/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:03:51,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:03:51,412 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 04:03:51,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:03:51,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:03:51,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:03:51,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:03:51,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:03:51,447 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:03:51,448 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:03:51,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:03:51,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:03:51,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:03:51,449 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:03:51,449 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:03:51,449 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:03:51,449 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:03:51,450 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:03:51,450 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:03:51,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:03:51,450 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:03:51,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:03:51,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:03:51,451 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:03:51,451 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:03:51,452 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:03:51,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:03:51,452 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:03:51,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:03:51,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:03:51,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:03:51,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:03:51,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:03:51,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:03:51,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:03:51,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:03:51,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:03:51,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:03:51,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:03:51,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:03:51,455 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:03:51,458 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:03:51,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:03:51,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:03:51,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:03:51,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:03:51,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:03:51,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:03:51,687 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:03:51,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52.c [2023-12-19 04:03:52,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:03:53,023 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:03:53,025 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label52.c [2023-12-19 04:03:53,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e896ca7/26d68978d34b4061be38b3e990834b71/FLAGb5f8d01fc [2023-12-19 04:03:53,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e896ca7/26d68978d34b4061be38b3e990834b71 [2023-12-19 04:03:53,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:03:53,074 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:03:53,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:03:53,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:03:53,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:03:53,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:03:53" (1/1) ... [2023-12-19 04:03:53,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a869e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:53, skipping insertion in model container [2023-12-19 04:03:53,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:03:53" (1/1) ... [2023-12-19 04:03:53,180 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:03:53,403 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label52.c[9091,9104] [2023-12-19 04:03:54,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:03:54,049 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:03:54,068 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label52.c[9091,9104] [2023-12-19 04:03:54,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:03:54,461 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:03:54,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54 WrapperNode [2023-12-19 04:03:54,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:03:54,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:03:54,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:03:54,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:03:54,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:54,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,057 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 04:03:55,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:03:55,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:03:55,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:03:55,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:03:55,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,165 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,293 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 04:03:55,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:03:55,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:03:55,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:03:55,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:03:55,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (1/1) ... [2023-12-19 04:03:55,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:03:55,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:03:55,672 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 04:03:55,690 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 04:03:55,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:03:55,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:03:55,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:03:55,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:03:55,763 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:03:55,764 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:03:59,637 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:03:59,677 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:03:59,677 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:03:59,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:03:59 BoogieIcfgContainer [2023-12-19 04:03:59,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:03:59,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:03:59,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:03:59,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:03:59,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:03:53" (1/3) ... [2023-12-19 04:03:59,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd6d28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:03:59, skipping insertion in model container [2023-12-19 04:03:59,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:03:54" (2/3) ... [2023-12-19 04:03:59,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd6d28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:03:59, skipping insertion in model container [2023-12-19 04:03:59,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:03:59" (3/3) ... [2023-12-19 04:03:59,683 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52.c [2023-12-19 04:03:59,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:03:59,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:03:59,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:03:59,741 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;@2bfc0b5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:03:59,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:03:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:03:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 04:03:59,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:03:59,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:03:59,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:03:59,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:03:59,761 INFO L85 PathProgramCache]: Analyzing trace with hash -596345556, now seen corresponding path program 1 times [2023-12-19 04:03:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:03:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224751761] [2023-12-19 04:03:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:03:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:03:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:03:59,909 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 04:03:59,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:03:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224751761] [2023-12-19 04:03:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224751761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:03:59,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:03:59,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:03:59,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167841120] [2023-12-19 04:03:59,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:03:59,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:03:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:03:59,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:03:59,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:03:59,945 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:00,009 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 04:04:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:04:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-19 04:04:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:00,025 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 04:04:00,025 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 04:04:00,030 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 04:04:00,032 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:00,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:04:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 04:04:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 04:04:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 04:04:00,109 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 63 [2023-12-19 04:04:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:00,109 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 04:04:00,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 04:04:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 04:04:00,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:00,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:04:00,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:04:00,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:00,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1643738853, now seen corresponding path program 1 times [2023-12-19 04:04:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:00,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641080750] [2023-12-19 04:04:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:00,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:00,257 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 04:04:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641080750] [2023-12-19 04:04:00,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641080750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:00,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330756883] [2023-12-19 04:04:00,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:00,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:00,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:00,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:00,264 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:04,018 INFO L93 Difference]: Finished difference Result 2905 states and 5325 transitions. [2023-12-19 