/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/Problem19_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:48:28,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:48:28,469 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 04:48:28,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:48:28,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:48:28,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:48:28,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:48:28,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:48:28,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:48:28,486 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:48:28,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:48:28,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:48:28,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:48:28,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:48:28,487 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:48:28,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:48:28,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:48:28,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:48:28,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:48:28,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:48:28,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:48:28,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:48:28,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:48:28,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:48:28,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:48:28,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:48:28,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:48:28,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:48:28,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:48:28,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:48:28,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:48:28,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:48:28,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:48:28,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:48:28,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:48:28,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:48:28,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:48:28,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:48:28,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:48:28,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:48:28,492 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:48:28,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:48:28,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:48:28,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:48:28,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:48:28,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:48:28,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:48:28,646 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:48:28,647 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:48:28,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label13.c [2023-12-19 04:48:29,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:48:30,100 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:48:30,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label13.c [2023-12-19 04:48:30,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778a17971/791619d3cdb4400c93c5040c5ecd8bb3/FLAG30fe6c340 [2023-12-19 04:48:30,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778a17971/791619d3cdb4400c93c5040c5ecd8bb3 [2023-12-19 04:48:30,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:48:30,157 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:48:30,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:48:30,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:48:30,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:48:30,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:48:30" (1/1) ... [2023-12-19 04:48:30,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ac9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:30, skipping insertion in model container [2023-12-19 04:48:30,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:48:30" (1/1) ... [2023-12-19 04:48:30,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:48:30,530 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/Problem19_label13.c[4813,4826] [2023-12-19 04:48:31,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:48:31,427 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:48:31,456 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/Problem19_label13.c[4813,4826] [2023-12-19 04:48:31,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:48:32,009 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:48:32,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32 WrapperNode [2023-12-19 04:48:32,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:48:32,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:48:32,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:48:32,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:48:32,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:32,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:32,708 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2023-12-19 04:48:32,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:48:32,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:48:32,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:48:32,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:48:32,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:32,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:32,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:33,186 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 04:48:33,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:33,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:33,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:33,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:33,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:33,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:33,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:48:33,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:48:33,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:48:33,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:48:33,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (1/1) ... [2023-12-19 04:48:33,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:48:33,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:48:33,797 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 04:48:33,804 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 04:48:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:48:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:48:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:48:33,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:48:33,879 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:48:33,880 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:48:39,949 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:48:40,018 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:48:40,019 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:48:40,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:48:40 BoogieIcfgContainer [2023-12-19 04:48:40,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:48:40,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:48:40,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:48:40,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:48:40,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:48:30" (1/3) ... [2023-12-19 04:48:40,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e87b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:48:40, skipping insertion in model container [2023-12-19 04:48:40,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:48:32" (2/3) ... [2023-12-19 04:48:40,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e87b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:48:40, skipping insertion in model container [2023-12-19 04:48:40,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:48:40" (3/3) ... [2023-12-19 04:48:40,027 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label13.c [2023-12-19 04:48:40,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:48:40,039 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:48:40,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:48:40,112 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;@67758dac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:48:40,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:48:40,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states 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 04:48:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-19 04:48:40,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:48:40,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:48:40,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:48:40,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:48:40,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2137361790, now seen corresponding path program 1 times [2023-12-19 04:48:40,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:48:40,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684161011] [2023-12-19 04:48:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:48:40,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:48:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:48:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:48:40,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:48:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684161011] [2023-12-19 04:48:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684161011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:48:40,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:48:40,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:48:40,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54200423] [2023-12-19 04:48:40,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:48:40,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:48:40,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:48:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:48:40,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:48:40,327 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 04:48:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:48:40,397 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-12-19 04:48:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:48:40,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-19 04:48:40,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:48:40,417 INFO L225 Difference]: With dead ends: 3371 [2023-12-19 04:48:40,418 INFO L226 Difference]: Without dead ends: 1684 [2023-12-19 04:48:40,423 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 04:48:40,426 INFO L413 NwaCegarLoop]: 3138 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, 3138 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 04:48:40,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:48:40,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-19 