states and 29260 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:55,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:55,723 INFO L93 Difference]: Finished difference Result 42533 states and 52580 transitions. [2023-12-19 03:51:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:55,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2023-12-19 03:51:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:55,759 INFO L225 Difference]: With dead ends: 42533 [2023-12-19 03:51:55,759 INFO L226 Difference]: Without dead ends: 24031 [2023-12-19 03:51:55,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:55,780 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:55,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1209 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:51:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24031 states. [2023-12-19 03:51:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24031 to 24022. [2023-12-19 03:51:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24022 states, 24021 states have (on average 1.2166437700345532) internal successors, (29225), 24021 states have internal predecessors, (29225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 29225 transitions. [2023-12-19 03:51:56,029 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 29225 transitions. Word has length 140 [2023-12-19 03:51:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:56,030 INFO L495 AbstractCegarLoop]: Abstraction has 24022 states and 29225 transitions. [2023-12-19 03:51:56,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 29225 transitions. [2023-12-19 03:51:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-19 03:51:56,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:56,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:56,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 03:51:56,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:56,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1055785391, now seen corresponding path program 1 times [2023-12-19 03:51:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:56,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961520339] [2023-12-19 03:51:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:56,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:56,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:56,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961520339] [2023-12-19 03:51:56,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961520339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:56,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:56,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:56,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073522043] [2023-12-19 03:51:56,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:56,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:56,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:56,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:56,157 INFO L87 Difference]: Start difference. First operand 24022 states and 29225 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:59,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:59,598 INFO L93 Difference]: Finished difference Result 67708 states and 83084 transitions. [2023-12-19 03:51:59,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:59,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2023-12-19 03:51:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:59,667 INFO L225 Difference]: With dead ends: 67708 [2023-12-19 03:51:59,667 INFO L226 Difference]: Without dead ends: 43687 [2023-12-19 03:51:59,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:59,699 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 841 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:59,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1983 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 03:51:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43687 states. [2023-12-19 03:52:00,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43687 to 42894. [2023-12-19 03:52:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42894 states, 42893 states have (on average 1.1763691045158884) internal successors, (50458), 42893 states have internal predecessors, (50458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42894 states to 42894 states and 50458 transitions. [2023-12-19 03:52:00,340 INFO L78 Accepts]: Start accepts. Automaton has 42894 states and 50458 transitions. Word has length 238 [2023-12-19 03:52:00,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:00,341 INFO L495 AbstractCegarLoop]: Abstraction has 42894 states and 50458 transitions. [2023-12-19 03:52:00,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:00,341 INFO L276 IsEmpty]: Start isEmpty. Operand 42894 states and 50458 transitions. [2023-12-19 03:52:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-19 03:52:00,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:00,351 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:52:00,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 03:52:00,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:00,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:00,352 INFO L85 PathProgramCache]: Analyzing trace with hash -294493016, now seen corresponding path program 1 times [2023-12-19 03:52:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:00,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504368019] [2023-12-19 03:52:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:52:00,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504368019] [2023-12-19 03:52:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504368019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:00,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:52:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518857847] [2023-12-19 03:52:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:00,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:00,692 INFO L87 Difference]: Start difference. First operand 42894 states and 50458 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:03,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:03,666 INFO L93 Difference]: Finished difference Result 85000 states and 100118 transitions. [2023-12-19 03:52:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:03,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 253 [2023-12-19 03:52:03,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:03,791 INFO L225 Difference]: With dead ends: 85000 [2023-12-19 03:52:03,791 INFO L226 Difference]: Without dead ends: 42894 [2023-12-19 03:52:03,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:03,830 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:03,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:52:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42894 states. [2023-12-19 03:52:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42894 to 42894. [2023-12-19 03:52:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42894 states, 42893 states have (on average 1.1762525353787332) internal successors, (50453), 42893 states have internal predecessors, (50453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42894 states to 42894 states and 50453 transitions. [2023-12-19 03:52:04,302 INFO L78 Accepts]: Start accepts. Automaton has 42894 states and 50453 transitions. Word has length 253 [2023-12-19 03:52:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:04,302 INFO L495 AbstractCegarLoop]: Abstraction has 42894 states and 50453 transitions. [2023-12-19 03:52:04,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 42894 states and 50453 transitions. [2023-12-19 03:52:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-19 03:52:04,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:04,306 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:52:04,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 03:52:04,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:04,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash 838600543, now seen corresponding path program 1 times [2023-12-19 03:52:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:04,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743023796] [2023-12-19 03:52:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:04,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 03:52:04,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743023796] [2023-12-19 03:52:04,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743023796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:04,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:04,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641958032] [2023-12-19 03:52:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:04,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:04,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:04,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:04,436 