04:04:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:04,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-19 04:04:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:04,028 INFO L225 Difference]: With dead ends: 2905 [2023-12-19 04:04:04,028 INFO L226 Difference]: Without dead ends: 1872 [2023-12-19 04:04:04,030 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 04:04:04,031 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 825 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:04,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1090 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 04:04:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2023-12-19 04:04:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1858. [2023-12-19 04:04:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.5444264943457189) internal successors, (2868), 1857 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states 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 04:04:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2868 transitions. [2023-12-19 04:04:04,080 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2868 transitions. Word has length 63 [2023-12-19 04:04:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:04,081 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2868 transitions. [2023-12-19 04:04:04,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2868 transitions. [2023-12-19 04:04:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 04:04:04,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:04,117 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, 2, 2, 2, 2, 2, 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] [2023-12-19 04:04:04,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:04:04,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:04,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash -949559770, now seen corresponding path program 1 times [2023-12-19 04:04:04,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:04,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113573104] [2023-12-19 04:04:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:04,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:04:04,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113573104] [2023-12-19 04:04:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113573104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:04,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040956329] [2023-12-19 04:04:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:04,323 INFO L87 Difference]: Start difference. First operand 1858 states and 2868 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 04:04:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:07,425 INFO L93 Difference]: Finished difference Result 5316 states and 8228 transitions. [2023-12-19 04:04:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-19 04:04:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:07,446 INFO L225 Difference]: With dead ends: 5316 [2023-12-19 04:04:07,446 INFO L226 Difference]: Without dead ends: 3459 [2023-12-19 04:04:07,452 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 04:04:07,455 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:07,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1190 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 04:04:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2023-12-19 04:04:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3458. [2023-12-19 04:04:07,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.380676887474689) internal successors, (4773), 3457 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states 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 04:04:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4773 transitions. [2023-12-19 04:04:07,521 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4773 transitions. Word has length 135 [2023-12-19 04:04:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:07,525 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4773 transitions. [2023-12-19 04:04:07,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 04:04:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4773 transitions. [2023-12-19 04:04:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 04:04:07,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:07,532 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, 2, 2, 2, 2, 2, 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] [2023-12-19 04:04:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:04:07,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1392869027, now seen corresponding path program 1 times [2023-12-19 04:04:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010148423] [2023-12-19 04:04:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:04:08,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:08,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010148423] [2023-12-19 04:04:08,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010148423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:08,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:08,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:08,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951588391] [2023-12-19 04:04:08,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:08,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:04:08,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:04:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:04:08,009 INFO L87 Difference]: Start difference. First operand 3458 states and 4773 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 04:04:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:12,199 INFO L93 Difference]: Finished difference Result 10869 states and 14767 transitions. [2023-12-19 04:04:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:04:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-19 04:04:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:12,224 INFO L225 Difference]: With dead ends: 10869 [2023-12-19 04:04:12,224 INFO L226 Difference]: Without dead ends: 7412 [2023-12-19 04:04:12,232 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 04:04:12,238 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2581 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:12,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 04:04:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2023-12-19 04:04:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 7411. [2023-12-19 04:04:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 7410 states have (on average 1.269905533063428) internal successors, (9410), 7410 states have internal predecessors, (9410), 0 states have call successors, (0), 0 states 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 04:04:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 9410 transitions. [2023-12-19 04:04:12,334 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 9410 transitions. Word has length 149 [2023-12-19 04:04:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:12,334 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 9410 transitions. [2023-12-19 04:04:12,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 04:04:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 9410 transitions. [2023-12-19 04:04:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-19 04:04:12,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:12,336 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 04:04:12,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:04:12,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:12,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1101318337, now seen corresponding path program 1 times [2023-12-19 04:04:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:12,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795763536] [2023-12-19 04:04:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:12,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-19 04:04:12,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:12,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795763536] [2023-12-19 04:04:12,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795763536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:12,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:12,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700589063] [2023-12-19 04:04:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:12,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:12,567 INFO L87 Difference]: Start difference. First operand 7411 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 04:04:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:15,781 INFO L93 Difference]: Finished difference Result 20356 states and 26251 transitions. [2023-12-19 04:04:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:15,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 230 [2023-12-19 04:04:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:15,820 INFO L225 Difference]: With dead ends: 20356 [2023-12-19 04:04:15,820 INFO L226 Difference]: Without dead ends: 13733 [2023-12-19 04:04:15,830 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 04:04:15,830 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:15,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 978 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:04:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2023-12-19 04:04:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 12936. [2023-12-19 04:04:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 12935 states have (on average 1.2152299961345188) internal successors, (15719), 12935 states have internal predecessors, (15719), 0 states have call successors, (0), 0 states 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 04:04:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 15719 transitions. [2023-12-19 04:04:16,050 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 15719 transitions. Word has length 230 [2023-12-19 04:04:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:16,051 INFO L495 AbstractCegarLoop]: Abstraction has 12936 states and 15719 transitions. [2023-12-19 04:04:16,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 04:04:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 15719 transitions. [2023-12-19 04:04:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-19 04:04:16,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:16,055 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:04:16,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:04:16,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:16,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1191048561, now seen corresponding path program 1 times [2023-12-19 04:04:16,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:16,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433831200] [2023-12-19 04:04:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:04:16,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:16,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433831200] [2023-12-19 04:04:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433831200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:16,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:16,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037246567] [2023-12-19 04:04:16,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:16,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:16,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:16,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:16,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:16,230 INFO L87 Difference]: Start difference. First operand 12936 states and 15719 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 04:04:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:19,254 INFO L93 Difference]: Finished difference Result 31391 states and 39118 transitions. [2023-12-19 04:04:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:19,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2023-12-19 04:04:19,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:19,290 INFO L225 Difference]: With dead ends: 31391 [2023-12-19 04:04:19,291 INFO L226 Difference]: Without dead ends: 19243 [2023-12-19 04:04:19,297 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 04:04:19,298 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 857 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:19,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 924 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:04:19,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2023-12-19 04:04:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 18446. [2023-12-19 04:04:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18445 states have (on average 1.20243968555164) internal successors, (22179), 18445 states have internal predecessors, (22179), 0 states have call successors, (0), 0 states 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 04:04:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 22179 transitions. [2023-12-19 04:04:19,517 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 22179 transitions. Word has length 262 [2023-12-19 04:04:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:19,518 INFO L495 AbstractCegarLoop]: Abstraction has 18446 states and 22179 transitions. [2023-12-19 04:04:19,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 04:04:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 22179 transitions. [2023-12-19 04:04:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-19 04:04:19,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:19,523 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:04:19,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:04:19,523 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:19,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1255132825, now seen corresponding path program 1 times [2023-12-19 04:04:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:19,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253680665] [2023-12-19 04:04:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:04:19,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253680665] [2023-12-19 04:04:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253680665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:19,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:19,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:19,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585511346] [2023-12-19 04:04:19,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:19,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:19,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:19,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:19,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:19,758 INFO L87 Difference]: Start difference. First operand 18446 states and 22179 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 04:04:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:22,937 INFO L93 Difference]: Finished difference Result 42411 states and 52036 transitions. [2023-12-19 04:04:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:22,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 351 [2023-12-19 04:04:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:22,992 INFO L225 Difference]: With dead ends: 42411 [2023-12-19 04:04:22,992 INFO L226 Difference]: Without dead ends: 24753 [2023-12-19 04:04:23,010 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 04:04:23,011 INFO L413 NwaCegarLoop]: 1794 mSDtfsCounter, 806 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:23,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1944 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 04:04:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24753 states. [2023-12-19 04:04:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24753 to 23961. [2023-12-19 04:04:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23961 states, 23960 states have (on average 1.1787145242070116) internal successors, (28242), 23960 states have internal predecessors, (28242), 0 states have call successors, (0), 0 states 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 04:04:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23961 states to 23961 states and 28242 transitions. [2023-12-19 04:04:23,284 INFO L78 Accepts]: Start accepts. Automaton has 23961 states and 28242 transitions. Word has length 351 [2023-12-19 04:04:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:23,285 INFO L495 AbstractCegarLoop]: Abstraction has 23961 states and 28242 transitions. [2023-12-19 04:04:23,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 04:04:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 23961 states and 28242 transitions. [2023-12-19 04:04:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-19 04:04:23,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:23,290 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:04:23,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:04:23,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:23,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash 976920973, now seen corresponding path program 1 times [2023-12-19 04:04:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:23,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072150306] [2023-12-19 04:04:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-19 04:04:23,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:23,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072150306] [2023-12-19 04:04:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072150306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:23,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881965456] [2023-12-19 04:04:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:23,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:04:23,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:23,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:04:23,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:04:23,674 INFO L87 Difference]: Start difference. First operand 23961 states and 28242 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:29,846 INFO L93 Difference]: Finished difference Result 89063 states and 105283 transitions. [2023-12-19 04:04:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:04:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2023-12-19 04:04:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:29,939 INFO L225 Difference]: With dead ends: 89063 [2023-12-19 04:04:29,939 INFO L226 Difference]: Without dead ends: 65890 [2023-12-19 04:04:29,971 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 04:04:29,972 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1731 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6613 mSolverCounterSat, 1140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 7753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1140 IncrementalHoareTripleChecker+Valid, 6613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:29,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 676 Invalid, 7753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1140 Valid, 6613 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-19 04:04:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65890 states. [2023-12-19 04:04:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65890 to 64188. [2023-12-19 04:04:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64188 states, 64187 states have (on average 1.1559350024148192) internal successors, (74196), 64187 states have internal predecessors, (74196), 0 states have call successors, (0), 0 states 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 04:04:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64188 states to 64188 states and 74196 transitions. [2023-12-19 04:04:30,845 INFO L78 Accepts]: Start accepts. Automaton has 64188 states and 74196 transitions. Word has length 360 [2023-12-19 04:04:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:30,845 INFO L495 AbstractCegarLoop]: Abstraction has 64188 states and 74196 transitions. [2023-12-19 04:04:30,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 64188 states and 74196 transitions. [2023-12-19 04:04:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-19 04:04:30,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:30,851 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, 4, 4, 4, 4, 4, 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, 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] [2023-12-19 04:04:30,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:04:30,851 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:30,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:30,851 INFO L85 PathProgramCache]: Analyzing trace with hash 124929498, now seen corresponding path program 1 times [2023-12-19 04:04:30,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:30,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740523008] [2023-12-19 04:04:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:30,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-19 04:04:31,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:31,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740523008] [2023-12-19 04:04:31,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740523008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:31,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:31,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202792584] [2023-12-19 04:04:31,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:31,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:31,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:31,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:31,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:31,461 INFO L87 Difference]: Start difference. First operand 64188 states and 74196 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 04:04:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:34,742 INFO L93 Difference]: Finished difference Result 140991 states and 162392 transitions. [2023-12-19 04:04:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:34,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 360 [2023-12-19 04:04:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:34,845 INFO L225 Difference]: With dead ends: 140991 [2023-12-19 04:04:34,845 INFO L226 Difference]: Without dead ends: 77591 [2023-12-19 04:04:34,878 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 04:04:34,879 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:34,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1197 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:04:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77591 states. [2023-12-19 04:04:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77591 to 76793. [2023-12-19 04:04:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76793 states, 76792 states have (on average 1.1395848525888113) internal successors, (87511), 76792 states have internal predecessors, (87511), 0 states have call successors, (0), 0 states 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 04:04:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76793 states to 76793 states and 87511 transitions. [2023-12-19 04:04:35,929 INFO L78 Accepts]: Start accepts. Automaton has 76793 states and 87511 transitions. Word has length 360 [2023-12-19 04:04:35,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:35,929 INFO L495 AbstractCegarLoop]: Abstraction has 76793 states and 87511 transitions. [2023-12-19 04:04:35,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 04:04:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 76793 states and 87511 transitions. [2023-12-19 04:04:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-12-19 04:04:35,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:35,937 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2023-12-19 04:04:35,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:04:35,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:35,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash -525049118, now seen corresponding path program 1 times [2023-12-19 04:04:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:35,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922880999] [2023-12-19 04:04:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-19 04:04:37,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:37,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922880999] [2023-12-19 