04:48:40,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-19 04:48:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states 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 04:48:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-12-19 04:48:40,496 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 34 [2023-12-19 04:48:40,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:48:40,496 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-12-19 04:48:40,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 04:48:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-12-19 04:48:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-19 04:48:40,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:48:40,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:48:40,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:48:40,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:48:40,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:48:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2080390040, now seen corresponding path program 1 times [2023-12-19 04:48:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:48:40,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412236793] [2023-12-19 04:48:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:48:40,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:48:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:48:40,583 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 04:48:40,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:48:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412236793] [2023-12-19 04:48:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412236793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:48:40,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:48:40,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:48:40,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756224565] [2023-12-19 04:48:40,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:48:40,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:48:40,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:48:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:48:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:48:40,586 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 04:48:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:48:46,687 INFO L93 Difference]: Finished difference Result 4862 states and 9131 transitions. [2023-12-19 04:48:46,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:48:46,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-19 04:48:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:48:46,704 INFO L225 Difference]: With dead ends: 4862 [2023-12-19 04:48:46,704 INFO L226 Difference]: Without dead ends: 3179 [2023-12-19 04:48:46,706 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 04:48:46,707 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 1613 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 2020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 6161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2020 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:48:46,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 1110 Invalid, 6161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2020 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-19 04:48:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2023-12-19 04:48:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3121. [2023-12-19 04:48:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3120 states have (on average 1.728525641025641) internal successors, (5393), 3120 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states 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 04:48:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 5393 transitions. [2023-12-19 04:48:46,789 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 5393 transitions. Word has length 34 [2023-12-19 04:48:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:48:46,789 INFO L495 AbstractCegarLoop]: Abstraction has 3121 states and 5393 transitions. [2023-12-19 04:48:46,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 04:48:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 5393 transitions. [2023-12-19 04:48:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 04:48:46,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:48:46,792 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, 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 04:48:46,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:48:46,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:48:46,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:48:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2140059397, now seen corresponding path program 1 times [2023-12-19 04:48:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:48:46,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598755969] [2023-12-19 04:48:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:48:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:48:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:48:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:48:46,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:48:46,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598755969] [2023-12-19 04:48:46,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598755969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:48:47,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:48:47,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:48:47,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939214677] [2023-12-19 04:48:47,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:48:47,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:48:47,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:48:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:48:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:48:47,006 INFO L87 Difference]: Start difference. First operand 3121 states and 5393 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 04:48:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:48:53,175 INFO L93 Difference]: Finished difference Result 9134 states and 15859 transitions. [2023-12-19 04:48:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:48:53,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-19 04:48:53,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:48:53,195 INFO L225 Difference]: With dead ends: 9134 [2023-12-19 04:48:53,195 INFO L226 Difference]: Without dead ends: 6014 [2023-12-19 04:48:53,199 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 04:48:53,200 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2533 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 5119 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:48:53,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 990 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5119 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-19 04:48:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2023-12-19 04:48:53,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 6012. [2023-12-19 04:48:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.6709366162036268) internal successors, (10044), 6011 states have internal predecessors, (10044), 0 states have call successors, (0), 0 states 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 04:48:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 10044 transitions. [2023-12-19 04:48:53,297 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 10044 transitions. Word has length 102 [2023-12-19 04:48:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:48:53,302 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 10044 transitions. [2023-12-19 04:48:53,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 04:48:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 10044 transitions. [2023-12-19 04:48:53,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 04:48:53,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:48:53,311 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:48:53,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:48:53,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:48:53,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:48:53,312 INFO L85 PathProgramCache]: Analyzing trace with hash -202944576, now seen corresponding path program 1 times [2023-12-19 04:48:53,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:48:53,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165869769] [2023-12-19 04:48:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:48:53,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:48:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:48:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:48:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:48:53,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165869769] [2023-12-19 04:48:53,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165869769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:48:53,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:48:53,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:48:53,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069478900] [2023-12-19 04:48:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:48:53,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:48:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:48:53,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:48:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:48:53,449 INFO L87 Difference]: Start difference. First operand 6012 states and 10044 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:48:59,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:48:59,529 INFO L93 Difference]: Finished difference Result 17597 states and 29554 transitions. [2023-12-19 04:48:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:48:59,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-19 04:48:59,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:48:59,565 INFO L225 Difference]: With dead ends: 17597 [2023-12-19 04:48:59,565 INFO L226 Difference]: Without dead ends: 11586 [2023-12-19 04:48:59,575 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 04:48:59,583 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 1534 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4336 mSolverCounterSat, 1470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1470 IncrementalHoareTripleChecker+Valid, 4336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:48:59,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1716 Invalid, 5806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1470 Valid, 4336 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-19 04:48:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2023-12-19 04:48:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11551. [2023-12-19 04:48:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11551 states, 11550 states have (on average 1.4577489177489178) internal successors, (16837), 11550 states have internal predecessors, (16837), 0 states have call successors, (0), 0 states 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 