INFO L87 Difference]: Start difference. First operand 42894 states and 50453 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:08,585 INFO L93 Difference]: Finished difference Result 105472 states and 126162 transitions. [2023-12-19 03:52:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:08,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2023-12-19 03:52:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:08,721 INFO L225 Difference]: With dead ends: 105472 [2023-12-19 03:52:08,721 INFO L226 Difference]: Without dead ends: 63366 [2023-12-19 03:52:08,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:08,772 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 882 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:08,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 03:52:08,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63366 states. [2023-12-19 03:52:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63366 to 60995. [2023-12-19 03:52:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60995 states, 60994 states have (on average 1.165950749254025) internal successors, (71116), 60994 states have internal predecessors, (71116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60995 states to 60995 states and 71116 transitions. [2023-12-19 03:52:09,742 INFO L78 Accepts]: Start accepts. Automaton has 60995 states and 71116 transitions. Word has length 260 [2023-12-19 03:52:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:09,742 INFO L495 AbstractCegarLoop]: Abstraction has 60995 states and 71116 transitions. [2023-12-19 03:52:09,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 60995 states and 71116 transitions. [2023-12-19 03:52:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-19 03:52:09,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:09,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:09,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 03:52:09,746 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:09,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:09,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1179560973, now seen corresponding path program 1 times [2023-12-19 03:52:09,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:09,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902963332] [2023-12-19 03:52:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:09,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 45 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:52:10,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:10,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902963332] [2023-12-19 03:52:10,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902963332] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:10,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416448554] [2023-12-19 03:52:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:10,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:10,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:10,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:52:10,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 03:52:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:10,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:52:10,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:52:11,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:11,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416448554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:11,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:11,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:52:11,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363593742] [2023-12-19 03:52:11,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:11,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:11,026 INFO L87 Difference]: Start difference. First operand 60995 states and 71116 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:14,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:14,265 INFO L93 Difference]: Finished difference Result 121200 states and 141438 transitions. [2023-12-19 03:52:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:14,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 265 [2023-12-19 03:52:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:14,348 INFO L225 Difference]: With dead ends: 121200 [2023-12-19 03:52:14,348 INFO L226 Difference]: Without dead ends: 60993 [2023-12-19 03:52:14,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:14,381 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 1182 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:14,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1436 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:52:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60993 states. [2023-12-19 03:52:14,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60993 to 60992. [2023-12-19 03:52:14,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60992 states, 60991 states have (on average 1.1283959928514042) internal successors, (68822), 60991 states have internal predecessors, (68822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60992 states to 60992 states and 68822 transitions. [2023-12-19 03:52:15,066 INFO L78 Accepts]: Start accepts. Automaton has 60992 states and 68822 transitions. Word has length 265 [2023-12-19 03:52:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:15,067 INFO L495 AbstractCegarLoop]: Abstraction has 60992 states and 68822 transitions. [2023-12-19 03:52:15,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 60992 states and 68822 transitions. [2023-12-19 03:52:15,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-19 03:52:15,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:15,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:15,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 03:52:15,275 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,SelfDestructingSolverStorable10 [2023-12-19 03:52:15,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:15,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash -388182378, now seen corresponding path program 1 times [2023-12-19 03:52:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088907942] [2023-12-19 03:52:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-19 03:52:16,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:16,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088907942] [2023-12-19 03:52:16,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088907942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:16,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224534215] [2023-12-19 03:52:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:16,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:16,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:16,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:52:16,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 03:52:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:16,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:52:16,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-19 03:52:16,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:16,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224534215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:16,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:16,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-19 03:52:16,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527258336] [2023-12-19 03:52:16,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:16,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:16,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:16,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:16,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:52:16,222 INFO L87 Difference]: Start difference. First operand 60992 states and 68822 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:19,228 INFO L93 Difference]: Finished difference Result 121187 states and 136843 transitions. [2023-12-19 03:52:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:19,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 315 [2023-12-19 03:52:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:19,300 INFO L225 Difference]: With dead ends: 121187 [2023-12-19 03:52:19,301 INFO L226 Difference]: Without dead ends: 60983 [2023-12-19 03:52:19,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:52:19,333 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1114 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:19,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 819 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:52:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60983 states. [2023-12-19 