04:04:37,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922880999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:04:37,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742203278] [2023-12-19 04:04:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:37,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:04:37,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:04:37,240 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 04:04:37,246 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 04:04:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:37,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:04:37,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:04:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-19 04:04:37,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:04:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742203278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:37,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:04:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:04:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183140420] [2023-12-19 04:04:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:37,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:04:37,626 INFO L87 Difference]: Start difference. First operand 76793 states and 87511 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 04:04:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:40,662 INFO L93 Difference]: Finished difference Result 152796 states and 174228 transitions. [2023-12-19 04:04:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 389 [2023-12-19 04:04:40,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:40,768 INFO L225 Difference]: With dead ends: 152796 [2023-12-19 04:04:40,769 INFO L226 Difference]: Without dead ends: 76791 [2023-12-19 04:04:40,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:04:40,814 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1122 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:40,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1440 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 04:04:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76791 states. [2023-12-19 04:04:41,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76791 to 76003. [2023-12-19 04:04:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76003 states, 76002 states have (on average 1.1082339938422674) internal successors, (84228), 76002 states have internal predecessors, (84228), 0 states have call successors, (0), 0 states 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 04:04:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76003 states to 76003 states and 84228 transitions. [2023-12-19 04:04:41,825 INFO L78 Accepts]: Start accepts. Automaton has 76003 states and 84228 transitions. Word has length 389 [2023-12-19 04:04:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:41,825 INFO L495 AbstractCegarLoop]: Abstraction has 76003 states and 84228 transitions. [2023-12-19 04:04:41,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 04:04:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 76003 states and 84228 transitions. [2023-12-19 04:04:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-19 04:04:41,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:41,835 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, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:04:41,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 04:04:42,041 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 04:04:42,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:42,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -958867008, now seen corresponding path program 1 times [2023-12-19 04:04:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:42,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555520961] [2023-12-19 04:04:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-19 04:04:42,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555520961] [2023-12-19 04:04:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555520961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:42,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:42,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:42,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397113622] [2023-12-19 04:04:42,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:42,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:42,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:42,385 INFO L87 Difference]: Start difference. First operand 76003 states and 84228 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 04:04:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:46,062 INFO L93 Difference]: Finished difference Result 170116 states and 190567 transitions. [2023-12-19 04:04:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 419 [2023-12-19 04:04:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:46,173 INFO L225 Difference]: With dead ends: 170116 [2023-12-19 04:04:46,173 INFO L226 Difference]: Without dead ends: 94901 [2023-12-19 04:04:46,210 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 04:04:46,210 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 902 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:46,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 907 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:04:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94901 states. [2023-12-19 04:04:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94901 to 93309. [2023-12-19 04:04:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93309 states, 93308 states have (on average 1.1153170146182536) internal successors, (104068), 93308 states have internal predecessors, (104068), 0 states have call successors, (0), 0 states 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 04:04:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93309 states to 93309 states and 104068 transitions. [2023-12-19 04:04:47,327 INFO L78 Accepts]: Start accepts. Automaton has 93309 states and 104068 transitions. Word has length 419 [2023-12-19 04:04:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:47,327 INFO L495 AbstractCegarLoop]: Abstraction has 93309 states and 104068 transitions. [2023-12-19 04:04:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 04:04:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 93309 states and 104068 transitions. [2023-12-19 04:04:47,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 04:04:47,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:47,337 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, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:04:47,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:04:47,337 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:47,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash 350888773, now seen corresponding path program 1 times [2023-12-19 04:04:47,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:47,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759878751] [2023-12-19 04:04:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:04:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759878751] [2023-12-19 04:04:47,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759878751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:47,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:47,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:47,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687410410] [2023-12-19 04:04:47,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:47,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:47,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:47,734 INFO L87 Difference]: Start difference. First operand 93309 states and 104068 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 04:04:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:51,186 INFO L93 Difference]: Finished difference Result 185839 states and 207364 transitions. [2023-12-19 04:04:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 457 [2023-12-19 04:04:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:51,327 INFO L225 Difference]: With dead ends: 185839 [2023-12-19 04:04:51,327 INFO L226 Difference]: Without dead ends: 93318 [2023-12-19 04:04:51,367 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 04:04:51,368 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 795 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:51,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1864 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:04:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93318 states. [2023-12-19 04:04:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93318 to 93299. [2023-12-19 04:04:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93299 states, 93298 states have (on average 1.0810521125854788) internal successors, (100860), 93298 states have internal predecessors, (100860), 0 states have call successors, (0), 0 states 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 04:04:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93299 states to 93299 states and 100860 transitions. [2023-12-19 04:04:52,425 INFO L78 Accepts]: Start accepts. Automaton has 93299 states and 100860 transitions. Word has length 457 [2023-12-19 04:04:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:52,426 INFO L495 AbstractCegarLoop]: Abstraction has 93299 states and 100860 transitions. [2023-12-19 04:04:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 04:04:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 93299 states and 100860 transitions. [2023-12-19 04:04:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-12-19 04:04:52,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:52,436 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:04:52,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:04:52,436 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:52,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1144203411, now seen corresponding path program 1 times [2023-12-19 04:04:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:52,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306938958] [2023-12-19 04:04:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:52,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-19 04:04:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306938958] [2023-12-19 04:04:52,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306938958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:52,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:52,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:52,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528667602] [2023-12-19 04:04:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:52,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:52,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:52,824 INFO L87 Difference]: Start difference. First operand 93299 states and 100860 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 04:04:56,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:56,086 INFO L93 Difference]: Finished difference Result 192870 states and 208132 transitions. [2023-12-19 04:04:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 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 485 [2023-12-19 04:04:56,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:56,233 INFO L225 Difference]: With dead ends: 192870 [2023-12-19 04:04:56,233 INFO L226 Difference]: Without dead ends: 99572 [2023-12-19 04:04:56,282 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 04:04:56,283 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 1023 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:56,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1624 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:04:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99572 states. [2023-12-19 04:04:57,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99572 to 92481. [2023-12-19 04:04:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92481 states, 92480 states have (on average 1.0580666089965398) internal successors, (97850), 92480 states have internal