04:48:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11551 states to 11551 states and 16837 transitions. [2023-12-19 04:48:59,774 INFO L78 Accepts]: Start accepts. Automaton has 11551 states and 16837 transitions. Word has length 105 [2023-12-19 04:48:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:48:59,775 INFO L495 AbstractCegarLoop]: Abstraction has 11551 states and 16837 transitions. [2023-12-19 04:48:59,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:48:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 11551 states and 16837 transitions. [2023-12-19 04:48:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 04:48:59,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:48:59,779 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:48:59,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:48:59,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:48:59,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:48:59,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1412956273, now seen corresponding path program 1 times [2023-12-19 04:48:59,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:48:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275429857] [2023-12-19 04:48:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:48:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:48:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:48:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:48:59,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:48:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275429857] [2023-12-19 04:48:59,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275429857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:48:59,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:48:59,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:48:59,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777547544] [2023-12-19 04:48:59,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:48:59,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:48:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:48:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:48:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:48:59,949 INFO L87 Difference]: Start difference. First operand 11551 states and 16837 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 04:49:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:49:05,957 INFO L93 Difference]: Finished difference Result 34261 states and 50006 transitions. [2023-12-19 04:49:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:49:05,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-19 04:49:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:49:06,017 INFO L225 Difference]: With dead ends: 34261 [2023-12-19 04:49:06,018 INFO L226 Difference]: Without dead ends: 22711 [2023-12-19 04:49:06,036 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 04:49:06,036 INFO L413 NwaCegarLoop]: 1848 mSDtfsCounter, 1750 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4316 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 5746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:49:06,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 2121 Invalid, 5746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4316 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-19 04:49:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22711 states. [2023-12-19 04:49:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22711 to 22686. [2023-12-19 04:49:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22686 states, 22685 states have (on average 1.281948424068768) internal successors, (29081), 22685 states have internal predecessors, (29081), 0 states have call successors, (0), 0 states 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 04:49:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22686 states to 22686 states and 29081 transitions. [2023-12-19 04:49:06,423 INFO L78 Accepts]: Start accepts. Automaton has 22686 states and 29081 transitions. Word has length 131 [2023-12-19 04:49:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:49:06,425 INFO L495 AbstractCegarLoop]: Abstraction has 22686 states and 29081 transitions. [2023-12-19 04:49:06,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 04:49:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 22686 states and 29081 transitions. [2023-12-19 04:49:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-19 04:49:06,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:49:06,429 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, 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, 2, 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] [2023-12-19 04:49:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:49:06,430 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:49:06,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:49:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash -874815242, now seen corresponding path program 1 times [2023-12-19 04:49:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:49:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329487313] [2023-12-19 04:49:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:49:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:49:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:49:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 04:49:07,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:49:07,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329487313] [2023-12-19 04:49:07,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329487313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:49:07,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:49:07,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:49:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387457899] [2023-12-19 04:49:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:49:07,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:49:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:49:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:49:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:49:07,320 INFO L87 Difference]: Start difference. First operand 22686 states and 29081 transitions. Second operand has 4 states, 4 states have (on average 95.25) 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 04:49:15,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:49:15,960 INFO L93 Difference]: Finished difference Result 57743 states and 72060 transitions. [2023-12-19 04:49:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:49:15,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.25) 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 413 [2023-12-19 04:49:15,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:49:16,018 INFO L225 Difference]: With dead ends: 57743 [2023-12-19 04:49:16,018 INFO L226 Difference]: Without dead ends: 35058 [2023-12-19 04:49:16,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:49:16,042 INFO L413 NwaCegarLoop]: 1789 mSDtfsCounter, 3752 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 9617 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 9789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 9617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:49:16,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3752 Valid, 2146 Invalid, 9789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 9617 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-12-19 04:49:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35058 states. [2023-12-19 04:49:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35058 to 33648. [2023-12-19 04:49:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33648 states, 33647 states have (on average 1.2262608850714773) internal successors, (41260), 33647 states have internal predecessors, (41260), 0 states have call successors, (0), 0 states 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 04:49:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33648 states to 33648 states and 41260 transitions. [2023-12-19 04:49:16,438 INFO L78 Accepts]: Start accepts. Automaton has 33648 states and 41260 transitions. Word has length 413 [2023-12-19 04:49:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:49:16,438 INFO L495 AbstractCegarLoop]: Abstraction has 33648 states and 41260 transitions. [2023-12-19 04:49:16,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) 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 04:49:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 33648 states and 41260 transitions. [2023-12-19 04:49:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-12-19 04:49:16,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:49:16,447 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:49:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:49:16,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:49:16,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:49:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash 547794114, now seen corresponding path program 1 times [2023-12-19 04:49:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:49:16,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897730472] [2023-12-19 04:49:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:49:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:49:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:49:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-19 04:49:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:49:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897730472] [2023-12-19 04:49:17,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897730472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:49:17,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:49:17,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:49:17,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933234319] [2023-12-19 04:49:17,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:49:17,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:49:17,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:49:17,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:49:17,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:49:17,400 INFO L87 Difference]: Start difference. First operand 33648 states and 41260 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 04:49:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:49:25,706 INFO L93 Difference]: Finished difference Result 90599 states and 108577 transitions. [2023-12-19 04:49:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:49:25,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 620 [2023-12-19 04:49:25,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:49:25,790 INFO L225 Difference]: With dead ends: 90599 [2023-12-19 04:49:25,791 INFO L226 Difference]: Without dead ends: 56952 [2023-12-19 04:49:25,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:49:25,826 INFO L413 NwaCegarLoop]: 1747 mSDtfsCounter, 3757 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9353 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 9615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 9353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:49:25,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 