03:52:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60983 to 60982. [2023-12-19 03:52:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60982 states, 60981 states have (on average 1.0927174037815057) internal successors, (66635), 60981 states have internal predecessors, (66635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60982 states to 60982 states and 66635 transitions. [2023-12-19 03:52:20,111 INFO L78 Accepts]: Start accepts. Automaton has 60982 states and 66635 transitions. Word has length 315 [2023-12-19 03:52:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:20,112 INFO L495 AbstractCegarLoop]: Abstraction has 60982 states and 66635 transitions. [2023-12-19 03:52:20,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 60982 states and 66635 transitions. [2023-12-19 03:52:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-12-19 03:52:20,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:20,117 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:20,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 03:52:20,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 03:52:20,322 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:20,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:20,323 INFO L85 PathProgramCache]: Analyzing trace with hash -149077708, now seen corresponding path program 1 times [2023-12-19 03:52:20,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:20,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228937942] [2023-12-19 03:52:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:20,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-12-19 03:52:20,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:20,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228937942] [2023-12-19 03:52:20,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228937942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:20,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:20,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:20,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810813823] [2023-12-19 03:52:20,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:20,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:20,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:20,739 INFO L87 Difference]: Start difference. First operand 60982 states and 66635 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:24,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:24,798 INFO L93 Difference]: Finished difference Result 151202 states and 165613 transitions. [2023-12-19 03:52:24,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:24,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 353 [2023-12-19 03:52:24,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:24,921 INFO L225 Difference]: With dead ends: 151202 [2023-12-19 03:52:24,921 INFO L226 Difference]: Without dead ends: 91008 [2023-12-19 03:52:24,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:24,949 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 970 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:24,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 558 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 03:52:25,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91008 states. [2023-12-19 03:52:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91008 to 87765. [2023-12-19 03:52:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87765 states, 87764 states have (on average 1.09688482749191) internal successors, (96267), 87764 states have internal predecessors, (96267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87765 states to 87765 states and 96267 transitions. [2023-12-19 03:52:26,190 INFO L78 Accepts]: Start accepts. Automaton has 87765 states and 96267 transitions. Word has length 353 [2023-12-19 03:52:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:26,190 INFO L495 AbstractCegarLoop]: Abstraction has 87765 states and 96267 transitions. [2023-12-19 03:52:26,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 87765 states and 96267 transitions. [2023-12-19 03:52:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-19 03:52:26,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:26,229 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-19 03:52:26,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 03:52:26,230 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:26,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:26,230 INFO L85 PathProgramCache]: Analyzing trace with hash 589637002, now seen corresponding path program 1 times [2023-12-19 03:52:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:26,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172091945] [2023-12-19 03:52:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-19 03:52:26,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:26,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172091945] [2023-12-19 03:52:26,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172091945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:26,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:26,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:26,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634234168] [2023-12-19 03:52:26,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:26,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:26,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:26,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:26,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:26,719 INFO L87 Difference]: Start difference. First operand 87765 states and 96267 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:30,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:30,961 INFO L93 Difference]: Finished difference Result 203086 states and 224427 transitions. [2023-12-19 03:52:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:30,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 427 [2023-12-19 03:52:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:31,200 INFO L225 Difference]: With dead ends: 203086 [2023-12-19 03:52:31,201 INFO L226 Difference]: Without dead ends: 116109 [2023-12-19 03:52:31,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:31,267 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 952 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:31,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 760 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 03:52:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116109 states. [2023-12-19 03:52:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116109 to 114520. [2023-12-19 03:52:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114520 states, 114519 states have (on average 1.09937215658537) internal successors, (125899), 114519 states have internal predecessors, (125899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114520 states to 114520 states and 125899 transitions. [2023-12-19 03:52:32,990 INFO L78 Accepts]: Start accepts. Automaton has 114520 states and 125899 transitions. Word has length 427 [2023-12-19 03:52:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:32,990 INFO L495 AbstractCegarLoop]: Abstraction has 114520 states and 125899 transitions. [2023-12-19 03:52:32,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:32,991 INFO L276 IsEmpty]: Start isEmpty. Operand 114520 states and 125899 transitions. [2023-12-19 03:52:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-19 03:52:33,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:33,003 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:52:33,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 03:52:33,003 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:33,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:33,003 INFO L85 PathProgramCache]: Analyzing trace with hash -626182996, now seen corresponding path program 1 times [2023-12-19 03:52:33,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:33,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898485979] [2023-12-19 03:52:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:33,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 286 proven. 