predecessors, (97850), 0 states have call successors, (0), 0 states 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 04:04:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92481 states to 92481 states and 97850 transitions. [2023-12-19 04:04:57,475 INFO L78 Accepts]: Start accepts. Automaton has 92481 states and 97850 transitions. Word has length 485 [2023-12-19 04:04:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:57,476 INFO L495 AbstractCegarLoop]: Abstraction has 92481 states and 97850 transitions. [2023-12-19 04:04:57,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 04:04:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 92481 states and 97850 transitions. [2023-12-19 04:04:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-19 04:04:57,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:57,487 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, 4, 4, 4, 4, 4, 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, 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] [2023-12-19 04:04:57,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:04:57,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:57,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1464186427, now seen corresponding path program 1 times [2023-12-19 04:04:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:57,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789754046] [2023-12-19 04:04:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-19 04:04:58,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:58,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789754046] [2023-12-19 04:04:58,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789754046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:04:58,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965609677] [2023-12-19 04:04:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:58,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:04:58,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:04:58,913 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 04:04:58,915 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 04:04:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:59,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:04:59,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:04:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 04:04:59,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:04:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965609677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:59,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:04:59,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:04:59,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459861832] [2023-12-19 04:04:59,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:59,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:59,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:59,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:59,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:04:59,240 INFO L87 Difference]: Start difference. First operand 92481 states and 97850 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:02,311 INFO L93 Difference]: Finished difference Result 180994 states and 192671 transitions. [2023-12-19 04:05:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 493 [2023-12-19 04:05:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:02,470 INFO L225 Difference]: With dead ends: 180994 [2023-12-19 04:05:02,470 INFO L226 Difference]: Without dead ends: 102687 [2023-12-19 04:05:02,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:05:02,513 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1126 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:02,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 365 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:05:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102687 states. [2023-12-19 04:05:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102687 to 102687. [2023-12-19 04:05:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102687 states, 102686 states have (on average 1.057554096955768) internal successors, (108596), 102686 states have internal predecessors, (108596), 0 states have call successors, (0), 0 states 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 04:05:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102687 states to 102687 states and 108596 transitions. [2023-12-19 04:05:03,787 INFO L78 Accepts]: Start accepts. Automaton has 102687 states and 108596 transitions. Word has length 493 [2023-12-19 04:05:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:03,788 INFO L495 AbstractCegarLoop]: Abstraction has 102687 states and 108596 transitions. [2023-12-19 04:05:03,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 102687 states and 108596 transitions. [2023-12-19 04:05:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-19 04:05:03,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:03,799 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, 4, 4, 4, 4, 4, 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, 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] [2023-12-19 04:05:03,809 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 04:05:04,000 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,SelfDestructingSolverStorable13 [2023-12-19 04:05:04,000 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:04,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1079612756, now seen corresponding path program 1 times [2023-12-19 04:05:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:04,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712465009] [2023-12-19 04:05:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-19 04:05:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:05,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712465009] [2023-12-19 04:05:05,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712465009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:05:05,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195040466] [2023-12-19 04:05:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:05,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:05:05,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:05:05,275 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 04:05:05,292 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 04:05:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:05,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:05:05,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:05:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-19 04:05:05,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:05:05,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195040466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:05,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:05:05,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-19 04:05:05,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427279714] [2023-12-19 04:05:05,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:05,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:05,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:05,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:05:05,920 INFO L87 Difference]: Start difference. First operand 102687 states and 108596 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:08,711 INFO L93 Difference]: Finished difference Result 195935 states and 207572 transitions. [2023-12-19 04:05:08,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:08,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 509 [2023-12-19 04:05:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:08,980 INFO L225 Difference]: With dead ends: 195935 [2023-12-19 04:05:08,980 INFO L226 Difference]: Without dead ends: 105845 [2023-12-19 04:05:08,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:05:08,996 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:08,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1118 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:05:09,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105845 states. [2023-12-19 04:05:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105845 to 105836. [2023-12-19 04:05:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105836 states, 105835 states have (on average 1.0517409174658667) internal successors, (111311), 105835 states have internal predecessors, (111311), 0 states have call successors, (0), 0 states 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 04:05:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105836 states to 105836 states and 111311 transitions. [2023-12-19 04:05:10,300 INFO L78 Accepts]: Start accepts. Automaton has 105836 states and 111311 transitions. Word has length 509 [2023-12-19 04:05:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:10,300 INFO L495 AbstractCegarLoop]: Abstraction has 105836 states and 111311 transitions. [2023-12-19 04:05:10,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 105836 states and 111311 transitions. [2023-12-19 04:05:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-19 04:05:10,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:10,311 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:05:10,316 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 04:05:10,512 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 04:05:10,513 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:10,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1332555812, now seen corresponding path program 1 times [2023-12-19 04:05:10,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:10,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794698449] [2023-12-19 04:05:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2023-12-19 04:05:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794698449] [2023-12-19 04:05:10,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794698449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:10,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:10,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:05:10,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885517871] [2023-12-19 04:05:10,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:10,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:10,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:10,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:10,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:10,747 INFO L87 Difference]: Start difference. First operand 105836 states and 111311 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 04:05:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:12,986 INFO L93 Difference]: Finished difference Result 196695 states and 207191 transitions. [2023-12-19 04:05:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:12,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 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 548 [2023-12-19 04:05:12,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:13,122 INFO L225 Difference]: With dead ends: 196695 [2023-12-19 04:05:13,123 INFO L226 Difference]: Without dead ends: 105033 [2023-12-19 04:05:13,168 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 04:05:13,168 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1557 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:13,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 273 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:05:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105033 states. [2023-12-19 04:05:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105033 to 105032. [2023-12-19 04:05:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105032 states, 105031 states have (on average 1.0504422503832203) internal successors, (110329), 105031 states have internal predecessors, (110329), 0 states have call successors, (0), 0 states 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 04:05:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105032 states to 105032 states and 110329 transitions. [2023-12-19 04:05:14,440 INFO L78 Accepts]: Start accepts. Automaton has 105032 states and 110329 transitions. Word has length 548 [2023-12-19 04:05:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:14,441 