2099 Invalid, 9615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 9353 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-19 04:49:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56952 states. [2023-12-19 04:49:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56952 to 52813. [2023-12-19 04:49:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52813 states, 52812 states have (on average 1.1742028326895402) internal successors, (62012), 52812 states have internal predecessors, (62012), 0 states have call successors, (0), 0 states 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 04:49:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52813 states to 52813 states and 62012 transitions. [2023-12-19 04:49:26,446 INFO L78 Accepts]: Start accepts. Automaton has 52813 states and 62012 transitions. Word has length 620 [2023-12-19 04:49:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:49:26,446 INFO L495 AbstractCegarLoop]: Abstraction has 52813 states and 62012 transitions. [2023-12-19 04:49:26,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 04:49:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 52813 states and 62012 transitions. [2023-12-19 04:49:26,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-12-19 04:49:26,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:49:26,452 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:49:26,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:49:26,452 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:49:26,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:49:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1783739620, now seen corresponding path program 1 times [2023-12-19 04:49:26,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:49:26,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87106116] [2023-12-19 04:49:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:49:26,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:49:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:49:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-12-19 04:49:27,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:49:27,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87106116] [2023-12-19 04:49:27,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87106116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:49:27,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:49:27,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:49:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927298146] [2023-12-19 04:49:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:49:27,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:49:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:49:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:49:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:49:27,562 INFO L87 Difference]: Start difference. First operand 52813 states and 62012 transitions. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 04:49:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:49:34,140 INFO L93 Difference]: Finished difference Result 108386 states and 126802 transitions. [2023-12-19 04:49:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:49:34,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 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 04:49:34,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:49:34,226 INFO L225 Difference]: With dead ends: 108386 [2023-12-19 04:49:34,227 INFO L226 Difference]: Without dead ends: 55543 [2023-12-19 04:49:34,270 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 04:49:34,270 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 1138 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 7322 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 7330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:49:34,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2107 Invalid, 7330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7322 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 04:49:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55543 states. [2023-12-19 04:49:34,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55543 to 55543. [2023-12-19 04:49:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55543 states, 55542 states have (on average 1.1657304382269273) internal successors, (64747), 55542 states have internal predecessors, (64747), 0 states have call successors, (0), 0 states 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 04:49:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55543 states to 55543 states and 64747 transitions. [2023-12-19 04:49:35,237 INFO L78 Accepts]: Start accepts. Automaton has 55543 states and 64747 transitions. Word has length 648 [2023-12-19 04:49:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:49:35,247 INFO L495 AbstractCegarLoop]: Abstraction has 55543 states and 64747 transitions. [2023-12-19 04:49:35,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 04:49:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 55543 states and 64747 transitions. [2023-12-19 04:49:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-19 04:49:35,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:49:35,254 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:35,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:49:35,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:49:35,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:49:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2005506464, now seen corresponding path program 1 times [2023-12-19 04:49:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:49:35,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240059499] [2023-12-19 04:49:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:49:35,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:49:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:49:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-19 04:49:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:49:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240059499] [2023-12-19 04:49:36,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240059499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:49:36,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:49:36,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:49:36,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199716191] [2023-12-19 04:49:36,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:49:36,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:49:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:49:36,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:49:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:49:36,503 INFO L87 Difference]: Start difference. First operand 55543 states and 64747 transitions. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 04:49:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:49:42,656 INFO L93 Difference]: Finished difference Result 133113 states and 156924 transitions. [2023-12-19 04:49:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:49:42,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 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 733 [2023-12-19 04:49:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:49:42,758 INFO L225 Difference]: With dead ends: 133113 [2023-12-19 04:49:42,758 INFO L226 Difference]: Without dead ends: 80301 [2023-12-19 04:49:42,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 04:49:42,785 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1696 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4262 mSolverCounterSat, 2245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2245 IncrementalHoareTripleChecker+Valid, 4262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:49:42,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 811 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2245 Valid, 4262 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 04:49:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80301 states. [2023-12-19 04:49:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80301 to 77412. [2023-12-19 04:49:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77412 states, 77411 states have (on average 1.1824934440841741) internal successors, (91538), 77411 states have internal predecessors, (91538), 0 states have call successors, (0), 0 states 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 04:49:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77412 states to 77412 states and 91538 transitions. [2023-12-19 04:49:43,705 INFO L78 Accepts]: Start accepts. Automaton has 77412 states and 91538 transitions. Word has length 733 [2023-12-19 04:49:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:49:43,706 INFO L495 AbstractCegarLoop]: Abstraction has 77412 states and 91538 transitions. [2023-12-19 04:49:43,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 04:49:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 77412 states and 91538 transitions. [2023-12-19 04:49:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2023-12-19 04:49:43,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:49:43,711 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:43,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:49:43,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:49:43,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:49:43,712 INFO L85 PathProgramCache]: Analyzing trace with hash 181111177, now seen corresponding path program 1 times [2023-12-19 04:49:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:49:43,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380002818] [2023-12-19 04:49:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:49:43,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:49:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:49:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 65 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:49:45,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:49:45,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380002818] [2023-12-19 04:49:45,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380002818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:49:45,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241832092] [2023-12-19 04:49:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:49:45,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:49:45,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:49:45,537 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 04:49:45,541 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 04:49:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:49:45,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:49:45,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:49:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-19 04:49:45,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:49:45,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241832092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:49:45,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:49:45,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 04:49:45,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155518101] [2023-12-19 04:49:45,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:49:45,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:49:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:49:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:49:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:49:45,904 INFO L87 Difference]: Start difference. First operand 77412 states and 91538 transitions. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 04:49:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:49:52,372 INFO L93 Difference]: Finished difference Result 208110 states and 248506 transitions. [2023-12-19 04:49:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:49:52,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 740 [2023-12-19 04:49:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:49:52,562 INFO L225 Difference]: With dead ends: 208110 [2023-12-19 04:49:52,562 INFO L226 Difference]: Without dead ends: 133429 [2023-12-19 04:49:52,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:49:52,584 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 1525 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 5054 mSolverCounterSat, 1001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 5054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:49:52,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1663 Invalid, 6055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1001 Valid, 5054 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 04:49:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133429 states. [2023-12-19 04:49:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133429 to 122472. [2023-12-19 04:49:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122472 states, 122471 states have (on average 1.1725224747082983) internal successors, (143600), 122471 states have internal predecessors, (143600), 0 states have call successors, (0), 0 states 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 04:49:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122472 states to 122472 states and 143600 transitions. [2023-12-19 04:49:54,544 INFO L78 Accepts]: Start accepts. Automaton has 122472 states and 143600 transitions. Word has length 740 [2023-12-19 04:49:54,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:49:54,545 INFO L495 AbstractCegarLoop]: Abstraction has 122472 states and 143600 transitions. [2023-12-19 04:49:54,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 04:49:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 122472 states and 143600 transitions. [2023-12-19 04:49:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2023-12-19 04:49:54,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:49:54,559 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:54,568 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 04:49:54,765 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,SelfDestructingSolverStorable9 [2023-12-19 04:49:54,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:49:54,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:49:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1645780034, now seen corresponding path program 1 times [2023-12-19 04:49:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:49:54,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047247059] [2023-12-19 04:49:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:49:54,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:49:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:49:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-12-19 04:49:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:49:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047247059] [2023-12-19 04:49:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047247059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:49:55,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:49:55,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:49:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314632685] [2023-12-19 04:49:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:49:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:49:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:49:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:49:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:49:55,396 INFO L87 Difference]: Start difference. First operand 122472 states and 143600 transitions. Second operand has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 2 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 04:50:01,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:50:01,121 INFO L93 Difference]: Finished difference Result 276353 states and 325566 transitions. [2023-12-19 04:50:01,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:50:01,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 2 states have internal predecessors, (623), 0 states have call successors, (0), 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 986 [2023-12-19 04:50:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:50:01,326 INFO L225 Difference]: With dead ends: 276353 [2023-12-19 04:50:01,326 INFO L226 Difference]: Without dead ends: 156612 [2023-12-19 04:50:01,368 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 04:50:01,369 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1384 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 1881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 5807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1881 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:50:01,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 765 Invalid, 5807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1881 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-19 04:50:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156612 states. [2023-12-19 04:50:03,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156612 to 153857. [2023-12-19 04:50:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153857 states, 153856 states have (on average 1.1548005927620633) internal successors, (177673), 153856 states have internal predecessors, (177673), 0 states have call successors, (0), 0 states 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 04:50:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153857 states to 153857 states and 177673 transitions. [2023-12-19 04:50:03,610 INFO L78 Accepts]: Start accepts. Automaton has 153857 states and 177673 transitions. Word has length 986 [2023-12-19 04:50:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:50:03,624 INFO L495 AbstractCegarLoop]: Abstraction has 153857 states and 177673 transitions. [2023-12-19 04:50:03,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 2 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 04:50:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 153857 states and 177673 transitions. [2023-12-19 04:50:03,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2023-12-19 04:50:03,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:50:03,638 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:03,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:50:03,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:50:03,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:50:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1841720627, now seen corresponding path program 1 times [2023-12-19 04:50:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:50:03,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734566755] [2023-12-19 04:50:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:50:03,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:50:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:50:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-19 04:50:04,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:50:04,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734566755] [2023-12-19 04:50:04,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734566755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:50:04,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:50:04,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:50:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578763269] [2023-12-19 04:50:04,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:50:04,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:50:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:50:04,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:50:04,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:50:04,269 INFO L87 Difference]: Start difference. First operand 153857 states and 177673 transitions. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 04:50:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:50:15,322 INFO L93 Difference]: Finished difference Result 482747 states and 564873 transitions. [2023-12-19 04:50:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:50:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 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 1020 [2023-12-19 04:50:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:50:15,802 INFO L225 Difference]: With dead ends: 482747 [2023-12-19 04:50:15,802 INFO L226 Difference]: Without dead ends: 331621 [2023-12-19 04:50:15,884 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 04:50:15,885 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 3259 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 8889 mSolverCounterSat, 2743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 11632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2743 IncrementalHoareTripleChecker+Valid, 8889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:50:15,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3259 Valid, 1423 Invalid, 11632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2743 Valid, 8889 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-12-19 04:50:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331621 states. [2023-12-19 04:50:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331621 to 323268. [2023-12-19 04:50:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323268 states, 323267 states have (on average 1.148685142622043) internal successors, (371332), 323267 states have internal predecessors, (371332), 0 states have call successors, (0), 0 states 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 04:50:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323268 states to 323268 states and 371332 transitions. [2023-12-19 04:50:20,963 INFO L78 Accepts]: Start accepts. Automaton has 323268 states and 371332 transitions. Word has length 1020 [2023-12-19 04:50:20,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:50:20,964 INFO L495 AbstractCegarLoop]: Abstraction has 323268 states and 371332 transitions. [2023-12-19 04:50:20,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 04:50:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 323268 states and 371332 transitions. [2023-12-19 04:50:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2023-12-19 04:50:20,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:50:20,995 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:20,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:50:20,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:50:20,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:50:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash -905559044, now seen corresponding path program 1 times [2023-12-19 04:50:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:50:20,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489011591] [2023-12-19 04:50:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:50:20,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:50:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:50:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 357 proven. 