110 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 03:52:34,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:34,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898485979] [2023-12-19 03:52:34,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898485979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:34,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533668209] [2023-12-19 03:52:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:34,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:34,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:34,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:52:34,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 03:52:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:34,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:52:34,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-19 03:52:34,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533668209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:34,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:34,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 03:52:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003264946] [2023-12-19 03:52:34,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:34,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:34,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:34,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:34,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 03:52:34,568 INFO L87 Difference]: Start difference. First operand 114520 states and 125899 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:38,103 INFO L93 Difference]: Finished difference Result 229829 states and 252597 transitions. [2023-12-19 03:52:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:38,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 440 [2023-12-19 03:52:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:38,279 INFO L225 Difference]: With dead ends: 229829 [2023-12-19 03:52:38,279 INFO L226 Difference]: Without dead ends: 116097 [2023-12-19 03:52:38,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 03:52:38,686 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 1013 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:38,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1498 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:52:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116097 states. [2023-12-19 03:52:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116097 to 114511. [2023-12-19 03:52:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114511 states, 114510 states have (on average 1.0736616889354642) internal successors, (122945), 114510 states have internal predecessors, (122945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114511 states to 114511 states and 122945 transitions. [2023-12-19 03:52:40,202 INFO L78 Accepts]: Start accepts. Automaton has 114511 states and 122945 transitions. Word has length 440 [2023-12-19 03:52:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:40,229 INFO L495 AbstractCegarLoop]: Abstraction has 114511 states and 122945 transitions. [2023-12-19 03:52:40,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:40,229 INFO L276 IsEmpty]: Start isEmpty. Operand 114511 states and 122945 transitions. [2023-12-19 03:52:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-19 03:52:40,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:40,242 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:40,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 03:52:40,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:40,462 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:40,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2085442127, now seen corresponding path program 1 times [2023-12-19 03:52:40,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:40,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066085589] [2023-12-19 03:52:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:40,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 283 proven. 113 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 03:52:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066085589] [2023-12-19 03:52:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066085589] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625419838] [2023-12-19 03:52:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:41,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:41,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:41,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:52:42,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 03:52:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:42,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:52:42,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-19 03:52:42,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:42,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625419838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:42,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-19 03:52:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636846656] [2023-12-19 03:52:42,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:42,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:42,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:42,730 INFO L87 Difference]: Start difference. First operand 114511 states and 122945 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:45,627 INFO L93 Difference]: Finished difference Result 219580 states and 236215 transitions. [2023-12-19 03:52:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:45,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 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 515 [2023-12-19 03:52:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:45,776 INFO L225 Difference]: With dead ends: 219580 [2023-12-19 03:52:45,777 INFO L226 Difference]: Without dead ends: 117665 [2023-12-19 03:52:45,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:45,825 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:45,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1151 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:52:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117665 states. [2023-12-19 03:52:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117665 to 115297. [2023-12-19 03:52:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115297 states, 115296 states have (on average 1.0675912434082708) internal successors, (123089), 115296 states have internal predecessors, (123089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115297 states to 115297 states and 123089 transitions. [2023-12-19 03:52:47,798 INFO L78 Accepts]: Start accepts. Automaton has 115297 states and 123089 transitions. Word has length 515 [2023-12-19 03:52:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:47,798 INFO L495 AbstractCegarLoop]: Abstraction has 115297 states and 123089 transitions. [2023-12-19 03:52:47,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 115297 states and 123089 transitions. [2023-12-19 03:52:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-12-19 03:52:47,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:47,826 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:52:47,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 03:52:48,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 03:52:48,035 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:48,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1534047083, now seen corresponding path program 1 times [2023-12-19 03:52:48,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:48,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453742570] [2023-12-19 03:52:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:48,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-19 03:52:48,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:48,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453742570] [2023-12-19 03:52:48,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453742570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:48,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:48,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973792449] [2023-12-19 03:52:48,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:48,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:48,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:48,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:48,580 INFO L87 Difference]: Start difference. First operand 115297 states and 123089 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:52,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:52,320 INFO L93 Difference]: Finished difference Result 257368 states and 275827 transitions. [2023-12-19 03:52:52,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:52,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 566 [2023-12-19 03:52:52,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:52,544 INFO L225 Difference]: With dead ends: 257368 [2023-12-19 03:52:52,544 INFO L226 Difference]: Without dead ends: 142072 [2023-12-19 03:52:52,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:52,626 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 695 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:52,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1901 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:52:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142072 states. [2023-12-19 