INFO L495 AbstractCegarLoop]: Abstraction has 105032 states and 110329 transitions. [2023-12-19 04:05:14,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 04:05:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 105032 states and 110329 transitions. [2023-12-19 04:05:14,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2023-12-19 04:05:14,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:14,452 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, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:14,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 04:05:14,453 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:14,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash 660680026, now seen corresponding path program 1 times [2023-12-19 04:05:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:14,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109239737] [2023-12-19 04:05:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:05:15,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:15,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109239737] [2023-12-19 04:05:15,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109239737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:15,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:15,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:15,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092810384] [2023-12-19 04:05:15,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:15,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:15,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:15,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:15,159 INFO L87 Difference]: Start difference. First operand 105032 states and 110329 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:17,834 INFO L93 Difference]: Finished difference Result 196681 states and 207026 transitions. [2023-12-19 04:05:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:17,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 562 [2023-12-19 04:05:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:17,961 INFO L225 Difference]: With dead ends: 196681 [2023-12-19 04:05:17,962 INFO L226 Difference]: Without dead ends: 105823 [2023-12-19 04:05:18,006 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 04:05:18,007 INFO L413 NwaCegarLoop]: 1701 mSDtfsCounter, 609 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:18,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1824 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:05:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105823 states. [2023-12-19 04:05:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105823 to 105820. [2023-12-19 04:05:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105820 states, 105819 states have (on average 1.0503217758625578) internal successors, (111144), 105819 states have internal predecessors, (111144), 0 states have call successors, (0), 0 states 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 04:05:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105820 states to 105820 states and 111144 transitions. [2023-12-19 04:05:19,732 INFO L78 Accepts]: Start accepts. Automaton has 105820 states and 111144 transitions. Word has length 562 [2023-12-19 04:05:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:19,733 INFO L495 AbstractCegarLoop]: Abstraction has 105820 states and 111144 transitions. [2023-12-19 04:05:19,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 105820 states and 111144 transitions. [2023-12-19 04:05:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-12-19 04:05:19,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:19,744 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:05:19,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 04:05:19,744 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:19,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1065663295, now seen corresponding path program 1 times [2023-12-19 04:05:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:19,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490474276] [2023-12-19 04:05:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 771 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-12-19 04:05:20,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:20,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490474276] [2023-12-19 04:05:20,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490474276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:20,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:20,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:20,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977662081] [2023-12-19 04:05:20,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:20,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:20,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:20,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:20,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:20,190 INFO L87 Difference]: Start difference. First operand 105820 states and 111144 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 04:05:23,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:23,916 INFO L93 Difference]: Finished difference Result 233706 states and 246445 transitions. [2023-12-19 04:05:23,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:23,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 593 [2023-12-19 04:05:23,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:24,106 INFO L225 Difference]: With dead ends: 233706 [2023-12-19 04:05:24,107 INFO L226 Difference]: Without dead ends: 142060 [2023-12-19 04:05:24,136 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 04:05:24,137 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 948 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:24,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 659 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:05:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142060 states. [2023-12-19 04:05:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142060 to 142056. [2023-12-19 04:05:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142056 states, 142055 states have (on average 1.049304846714301) internal successors, (149059), 142055 states have internal predecessors, (149059), 0 states have call successors, (0), 0 states 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 04:05:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142056 states to 142056 states and 149059 transitions. [2023-12-19 04:05:26,101 INFO L78 Accepts]: Start accepts. Automaton has 142056 states and 149059 transitions. Word has length 593 [2023-12-19 04:05:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:26,101 INFO L495 AbstractCegarLoop]: Abstraction has 142056 states and 149059 transitions. [2023-12-19 04:05:26,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 04:05:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 142056 states and 149059 transitions. [2023-12-19 04:05:26,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 04:05:26,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:26,118 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, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:05:26,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 04:05:26,119 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:26,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1791080804, now seen corresponding path program 1 times [2023-12-19 04:05:26,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:26,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792754118] [2023-12-19 04:05:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:26,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-19 04:05:26,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:26,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792754118] [2023-12-19 04:05:26,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792754118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:26,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:26,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:26,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702271187] [2023-12-19 04:05:26,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:26,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:26,355 INFO L87 Difference]: Start difference. First operand 142056 states and 149059 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 04:05:29,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:29,865 INFO L93 Difference]: Finished difference Result 284907 states and 298925 transitions. [2023-12-19 04:05:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:29,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 640 [2023-12-19 04:05:29,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:30,084 INFO L225 Difference]: With dead ends: 284907 [2023-12-19 04:05:30,085 INFO L226 Difference]: Without dead ends: 143639 [2023-12-19 04:05:30,162 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 04:05:30,162 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 914 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:30,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1398 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:05:30,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143639 states. [2023-12-19 04:05:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143639 to 142054. [2023-12-19 04:05:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142054 states, 142053 states have (on average 1.0413014860650602) internal successors, (147920), 142053 states have internal predecessors, (147920), 0 states have call successors, (0), 0 states 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 04:05:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142054 states to 142054 states and 147920 transitions. [2023-12-19 04:05:31,884 INFO L78 Accepts]: Start accepts. Automaton has 142054 states and 147920 transitions. Word has length 640 [2023-12-19 04:05:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:31,884 INFO L495 AbstractCegarLoop]: Abstraction has 142054 states and 147920 transitions. [2023-12-19 04:05:31,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 04:05:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 142054 states and 147920 transitions. [2023-12-19 04:05:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-19 04:05:31,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:31,895 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:05:31,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:05:31,896 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:31,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:31,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2112544700, now seen corresponding path program 1 times [2023-12-19 04:05:31,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:31,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954817441] [2023-12-19 04:05:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:31,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 947 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-12-19 04:05:32,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:32,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954817441] [2023-12-19 04:05:32,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954817441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:32,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:32,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:32,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900935424] [2023-12-19 04:05:32,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:32,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:32,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:32,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:32,456 INFO L87 Difference]: Start difference. First operand 142054 states and 147920 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 04:05:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:35,444 INFO L93 Difference]: Finished difference Result 271526 states and 283042 transitions. [2023-12-19 04:05:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:35,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 