271 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-19 04:50:22,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:50:22,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489011591] [2023-12-19 04:50:22,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489011591] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:50:22,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403273938] [2023-12-19 04:50:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:50:22,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:50:22,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:50:22,900 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 04:50:22,902 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 04:50:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:50:23,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:50:23,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:50:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2023-12-19 04:50:23,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:50:23,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403273938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:50:23,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:50:23,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 04:50:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121040704] [2023-12-19 04:50:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:50:23,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:50:23,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:50:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:50:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:50:23,308 INFO L87 Difference]: Start difference. First operand 323268 states and 371332 transitions. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 04:50:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:50:30,264 INFO L93 Difference]: Finished difference Result 706607 states and 817400 transitions. [2023-12-19 04:50:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:50:30,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 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 1029 [2023-12-19 04:50:30,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:50:30,822 INFO L225 Difference]: With dead ends: 706607 [2023-12-19 04:50:30,822 INFO L226 Difference]: Without dead ends: 386070 [2023-12-19 04:50:31,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 1029 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:50:31,172 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1623 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4854 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 5834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 4854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:50:31,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 1132 Invalid, 5834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [980 Valid, 4854 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-19 04:50:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386070 states. [2023-12-19 04:50:35,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386070 to 375138. [2023-12-19 04:50:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375138 states, 375137 states have (on average 1.1582221961576704) internal successors, (434492), 375137 states have internal predecessors, (434492), 0 states have call successors, (0), 0 states 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 04:50:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375138 states to 375138 states and 434492 transitions. [2023-12-19 04:50:36,374 INFO L78 Accepts]: Start accepts. Automaton has 375138 states and 434492 transitions. Word has length 1029 [2023-12-19 04:50:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:50:36,375 INFO L495 AbstractCegarLoop]: Abstraction has 375138 states and 434492 transitions. [2023-12-19 04:50:36,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 04:50:36,375 INFO L276 IsEmpty]: Start isEmpty. Operand 375138 states and 434492 transitions. [2023-12-19 04:50:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2023-12-19 04:50:36,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:50:36,394 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:36,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 04:50:36,602 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,SelfDestructingSolverStorable12 [2023-12-19 04:50:36,603 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:50:36,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:50:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1902013841, now seen corresponding path program 1 times [2023-12-19 04:50:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:50:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103542975] [2023-12-19 04:50:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:50:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:50:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:50:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2023-12-19 04:50:37,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:50:37,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103542975] [2023-12-19 04:50:37,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103542975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:50:37,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:50:37,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:50:37,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823243782] [2023-12-19 04:50:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:50:37,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:50:37,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:50:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:50:37,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:50:37,180 INFO L87 Difference]: Start difference. First operand 375138 states and 434492 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 04:50:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:50:45,049 INFO L93 Difference]: Finished difference Result 817210 states and 951560 transitions. [2023-12-19 04:50:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:50:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 1141 [2023-12-19 04:50:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:50:46,026 INFO L225 Difference]: With dead ends: 817210 [2023-12-19 04:50:46,026 INFO L226 Difference]: Without dead ends: 444803 [2023-12-19 04:50:46,178 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 04:50:46,179 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 1564 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4195 mSolverCounterSat, 1442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 5637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1442 IncrementalHoareTripleChecker+Valid, 4195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:50:46,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 1538 Invalid, 5637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1442 Valid, 4195 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-19 04:50:46,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444803 states. [2023-12-19 04:50:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444803 to 431113. [2023-12-19 04:50:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431113 states, 431112 states have (on average 1.161526471079441) internal successors, (500748), 431112 states have internal predecessors, (500748), 0 states have call successors, (0), 0 states 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 04:50:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431113 states to 431113 states and 500748 transitions. [2023-12-19 04:50:52,769 INFO L78 Accepts]: Start accepts. Automaton has 431113 states and 500748 transitions. Word has length 1141 [2023-12-19 04:50:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:50:52,769 INFO L495 AbstractCegarLoop]: Abstraction has 431113 states and 500748 transitions. [2023-12-19 04:50:52,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 04:50:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 431113 states and 500748 transitions. [2023-12-19 04:50:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2023-12-19 04:50:52,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:50:52,784 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:50:52,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:50:52,784 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:50:52,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:50:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1569670329, now seen corresponding path program 1 times [2023-12-19 04:50:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:50:52,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091541169] [2023-12-19 04:50:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:50:52,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:50:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:50:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 219 proven. 485 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 04:50:55,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:50:55,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091541169] [2023-12-19 04:50:55,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091541169] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:50:55,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905665401] [2023-12-19 04:50:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:50:55,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:50:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:50:55,419 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 04:50:55,421 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 04:50:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:50:55,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 1358 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:50:55,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:50:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-19 04:50:55,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:50:55,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905665401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:50:55,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:50:55,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 04:50:55,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128737971] [2023-12-19 04:50:55,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:50:55,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:50:55,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:50:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:50:55,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:50:55,818 INFO L87 Difference]: Start difference. First operand 431113 states and 500748 transitions. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 04:51:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:51:02,989 INFO L93 Difference]: Finished difference Result 869058 states and 1008387 transitions. [2023-12-19 04:51:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:51:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 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 1212 [2023-12-19 04:51:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:51:03,949 INFO L225 Difference]: With dead ends: 869058 [2023-12-19 04:51:03,949 INFO L226 Difference]: Without dead ends: 440676 [2023-12-19 04:51:04,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1217 GetRequests, 1211 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:51:04,051 INFO L413 NwaCegarLoop]: 2881 mSDtfsCounter, 1526 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 1474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1474 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:51:04,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 3061 Invalid, 5149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1474 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-19 04:51:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440676 states. [2023-12-19 04:51:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440676 to 422916. [2023-12-19 04:51:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422916 states, 422915 states have (on average 1.1243110317676128) internal successors, (475488), 422915 states have internal predecessors, (475488), 0 states have call successors, (0), 0 states 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 04:51:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422916 states to 422916 states and 475488 transitions. [2023-12-19 04:51:09,946 INFO L78 Accepts]: Start accepts. Automaton has 422916 states and 475488 transitions. Word has length 1212 [2023-12-19 04:51:09,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:51:09,947 INFO L495 AbstractCegarLoop]: Abstraction has 422916 states and 475488 transitions. [2023-12-19 04:51:09,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 04:51:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 422916 states and 475488 transitions. [2023-12-19 04:51:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2023-12-19 04:51:09,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:51:09,967 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 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 04:51:09,978 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 04:51:10,167 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 04:51:10,169 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:51:10,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:51:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash 488549644, now seen corresponding path program 1 times [2023-12-19 04:51:10,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:51:10,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259426752] [2023-12-19 04:51:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:51:10,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:51:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:51:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 1102 proven. 218 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-19 04:51:13,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:51:13,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259426752] [2023-12-19 04:51:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259426752] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:51:13,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431670343] [2023-12-19 04:51:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:51:13,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:51:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:51:13,699 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 04:51:13,701 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 04:51:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:51:14,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:51:14,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:51:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 1392 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-12-19 04:51:14,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:51:14,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431670343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:51:14,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:51:14,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 04:51:14,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558222771] [2023-12-19 04:51:14,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:51:14,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:51:14,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:51:14,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:51:14,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:51:14,581 INFO L87 Difference]: Start difference. First operand 422916 states and 475488 transitions. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states 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 04:51:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:51:21,872 INFO L93 Difference]: Finished difference Result 945468 states and 1062807 transitions. [2023-12-19 04:51:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:51:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 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 1306 [2023-12-19 04:51:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:51:23,000 INFO L225 Difference]: With dead ends: 945468 [2023-12-19 04:51:23,001 INFO L226 Difference]: Without dead ends: 519822 [2023-12-19 04:51:23,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1305 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:51:23,186 INFO L413 NwaCegarLoop]: 2519 mSDtfsCounter, 1484 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 1411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 5181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1411 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:51:23,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 2607 Invalid, 5181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1411 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-19 04:51:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519822 states. [2023-12-19 04:51:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519822 to 482951. [2023-12-19 04:51:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482951 states, 482950 states have (on average 1.102546847499741) internal successors, (532475), 482950 states have internal predecessors, (532475), 0 states have call successors, (0), 0 states 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 04:51:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482951 states to 482951 states and 532475 transitions. [2023-12-19 04:51:30,197 INFO L78 Accepts]: Start accepts. Automaton has 482951 states and 532475 transitions. Word has length 1306 [2023-12-19 04:51:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:51:30,198 INFO L495 AbstractCegarLoop]: Abstraction has 482951 states and 532475 transitions. [2023-12-19 04:51:30,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states 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 04:51:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 482951 states and 532475 transitions. [2023-12-19 04:51:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1491 [2023-12-19 04:51:30,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:51:30,556 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:51:30,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 04:51:30,764 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 04:51:30,765 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:51:30,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:51:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2137447700, now seen corresponding path program 1 times [2023-12-19 04:51:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:51:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341308228] [2023-12-19 04:51:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:51:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:51:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:51:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 765 proven. 485 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-12-19 04:51:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:51:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341308228] [2023-12-19 04:51:33,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341308228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:51:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918797599] [2023-12-19 04:51:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:51:33,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:51:33,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:51:33,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:51:33,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 04:51:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:51:34,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:51:34,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:51:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2023-12-19 04:51:34,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:51:34,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918797599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:51:34,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:51:34,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 04:51:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959999730] [2023-12-19 04:51:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:51:34,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:51:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:51:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:51:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:51:34,508 INFO L87 Difference]: Start difference. First operand 482951 states and 532475 transitions. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 04:51:41,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:51:41,909 INFO L93 Difference]: Finished difference Result 963183 states and 1062234 transitions. [2023-12-19 04:51:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:51:41,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 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 1490 [2023-12-19 04:51:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:51:42,683 INFO L225 Difference]: With dead ends: 963183 [2023-12-19 04:51:42,683 INFO L226 Difference]: Without dead ends: 482963 [2023-12-19 04:51:43,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1495 GetRequests, 1489 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:51:43,215 INFO L413 NwaCegarLoop]: 2858 mSDtfsCounter, 1370 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4414 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 5053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 4414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:51:43,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 3050 Invalid, 5053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [639 Valid, 4414 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-19 04:51:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482963 states. [2023-12-19 04:51:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482963 to 482947. [2023-12-19 04:51:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482947 states, 482946 states have (on average 1.0818807899848015) internal successors, (522490), 482946 states have internal predecessors, (522490), 0 states have call successors, (0), 0 states 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 04:51:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482947 states to 482947 states and 522490 transitions. [2023-12-19 04:51:50,131 INFO L78 Accepts]: Start accepts. Automaton has 482947 states and 522490 transitions. Word has length 1490 [2023-12-19 04:51:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:51:50,132 INFO L495 AbstractCegarLoop]: Abstraction has 482947 states and 522490 transitions. [2023-12-19 04:51:50,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 04:51:50,132 INFO L276 IsEmpty]: Start isEmpty. Operand 482947 states and 522490 transitions. [2023-12-19 04:51:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1513 [2023-12-19 04:51:50,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:51:50,155 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, 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, 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:51:50,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 04:51:50,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 04:51:50,362 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:51:50,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:51:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 20945841, now seen corresponding path program 1 times [2023-12-19 04:51:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:51:50,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245097957] [2023-12-19 04:51:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:51:50,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:51:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:51:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1547 backedges. 814 proven. 485 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-19 04:51:53,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:51:53,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245097957] [2023-12-19 04:51:53,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245097957] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:51:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115950245] [2023-12-19 04:51:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:51:53,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:51:53,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:51:53,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:51:53,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 04:51:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:51:53,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:51:53,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:51:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1547 backedges. 1299 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-19 04:51:55,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:51:55,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115950245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:51:55,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:51:55,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 04:51:55,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937585927] [2023-12-19 04:51:55,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:51:55,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:51:55,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:51:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:51:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:51:55,463 INFO L87 Difference]: Start difference. First operand 482947 states and 522490 transitions. Second operand has 4 states, 4 states have (on average 324.75) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states 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 04:52:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:52:05,811 INFO L93 Difference]: Finished difference Result 1133751 states and 1231916 transitions. [2023-12-19 04:52:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:52:05,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 324.75) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 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 1512 [2023-12-19 04:52:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:52:06,836 INFO L225 Difference]: With dead ends: 1133751 [2023-12-19 04:52:06,836 INFO L226 Difference]: Without dead ends: 611197 [2023-12-19 04:52:07,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1517 GetRequests, 1510 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:52:07,027 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 2112 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 7095 mSolverCounterSat, 2097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 9192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2097 IncrementalHoareTripleChecker+Valid, 7095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:52:07,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 908 Invalid, 9192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2097 Valid, 7095 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-19 04:52:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611197 states. [2023-12-19 04:52:13,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611197 to 559314. [2023-12-19 04:52:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559314 states, 559313 states have (on average 1.0529560371384181) internal successors, (588932), 559313 states have internal predecessors, (588932), 0 states have call successors, (0), 0 states 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 04:52:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559314 states to 559314 states and 588932 transitions. [2023-12-19 04:52:15,187 INFO L78 Accepts]: Start accepts. Automaton has 559314 states and 588932 transitions. Word has length 1512 [2023-12-19 04:52:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:52:15,187 INFO L495 AbstractCegarLoop]: Abstraction has 559314 states and 588932 transitions. [2023-12-19 04:52:15,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 324.75) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states 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 04:52:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 559314 states and 588932 transitions. [2023-12-19 04:52:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2023-12-19 04:52:15,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:52:15,211 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, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:52:15,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 04:52:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 04:52:15,417 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:52:15,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:52:15,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1608919874, now seen corresponding path program 1 times [2023-12-19 04:52:15,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:52:15,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123427661] [2023-12-19 04:52:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:52:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:52:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:52:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 979 proven. 0 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2023-12-19 04:52:16,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:52:16,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123427661] [2023-12-19 04:52:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123427661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:52:16,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:52:16,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:52:16,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629212302] [2023-12-19 04:52:16,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:52:16,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:52:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:52:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:52:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:52:16,501 INFO L87 Difference]: Start difference. First operand 559314 states and 588932 transitions. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 04:52:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:52:23,531 INFO L93 Difference]: Finished difference Result 1115902 states and 1174948 transitions. [2023-12-19 04:52:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:52:23,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 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 1578 [2023-12-19 04:52:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:52:24,379 INFO L225 Difference]: With dead ends: 1115902 [2023-12-19 04:52:24,380 INFO L226 Difference]: Without dead ends: 557954 [2023-12-19 04:52:24,844 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 04:52:24,844 INFO L413 NwaCegarLoop]: 2472 mSDtfsCounter, 1266 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:52:24,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 2658 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 04:52:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557954 states. [2023-12-19 04:52:30,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557954 to 557946. [2023-12-19 04:52:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557946 states, 557945 states have (on average 1.052738173117422) internal successors, (587370), 557945 states have internal predecessors, (587370), 0 states have call successors, (0), 0 states 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 04:52:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557946 states to 557946 states and 587370 transitions. [2023-12-19 04:52:32,663 INFO L78 Accepts]: Start accepts. Automaton has 557946 states and 587370 transitions. Word has length 1578 [2023-12-19 04:52:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:52:32,664 INFO L495 AbstractCegarLoop]: Abstraction has 557946 states and 587370 transitions. [2023-12-19 04:52:32,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 04:52:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 557946 states and 587370 transitions.