03:52:54,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142072 to 139694. [2023-12-19 03:52:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139694 states, 139693 states have (on average 1.060590008089167) internal successors, (148157), 139693 states have internal predecessors, (148157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139694 states to 139694 states and 148157 transitions. [2023-12-19 03:52:54,843 INFO L78 Accepts]: Start accepts. Automaton has 139694 states and 148157 transitions. Word has length 566 [2023-12-19 03:52:54,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:54,844 INFO L495 AbstractCegarLoop]: Abstraction has 139694 states and 148157 transitions. [2023-12-19 03:52:54,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 139694 states and 148157 transitions. [2023-12-19 03:52:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-12-19 03:52:54,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:54,868 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:52:54,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 03:52:54,868 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:54,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1596086697, now seen corresponding path program 1 times [2023-12-19 03:52:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529502635] [2023-12-19 03:52:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:54,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-19 03:52:55,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:55,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529502635] [2023-12-19 03:52:55,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529502635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:55,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:55,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701793477] [2023-12-19 03:52:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:55,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:55,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:55,398 INFO L87 Difference]: Start difference. First operand 139694 states and 148157 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:52:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:59,603 INFO L93 Difference]: Finished difference Result 307831 states and 326430 transitions. [2023-12-19 03:52:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:59,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 566 [2023-12-19 03:52:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:00,026 INFO L225 Difference]: With dead ends: 307831 [2023-12-19 03:53:00,026 INFO L226 Difference]: Without dead ends: 168925 [2023-12-19 03:53:00,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:00,106 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 788 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:00,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 888 Invalid, 3460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 03:53:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168925 states. [2023-12-19 03:53:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168925 to 138123. [2023-12-19 03:53:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138123 states, 138122 states have (on average 1.0606130811890937) internal successors, (146494), 138122 states have internal predecessors, (146494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138123 states to 138123 states and 146494 transitions. [2023-12-19 03:53:02,479 INFO L78 Accepts]: Start accepts. Automaton has 138123 states and 146494 transitions. Word has length 566 [2023-12-19 03:53:02,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:02,480 INFO L495 AbstractCegarLoop]: Abstraction has 138123 states and 146494 transitions. [2023-12-19 03:53:02,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 138123 states and 146494 transitions. [2023-12-19 03:53:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-19 03:53:02,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:02,499 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:02,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 03:53:02,500 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:02,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:02,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1895323978, now seen corresponding path program 1 times [2023-12-19 03:53:02,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:02,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334396750] [2023-12-19 03:53:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:02,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-19 03:53:02,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:02,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334396750] [2023-12-19 03:53:02,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334396750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:02,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:02,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375470817] [2023-12-19 03:53:02,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:02,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:53:02,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:02,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:53:02,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:53:02,964 INFO L87 Difference]: Start difference. First operand 138123 states and 146494 transitions. Second operand has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:09,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:09,801 INFO L93 Difference]: Finished difference Result 389012 states and 413197 transitions. [2023-12-19 03:53:09,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:53:09,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 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 594 [2023-12-19 03:53:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:10,223 INFO L225 Difference]: With dead ends: 389012 [2023-12-19 03:53:10,223 INFO L226 Difference]: Without dead ends: 251677 [2023-12-19 03:53:10,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:53:10,313 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1696 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 6279 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 6279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:10,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 749 Invalid, 7252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 6279 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 03:53:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251677 states. [2023-12-19 03:53:13,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251677 to 249959. [2023-12-19 03:53:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249959 states, 249958 states have (on average 1.0588458861088663) internal successors, (264667), 249958 states have internal predecessors, (264667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249959 states to 249959 states and 264667 transitions. [2023-12-19 03:53:14,467 INFO L78 Accepts]: Start accepts. Automaton has 249959 states and 264667 transitions. Word has length 594 [2023-12-19 03:53:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:14,467 INFO L495 AbstractCegarLoop]: Abstraction has 249959 states and 264667 transitions. [2023-12-19 03:53:14,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 249959 states and 264667 transitions. [2023-12-19 03:53:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-12-19 03:53:14,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:14,497 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:14,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 03:53:14,497 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:14,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:14,497 INFO L85 PathProgramCache]: Analyzing trace with hash 137468095, now seen corresponding path program 1 times [2023-12-19 03:53:14,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:14,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600609048] [2023-12-19 03:53:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:14,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 791 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-19 03:53:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600609048] [2023-12-19 03:53:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600609048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:15,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:15,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:15,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032725181] [2023-12-19 03:53:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:15,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:15,199 INFO L87 Difference]: Start difference. First operand 249959 states and 264667 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:19,532 INFO L93 Difference]: Finished difference Result 480259 states and 509275 transitions. [2023-12-19 03:53:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:19,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 648 [2023-12-19 03:53:19,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:20,094 INFO L225 Difference]: With dead ends: 480259 [2023-12-19 03:53:20,094 INFO L226 Difference]: Without dead ends: 249978 [2023-12-19 03:53:20,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:20,253 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 772 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:20,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1780 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:53:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249978 states. [2023-12-19 03:53:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249978 to 246809. [2023-12-19 03:53:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246809 states, 246808 states have (on average 1.0561853748662928) internal successors, (260675), 246808 states have internal predecessors, (260675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246809 states to 246809 states and 260675 transitions. [2023-12-19 03:53:24,135 INFO L78 Accepts]: Start accepts. Automaton has 246809 states and 260675 transitions. Word has length 648 [2023-12-19 03:53:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:24,135 INFO L495 AbstractCegarLoop]: Abstraction has 246809 states and 260675 transitions. [2023-12-19 03:53:24,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 246809 states and 260675 transitions. [2023-12-19 03:53:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-19 03:53:24,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:24,165 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:24,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 03:53:24,165 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:24,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:24,166 INFO L85 PathProgramCache]: Analyzing trace with hash 894560162, now seen corresponding path program 1 times [2023-12-19 03:53:24,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:24,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469487632] [2023-12-19 03:53:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:24,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2023-12-19 03:53:24,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469487632] [2023-12-19 03:53:24,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469487632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:24,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:24,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:24,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956709988] [2023-12-19 03:53:24,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:24,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:24,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:24,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:24,917 INFO L87 Difference]: Start difference. First operand 246809 states and 260675 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:30,201 INFO L93 Difference]: Finished difference Result 535470 states and 566832 transitions. [2023-12-19 03:53:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 678 [2023-12-19 03:53:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:30,763 INFO L225 Difference]: With dead ends: 535470 [2023-12-19 03:53:30,764 INFO L226 Difference]: Without dead ends: 309917 [2023-12-19 03:53:30,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:30,863 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1014 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:30,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 361 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 03:53:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309917 states. [2023-12-19 03:53:34,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309917 to 248391. [2023-12-19 03:53:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248391 states, 248390 states have (on average 1.0561657071540722) internal successors, (262341), 248390 states have internal predecessors, (262341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248391 states to 248391 states and 262341 transitions. [2023-12-19 03:53:34,578 INFO L78 Accepts]: Start accepts. Automaton has 248391 states and 262341 transitions. Word has length 678 [2023-12-19 03:53:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 248391 states and 262341 transitions. [2023-12-19 03:53:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 248391 states and 262341 transitions. [2023-12-19 03:53:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2023-12-19 03:53:34,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:34,608 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:34,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 03:53:34,608 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:34,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:34,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1721045399, now seen corresponding path program 1 times [2023-12-19 03:53:34,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:34,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510452979] [2023-12-19 03:53:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:34,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2023-12-19 03:53:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510452979] [2023-12-19 03:53:35,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510452979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:35,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:35,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042736477] [2023-12-19 03:53:35,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:35,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:35,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:35,527 INFO L87 Difference]: Start difference. First operand 248391 states and 262341 transitions. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:39,643 INFO L93 Difference]: Finished difference Result 481786 states and 509890 transitions. [2023-12-19 03:53:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:39,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 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 738 [2023-12-19 03:53:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:40,503 INFO L225 Difference]: With dead ends: 481786 [2023-12-19 03:53:40,503 INFO L226 Difference]: Without dead ends: 254651 [2023-12-19 03:53:40,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:40,685 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1000 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:40,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 351 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:53:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254651 states. [2023-12-19 03:53:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254651 to 252290. [2023-12-19 03:53:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252290 states, 252289 states have (on average 1.0518096310183955) internal successors, (265360), 252289 states have internal predecessors, (265360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252290 states to 252290 states and 265360 transitions. [2023-12-19 03:53:44,600 INFO L78 Accepts]: Start accepts. Automaton has 252290 states and 265360 transitions. Word has length 738 [2023-12-19 03:53:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:44,601 INFO L495 AbstractCegarLoop]: Abstraction has 252290 states and 265360 transitions. [2023-12-19 03:53:44,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 252290 states and 265360 transitions. [2023-12-19 03:53:44,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-19 03:53:44,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:44,634 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:53:44,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 03:53:44,634 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:44,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:44,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1404730567, now seen corresponding path program 1 times [2023-12-19 03:53:44,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:44,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243893460] [2023-12-19 03:53:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:44,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-19 03:53:45,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243893460] [2023-12-19 03:53:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243893460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:45,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:45,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:45,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163501898] [2023-12-19 03:53:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:45,221 INFO L87 Difference]: Start difference. First operand 252290 states and 265360 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:49,274 INFO L93 Difference]: Finished difference Result 503009 states and 529107 transitions. [2023-12-19 03:53:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:49,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 752 [2023-12-19 03:53:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:49,689 INFO L225 Difference]: With dead ends: 503009 [2023-12-19 03:53:49,689 INFO L226 Difference]: Without dead ends: 251507 [2023-12-19 03:53:49,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:49,822 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 775 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:49,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1746 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:53:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251507 states. [2023-12-19 03:53:53,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251507 to 247564. [2023-12-19 03:53:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247564 states, 247563 states have (on average 1.041351090429507) internal successors, (257800), 247563 states have internal predecessors, (257800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247564 states to 247564 states and 257800 transitions. [2023-12-19 03:53:54,035 INFO L78 Accepts]: Start accepts. Automaton has 247564 states and 257800 transitions. Word has length 752 [2023-12-19 03:53:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:54,035 INFO L495 AbstractCegarLoop]: Abstraction has 247564 states and 257800 transitions. [2023-12-19 03:53:54,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:53:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 247564 states and 257800 transitions. [2023-12-19 03:53:54,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-12-19 03:53:54,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:54,084 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:53:54,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 03:53:54,084 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:54,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:54,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1583333393, now seen corresponding path program 1 times [2023-12-19 03:53:54,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:54,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594293664] [2023-12-19 03:53:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2114 backedges. 1385 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-12-19 03:53:54,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594293664] [2023-12-19 03:53:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594293664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:54,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:54,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 03:53:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750992846] [2023-12-19 03:53:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:53:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:53:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:53:54,819 INFO L87 Difference]: Start difference. First operand 247564 states and 257800 transitions. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:01,892 INFO L93 Difference]: Finished difference Result 577944 states and 601968 transitions. [2023-12-19 03:54:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:54:01,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 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 784 [2023-12-19 03:54:01,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:02,633 INFO L225 Difference]: With dead ends: 577944 [2023-12-19 03:54:02,634 INFO L226 Difference]: Without dead ends: 331168 [2023-12-19 03:54:03,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:54:03,120 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1703 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 6197 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 7137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 6197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:03,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 916 Invalid, 7137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 6197 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 03:54:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331168 states. [2023-12-19 03:54:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331168 to 271189. [2023-12-19 03:54:07,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271189 states, 271188 states have (on average 1.039326961369972) internal successors, (281853), 271188 states have internal predecessors, (281853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271189 states to 271189 states and 281853 transitions. [2023-12-19 03:54:07,980 INFO L78 Accepts]: Start accepts. Automaton has 271189 states and 281853 transitions. Word has length 784 [2023-12-19 03:54:07,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:07,981 INFO L495 AbstractCegarLoop]: Abstraction has 271189 states and 281853 transitions. [2023-12-19 03:54:07,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 271189 states and 281853 transitions. [2023-12-19 03:54:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2023-12-19 03:54:08,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:08,032 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:08,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 03:54:08,033 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:08,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:08,034 INFO L85 PathProgramCache]: Analyzing trace with hash 389182819, now seen corresponding path program 1 times [2023-12-19 03:54:08,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:08,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295766779] [2023-12-19 03:54:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2477 backedges. 1703 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-12-19 03:54:08,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:08,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295766779] [2023-12-19 03:54:08,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295766779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:08,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:08,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:54:08,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107987232] [2023-12-19 03:54:08,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:08,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:08,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:08,902 INFO L87 Difference]: Start difference. First operand 271189 states and 281853 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:12,681 INFO L93 Difference]: Finished difference Result 538451 states and 559624 transitions. [2023-12-19 03:54:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:12,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 804 [2023-12-19 03:54:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:13,519 INFO L225 Difference]: With dead ends: 538451 [2023-12-19 03:54:13,519 INFO L226 Difference]: Without dead ends: 266472 [2023-12-19 03:54:13,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:13,628 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 760 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:13,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1712 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:54:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266472 states. [2023-12-19 03:54:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266472 to 255414. [2023-12-19 03:54:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255414 states, 255413 states have (on average 1.0331110789192406) internal successors, (263870), 255413 states have internal predecessors, (263870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255414 states to 255414 states and 263870 transitions. [2023-12-19 03:54:18,662 INFO L78 Accepts]: Start accepts. Automaton has 255414 states and 263870 transitions. Word has length 804 [2023-12-19 03:54:18,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:18,667 INFO L495 AbstractCegarLoop]: Abstraction has 255414 states and 263870 transitions. [2023-12-19 03:54:18,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 255414 states and 263870 transitions. [2023-12-19 03:54:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-19 03:54:18,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:18,709 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:18,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 03:54:18,709 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:18,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash -16262123, now seen corresponding path program 1 times [2023-12-19 03:54:18,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749475276] [2023-12-19 03:54:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:18,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 1141 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2023-12-19 03:54:19,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:19,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749475276] [2023-12-19 03:54:19,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749475276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:19,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:19,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 03:54:19,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926450718] [2023-12-19 03:54:19,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:19,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:54:19,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:19,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:54:19,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:54:19,642 INFO L87 Difference]: Start difference. First operand 255414 states and 263870 transitions. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:27,994 INFO L93 Difference]: Finished difference Result 592064 states and 612069 transitions. [2023-12-19 03:54:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:54:27,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 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 827 [2023-12-19 03:54:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:28,688 INFO L225 Difference]: With dead ends: 592064 [2023-12-19 03:54:28,688 INFO L226 Difference]: Without dead ends: 342162 [2023-12-19 03:54:28,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:54:28,853 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1669 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 5162 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 6368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 5162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:28,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 430 Invalid, 6368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1206 Valid, 5162 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 03:54:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342162 states. [2023-12-19 03:54:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342162 to 329440. [2023-12-19 03:54:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329440 states, 329439 states have (on average 1.0328224648569235) internal successors, (340252), 329439 states have internal predecessors, (340252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329440 states to 329440 states and 340252 transitions. [2023-12-19 03:54:33,680 INFO L78 Accepts]: Start accepts. Automaton has 329440 states and 340252 transitions. Word has length 827 [2023-12-19 03:54:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:33,681 INFO L495 AbstractCegarLoop]: Abstraction has 329440 states and 340252 transitions. [2023-12-19 03:54:33,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 329440 states and 340252 transitions. [2023-12-19 03:54:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2023-12-19 03:54:33,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:33,838 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:33,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 03:54:33,839 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:33,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash 960669757, now seen corresponding path program 1 times [2023-12-19 03:54:33,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025501514] [2023-12-19 03:54:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 1859 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2023-12-19 03:54:34,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:34,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025501514] [2023-12-19 03:54:34,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025501514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:34,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:54:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992580320] [2023-12-19 03:54:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:34,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:34,969 INFO L87 Difference]: Start difference. First operand 329440 states and 340252 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:39,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:39,517 INFO L93 Difference]: Finished difference Result 644730 states and 666320 transitions. [2023-12-19 03:54:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:39,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 875 [2023-12-19 03:54:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:40,177 INFO L225 Difference]: With dead ends: 644730 [2023-12-19 03:54:40,177 INFO L226 Difference]: Without dead ends: 333398 [2023-12-19 03:54:40,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:40,353 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 701 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:40,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1758 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:54:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333398 states. [2023-12-19 03:54:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333398 to 333375. [2023-12-19 03:54:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333375 states, 333374 states have (on average 1.032327056099156) internal successors, (344151), 333374 states have internal predecessors, (344151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333375 states to 333375 states and 344151 transitions. [2023-12-19 03:54:45,072 INFO L78 Accepts]: Start accepts. Automaton has 333375 states and 344151 transitions. Word has length 875 [2023-12-19 03:54:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:45,072 INFO L495 AbstractCegarLoop]: Abstraction has 333375 states and 344151 transitions. [2023-12-19 03:54:45,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 333375 states and 344151 transitions. [2023-12-19 03:54:45,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2023-12-19 03:54:45,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:45,495 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:45,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 03:54:45,495 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:45,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:45,496 INFO L85 PathProgramCache]: Analyzing trace with hash 629778648, now seen corresponding path program 1 times [2023-12-19 03:54:45,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:45,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659132403] [2023-12-19 03:54:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:45,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3156 backedges. 2104 proven. 0 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2023-12-19 03:54:46,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659132403] [2023-12-19 03:54:46,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659132403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:46,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:46,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:54:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314779718] [2023-12-19 03:54:46,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:46,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:46,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:46,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:46,316 INFO L87 Difference]: Start difference. First operand 333375 states and 344151 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:50,792 INFO L93 Difference]: Finished difference Result 654945 states and 676470 transitions. [2023-12-19 03:54:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:50,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 899 [2023-12-19 03:54:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:51,768 INFO L225 Difference]: With dead ends: 654945 [2023-12-19 03:54:51,769 INFO L226 Difference]: Without dead ends: 339678 [2023-12-19 03:54:51,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:51,870 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 720 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:51,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1768 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:54:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339678 states.