642 [2023-12-19 04:05:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:35,634 INFO L225 Difference]: With dead ends: 271526 [2023-12-19 04:05:35,634 INFO L226 Difference]: Without dead ends: 142067 [2023-12-19 04:05:35,702 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 04:05:35,702 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 771 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:35,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1707 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:05:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142067 states. [2023-12-19 04:05:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142067 to 142050. [2023-12-19 04:05:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142050 states, 142049 states have (on average 1.0384444804257686) internal successors, (147510), 142049 states have internal predecessors, (147510), 0 states have call successors, (0), 0 states 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 04:05:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142050 states to 142050 states and 147510 transitions. [2023-12-19 04:05:37,520 INFO L78 Accepts]: Start accepts. Automaton has 142050 states and 147510 transitions. Word has length 642 [2023-12-19 04:05:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:37,521 INFO L495 AbstractCegarLoop]: Abstraction has 142050 states and 147510 transitions. [2023-12-19 04:05:37,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 04:05:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 142050 states and 147510 transitions. [2023-12-19 04:05:37,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-12-19 04:05:37,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:37,535 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:05:37,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 04:05:37,535 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:37,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1419770537, now seen corresponding path program 1 times [2023-12-19 04:05:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:37,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015777986] [2023-12-19 04:05:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:37,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-19 04:05:37,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:37,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015777986] [2023-12-19 04:05:37,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015777986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:37,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:37,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:37,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370778988] [2023-12-19 04:05:37,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:37,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:37,907 INFO L87 Difference]: Start difference. First operand 142050 states and 147510 transitions. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 04:05:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:41,020 INFO L93 Difference]: Finished difference Result 285661 states and 296756 transitions. [2023-12-19 04:05:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:41,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 656 [2023-12-19 04:05:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:41,209 INFO L225 Difference]: With dead ends: 285661 [2023-12-19 04:05:41,210 INFO L226 Difference]: Without dead ends: 149907 [2023-12-19 04:05:41,445 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 04:05:41,446 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 666 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:41,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1734 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:05:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149907 states. [2023-12-19 04:05:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149907 to 143607. [2023-12-19 04:05:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143607 states, 143606 states have (on average 1.0360221717755524) internal successors, (148779), 143606 states have internal predecessors, (148779), 0 states have call successors, (0), 0 states 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 04:05:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143607 states to 143607 states and 148779 transitions. [2023-12-19 04:05:42,958 INFO L78 Accepts]: Start accepts. Automaton has 143607 states and 148779 transitions. Word has length 656 [2023-12-19 04:05:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:42,958 INFO L495 AbstractCegarLoop]: Abstraction has 143607 states and 148779 transitions. [2023-12-19 04:05:42,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 04:05:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 143607 states and 148779 transitions. [2023-12-19 04:05:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2023-12-19 04:05:42,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:42,972 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, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:05:42,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:05:42,972 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:42,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash 627846627, now seen corresponding path program 1 times [2023-12-19 04:05:42,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:42,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393932175] [2023-12-19 04:05:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:42,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 908 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-12-19 04:05:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393932175] [2023-12-19 04:05:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393932175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:43,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:43,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002112098] [2023-12-19 04:05:43,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:43,823 INFO L87 Difference]: Start difference. First operand 143607 states and 148779 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 04:05:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:46,746 INFO L93 Difference]: Finished difference Result 302187 states and 313072 transitions. [2023-12-19 04:05:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 681 [2023-12-19 04:05:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:47,113 INFO L225 Difference]: With dead ends: 302187 [2023-12-19 04:05:47,113 INFO L226 Difference]: Without dead ends: 159368 [2023-12-19 04:05:47,170 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 04:05:47,172 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 730 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:47,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 923 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:05:47,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159368 states. [2023-12-19 04:05:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159368 to 158567. [2023-12-19 04:05:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158567 states, 158566 states have (on average 1.0353039113050717) internal successors, (164164), 158566 states have internal predecessors, (164164), 0 states have call successors, (0), 0 states 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 04:05:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158567 states to 158567 states and 164164 transitions. [2023-12-19 04:05:49,224 INFO L78 Accepts]: Start accepts. Automaton has 158567 states and 164164 transitions. Word has length 681 [2023-12-19 04:05:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:49,225 INFO L495 AbstractCegarLoop]: Abstraction has 158567 states and 164164 transitions. [2023-12-19 04:05:49,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 04:05:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 158567 states and 164164 transitions. [2023-12-19 04:05:49,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2023-12-19 04:05:49,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:49,248 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:49,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 04:05:49,248 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:49,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1993832548, now seen corresponding path program 1 times [2023-12-19 04:05:49,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:49,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135761360] [2023-12-19 04:05:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:49,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 04:05:49,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:49,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135761360] [2023-12-19 04:05:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135761360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:49,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:05:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088748437] [2023-12-19 04:05:49,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:49,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:05:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:05:49,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:05:49,785 INFO L87 Difference]: Start difference. First operand 158567 states and 164164 transitions. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 04:05:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:55,646 INFO L93 Difference]: Finished difference Result 422783 states and 438158 transitions. [2023-12-19 04:05:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:05:55,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 719 [2023-12-19 04:05:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:56,202 INFO L225 Difference]: With dead ends: 422783 [2023-12-19 04:05:56,203 INFO L226 Difference]: Without dead ends: 265004 [2023-12-19 04:05:56,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:05:56,291 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1679 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 5991 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 6919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 5991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:56,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 855 Invalid, 6919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [928 Valid, 5991 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-19 04:05:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265004 states. [2023-12-19 04:05:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265004 to 242036. [2023-12-19 04:05:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242036 states, 242035 states have (on average 1.033247257628029) internal successors, (250082), 242035 states have internal predecessors, (250082), 0 states have call successors, (0), 0 states 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 04:05:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242036 states to 242036 states and 250082 transitions. [2023-12-19 04:05:59,745 INFO L78 Accepts]: Start accepts. Automaton has 242036 states and 250082 transitions. Word has length 719 [2023-12-19 04:05:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:59,746 INFO L495 AbstractCegarLoop]: Abstraction has 242036 states and 250082 transitions. [2023-12-19 04:05:59,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 04:05:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 242036 states and 250082 transitions. [2023-12-19 04:05:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2023-12-19 04:05:59,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:59,783 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:05:59,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 04:05:59,784 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:59,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1387185605, now seen corresponding path program 1 times [2023-12-19 04:05:59,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:59,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408979511] [2023-12-19 04:05:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:59,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 586 proven. 25 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-19 04:06:01,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408979511] [2023-12-19 04:06:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408979511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:06:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971285330] [2023-12-19 04:06:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:01,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:06:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:06:01,498 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 04:06:01,500 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 04:06:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:01,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 04:06:01,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:06:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 611 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-19 04:06:05,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:06:05,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971285330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:05,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:06:05,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-12-19 04:06:05,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757976692] [2023-12-19 04:06:05,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:05,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:06:05,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:05,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:06:05,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:06:05,413 INFO L87 Difference]: Start difference. First operand 242036 states and 250082 transitions. Second operand has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 04:06:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:11,345 INFO L93 Difference]: Finished difference Result 497637 states and 514306 transitions. [2023-12-19 04:06:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 04:06:11,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 900 [2023-12-19 04:06:11,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:11,780 INFO L225 Difference]: With dead ends: 497637 [2023-12-19 04:06:11,780 INFO L226 Difference]: Without dead ends: 266622 [2023-12-19 04:06:11,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:06:11,886 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1629 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 6246 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 6581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 6246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:11,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 1538 Invalid, 6581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 6246 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 04:06:12,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266622 states. [2023-12-19 04:06:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266622 to 259364. [2023-12-19 04:06:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259364 states, 259363 states have (on average 1.0331465937701214) internal successors, (267960), 259363 states have internal predecessors, (267960), 0 states have call successors, (0), 0 states 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 04:06:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259364 states to 259364 states and 267960 transitions. [2023-12-19 04:06:15,377 INFO L78 Accepts]: Start accepts. Automaton has 259364 states and 267960 transitions. Word has length 900 [2023-12-19 04:06:15,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:15,378 INFO L495 AbstractCegarLoop]: Abstraction has 259364 states and 267960 transitions. [2023-12-19 04:06:15,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 04:06:15,378 INFO L276 IsEmpty]: Start isEmpty. Operand 259364 states and 267960 transitions. [2023-12-19 04:06:15,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2023-12-19 04:06:15,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:15,398 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, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:15,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 04:06:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:06:15,601 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:15,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:15,601 INFO L85 PathProgramCache]: Analyzing trace with hash 88481601, now seen corresponding path program 1 times [2023-12-19 04:06:15,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:15,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905249789] [2023-12-19 04:06:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:15,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 1055 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 04:06:16,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:16,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905249789] [2023-12-19 04:06:16,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905249789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:16,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:16,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:06:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62354248] [2023-12-19 04:06:16,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:16,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:06:16,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:16,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:06:16,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:06:16,766 INFO L87 Difference]: Start difference. First operand 259364 states and 267960 transitions. Second operand has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 04:06:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:24,767 INFO L93 Difference]: Finished difference Result 583321 states and 603636 transitions. [2023-12-19 04:06:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:06:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 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 904 [2023-12-19 04:06:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:25,484 INFO L225 Difference]: With dead ends: 583321 [2023-12-19 04:06:25,484 INFO L226 Difference]: Without dead ends: 341278 [2023-12-19 04:06:25,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 04:06:25,584 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2239 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 8675 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 9893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 8675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:25,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 884 Invalid, 9893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 8675 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-19 04:06:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341278 states. [2023-12-19 04:06:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341278 to 297142. [2023-12-19 04:06:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297142 states, 297141 states have (on average 1.030581441134007) internal successors, (306228), 297141 states have internal predecessors, (306228), 0 states have call successors, (0), 0 states 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 04:06:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297142 states to 297142 states and 306228 transitions. [2023-12-19 04:06:29,944 INFO L78 Accepts]: Start accepts. Automaton has 297142 states and 306228 transitions. Word has length 904 [2023-12-19 04:06:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:29,944 INFO L495 AbstractCegarLoop]: Abstraction has 297142 states and 306228 transitions. [2023-12-19 04:06:29,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 04:06:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 297142 states and 306228 transitions. [2023-12-19 04:06:29,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2023-12-19 04:06:29,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:29,977 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, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:29,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:06:29,977 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:29,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:29,977 INFO L85 PathProgramCache]: Analyzing trace with hash 849787627, now seen corresponding path program 1 times [2023-12-19 04:06:29,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:29,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713914181] [2023-12-19 04:06:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 608 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2023-12-19 04:06:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:30,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713914181] [2023-12-19 04:06:30,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713914181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:30,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:30,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:30,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379324148] [2023-12-19 04:06:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:30,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:30,444 INFO L87 Difference]: Start difference. First operand 297142 states and 306228 transitions. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 04:06:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:35,138 INFO L93 Difference]: Finished difference Result 607631 states and 627052 transitions. [2023-12-19 04:06:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 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 997 [2023-12-19 04:06:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:35,620 INFO L225 Difference]: With dead ends: 607631 [2023-12-19 04:06:35,620 INFO L226 Difference]: Without dead ends: 327810 [2023-12-19 04:06:36,043 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 04:06:36,044 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 891 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 906 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:36,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 495 Invalid, 3150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [906 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:06:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327810 states. [2023-12-19 04:06:39,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327810 to 319936. [2023-12-19 04:06:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319936 states, 319935 states have (on average 1.0299967180833607) internal successors, (329532), 319935 states have internal predecessors, (329532), 0 states have call successors, (0), 0 states 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 04:06:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319936 states to 319936 states and 329532 transitions. [2023-12-19 04:06:41,097 INFO L78 Accepts]: Start accepts. Automaton has 319936 states and 329532 transitions. Word has length 997 [2023-12-19 04:06:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:41,098 INFO L495 AbstractCegarLoop]: Abstraction has 319936 states and 329532 transitions. [2023-12-19 04:06:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 04:06:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 319936 states and 329532 transitions. [2023-12-19 04:06:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1371 [2023-12-19 04:06:41,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:41,344 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 04:06:41,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:06:41,345 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:41,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -814265977, now seen corresponding path program 1 times [2023-12-19 04:06:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:41,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562809407] [2023-12-19 04:06:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms